CN115310380A - Simulation method, device, equipment and medium for hose-active control taper sleeve - Google Patents
Simulation method, device, equipment and medium for hose-active control taper sleeve Download PDFInfo
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Abstract
The application discloses a simulation method, a device, equipment and a medium for a hose-active control taper sleeve, which relate to the technical field of simulation and comprise the following steps: calculating a wake flow field of the oiling machine, and acquiring a pneumatic database of the active control taper sleeve under different incoming flow conditions; coupling simulation is carried out on an unsteady URANS flow field solver and a multi-body dynamics solver to determine a pneumatic damping coefficient; performing simulation calculation on the active control taper sleeve based on a multi-body dynamics solver, a preset wake flow field sampling interpolation program, a preset control instruction and a preset control algorithm to obtain a control coupling dynamics response of the active control taper sleeve; and a wake flow field post-processing program is utilized to carry out post-processing on the wake flow field file of the oiling machine to generate a flow field display file, and a multi-body dynamics post-processing program is utilized to carry out post-processing on the motion parameter files of the output taper sleeve rigid body and the hose and the surface grid file of the active control taper sleeve to generate an animation display file. The scheme has high-precision physical modeling and high calculation efficiency.
Description
Technical Field
The invention relates to the technical field of simulation, in particular to a method, a device, equipment and a medium for simulating a hose-active control taper sleeve.
Background
Due to the limitation of the flexible structure of the hose-taper sleeve type oiling device, the butt-joint taper sleeve is easy to deviate from a stable position and perform fluttering oscillation under the action of the tail flow of the oiling machine, the gust side wind and the pneumatic interference force of the head wave close to the oiling machine. Due to the irregular movement of the taper sleeve, the oil receiving machine needs to be controlled and operated with high difficulty in the oil filling and butting process, and the butting and oil filling operation is difficult to be accurately completed at one time, so that the fuel oil supplement efficiency of soft oil filling is reduced, and the swinging taper sleeve can collide with the oil receiving machine to cause safety accidents. The flexible refueling taper sleeve is improved by adopting an active/passive control means, the motion stability and the pose control of the refueling taper sleeve connected with the hose are realized, and the flexible refueling taper sleeve is an advanced flexible refueling concept proposed by the engineering field in recent years. The balance position of the taper sleeve is adjusted and stabilized through a pneumatic control means, and meanwhile, the drifting of the refueling taper sleeve is restrained in the approaching process of the oil receiving machine, so that the oil receiving machine does not need to perform complex tracking operation actions in the approaching and butting process, the working strength of a pilot of the oil receiving machine can be reduced, the butting success rate, the refueling efficiency and the safety of aerial refueling are improved, and the system is generally called as an active control taper sleeve system. In the existing active control taper sleeve system, the active control taper sleeve system based on the pneumatic control surface has the advantages of high control sensitivity, clear control rule, capability of being directly refitted based on the existing soft air refueling taper sleeve and the like, and the universal research of the aeronautical engineering world at home and abroad is obtained.
The existing research modes for the active control taper sleeve mainly comprise wind tunnel test research and numerical simulation research. Due to the limitation of the size of a wind tunnel test section, the oil filling taper sleeve with a control multi-surface and a hose with a corresponding proportion are difficult to be simultaneously placed in a wind tunnel for a scaling test and a full-size test, so that the numerical simulation means of the active control taper sleeve can simulate a soft active control taper sleeve oil filling device with a real appearance and parameters, but the simulation process still has the condition of low precision and calculation efficiency.
In summary, how to realize the simulation calculation of the hose-active control taper sleeve with high precision and high calculation efficiency to meet the engineering design requirement is a problem to be solved at present.
Disclosure of Invention
In view of the above, the present invention provides a simulation method, device, equipment and medium for a hose-active control taper sleeve, which can realize high-precision and high-calculation-efficiency simulation calculation for the hose-active control taper sleeve to meet the engineering design requirements. The specific scheme is as follows:
in a first aspect, the present application discloses a method for simulating a hose-active control taper sleeve, comprising:
calculating a wake flow field of the oiling machine to generate a wake flow field file of the oiling machine, and acquiring a pneumatic database of a reference configuration and a deflection configuration of an active control taper sleeve under different inflow conditions;
coupling simulation is carried out on an unsteady URANS flow field solver and a multi-body dynamics solver, and a pneumatic damping coefficient of the active control taper sleeve is determined by combining the pneumatic database;
taking the pneumatic damping coefficient as an input parameter, and performing simulation calculation on the active control taper sleeve based on the multi-body dynamics solver, a preset wake flow field sampling interpolation program, a preset control instruction and a preset control algorithm to obtain a control coupling dynamics response of the active control taper sleeve;
and performing post-processing on the oiling machine wake flow field file by using a wake flow field post-processing program to obtain a flow field display file meeting a preset readable condition, and generating a hose-active control taper sleeve animation display file by using a multi-body dynamics post-processing program based on a motion parameter file comprising a taper sleeve rigid body and a hose and a predetermined surface grid file of the active control taper sleeve, which are output by the multi-body dynamics solver.
Optionally, the calculating a fuel dispenser wake flow field to generate a fuel dispenser wake flow field file includes:
and performing CFD parallel calculation on the oiling machine wake flow field by using a computational fluid dynamics solver based on a structural grid and an RANS model to generate an oiling machine wake flow field file.
Optionally, the acquiring a pneumatic database of the reference configuration and the rudder configuration of the active control taper sleeve under different incoming flow conditions includes:
and acquiring a six-component aerodynamic force/moment database of the reference configuration and the rudder configuration of the active control taper sleeve under different incoming flow conditions by using CFD (computational fluid dynamics) calculation software or a wind tunnel test method.
Optionally, after acquiring the pneumatic database of the reference configuration and the rudder configuration of the active control taper sleeve under different incoming flow conditions, the method further includes:
and determining the control effect of the control surface of each control surface by utilizing a preset aerodynamic coefficient difference expression and a preset aerodynamic moment coefficient difference expression based on the aerodynamic database.
Optionally, the process of performing simulation calculation on the active control taper sleeve by using the aerodynamic damping coefficient as an input parameter and based on the multi-body dynamics solver, a preset wake flow field sampling interpolation program, a preset control instruction, and a preset control algorithm further includes:
transmitting the centroid position of the active control taper sleeve at the current moment to a preset wake flow field sampling interpolation program through the multi-body dynamics solver, so that the preset wake flow field sampling interpolation program performs spatial sampling interpolation in the wake flow field file of the oiling machine on the basis of the centroid position to obtain an incoming flow velocity vector of the current spatial position, and then returning the incoming flow velocity vector to the multi-body dynamics solver;
and performing interpolation operation on the pneumatic database by utilizing the incoming flow velocity vector through the multi-body dynamics solver to obtain the aerodynamic force/moment of the active control taper sleeve under the condition of rudder deviation, determining a six-component force/moment coefficient of the active control taper sleeve under the condition of rudder deviation by combining a preset control instruction and the control effect of the control surface, and updating the motion parameter of the current time step so as to enter the coupling calculation of the next time step by utilizing the updated motion parameter.
Optionally, the performing coupling simulation on the unsteady URANS flow field solver and the multi-body dynamics solver, and determining the aerodynamic damping coefficient of the active control taper sleeve by combining the aerodynamic database includes:
determining an unsteady URANS flow field solver comprising a dynamic overlapped structure grid, and performing coupling simulation on the unsteady URANS flow field solver and a multi-body dynamics solver to obtain a motion rule of the active control taper sleeve in an unsteady flow field;
and determining the aerodynamic damping coefficient and the aerodynamic moment damping coefficient of the active control taper sleeve based on the motion rule and the aerodynamic database.
Optionally, the method for simulating a hose-active control taper sleeve further includes:
and determining a preset control algorithm for obtaining a rudder deflection rule according to the motion parameters of the active controller and through a control solver, and determining a preset control instruction for controlling the active control taper sleeve according to the rudder deflection rule.
In a second aspect, the present application discloses a hose-active control taper sleeve simulation apparatus, comprising:
the flow field calculation module is used for calculating a oiling machine wake flow field to generate an oiling machine wake flow field file;
the pneumatic database acquisition module is used for acquiring a pneumatic database of the reference configuration and the rudder configuration of the active control taper sleeve under different incoming flow conditions;
the damping coefficient determining module is used for performing coupling simulation on an unsteady URANS flow field solver and a multi-body dynamics solver and determining the pneumatic damping coefficient of the active control taper sleeve by combining the pneumatic database;
the simulation calculation module is used for taking the pneumatic damping coefficient as an input parameter, and performing simulation calculation on the active control taper sleeve based on the multi-body dynamics solver, a preset wake flow field sampling interpolation program, a preset control instruction and a preset control algorithm to obtain a control coupling dynamics response of the active control taper sleeve;
and the display file acquisition module is used for carrying out post-processing on the oiling machine wake flow field file by utilizing a wake flow field post-processing program to obtain a flow field display file meeting a preset readable condition, and generating an animation display file of a hose-active control taper sleeve by utilizing the multi-body dynamics post-processing program based on a motion parameter file which is output by the multi-body dynamics solver and comprises a taper sleeve rigid body and a hose and a predetermined surface mesh file of the active control taper sleeve.
In a third aspect, the present application discloses an electronic device, comprising:
a memory for storing a computer program;
a processor for executing the computer program to implement the steps of the hose-active control drogue simulation method disclosed in the foregoing.
In a fourth aspect, the present application discloses a computer readable storage medium for storing a computer program; wherein the computer program when executed by a processor implements the steps of the hose-active control taper sleeve simulation method disclosed above.
Therefore, the method and the device calculate the oiling machine wake flow field to generate an oiling machine wake flow field file, and acquire a pneumatic database of the reference configuration and the deflection configuration of the active control taper sleeve under different inflow conditions; coupling simulation is carried out on an unsteady URANS flow field solver and a multi-body dynamics solver, and a pneumatic damping coefficient of the active control taper sleeve is determined by combining the pneumatic database; taking the pneumatic damping coefficient as an input parameter, and performing simulation calculation on the active control taper sleeve based on the multi-body dynamics solver, a preset wake flow field sampling interpolation program, a preset control instruction and a preset control algorithm to obtain a control coupling dynamics response of the active control taper sleeve; and performing post-processing on the oiling machine wake flow field file by using a wake flow field post-processing program to obtain a flow field display file meeting a preset readable condition, and generating a hose-active control taper sleeve animation display file by using a multi-body dynamics post-processing program based on a motion parameter file comprising a taper sleeve rigid body and a hose and a predetermined surface grid file of the active control taper sleeve, which are output by the multi-body dynamics solver. Therefore, the method and the device have the advantages that by calculating the tail flow field of the oiling machine, acquiring the pneumatic database of the reference configuration and the deflection configuration of the active control taper sleeve under different inflow conditions, and then combining the fields of unsteady computational fluid mechanics, steady computational fluid mechanics, multi-body dynamics, control theory and the like, the multi-disciplinary coupling simulation is carried out on the active control taper sleeve, so that the control coupling dynamics response of the active control taper sleeve under different inflow conditions is obtained, and the control coupling dynamics response is displayed through corresponding files. The technical scheme can realize the simulation calculation of the hose-active control taper sleeve with high precision and high calculation efficiency, and meet the engineering design requirements.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a flow chart of a hose-active control taper sleeve simulation method disclosed in the present application;
FIG. 2 is a schematic view of an active control drogue multidisciplinary coupling analysis process disclosed herein;
FIG. 3 is a schematic diagram of a data interface between a multi-body dynamics program and control code according to the present disclosure;
FIG. 4 is a schematic diagram of an active control taper sleeve of a cruciform aerodynamic control surface according to the present disclosure;
FIG. 5 is a schematic illustration of taper sleeve control surface numbering according to the present disclosure;
FIG. 6 is a schematic view of a rudder effect curve for actively controlling a taper sleeve rudder moment coefficient disclosed in the present application;
FIG. 7 is a relative rotational angular velocity versus time plot for a No. 1/3 control surface as disclosed herein;
FIG. 8 is a graph of displacement in the X direction of the taper sleeve centroid as a function of time as disclosed herein;
FIG. 9 is a graph of displacement in the Y direction of the taper sleeve centroid as a function of time as disclosed herein;
FIG. 10 is a graph of displacement of a drogue in the Z-direction of the center of mass of the drogue as a function of time as disclosed in the present application;
FIG. 11 is a graph of actively controlling drogue yaw angle over time as disclosed herein;
FIG. 12 is a graph of actively controlled taper sleeve pitch angle over time as disclosed herein;
FIG. 13 is a graph of the velocity of an actively controlled cone sleeve in the x, y, z directions as a function of time as disclosed herein;
FIG. 14 illustrates a process for controlled movement of a hose-active control cone sleeve in the x-y plane as disclosed herein;
FIG. 15 is a schematic diagram of a hose-active control cone simulation apparatus according to the present disclosure;
fig. 16 is a block diagram of an electronic device disclosed in the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The existing research modes for the active control taper sleeve mainly comprise wind tunnel test research and numerical simulation research. Due to the limitation of the size of a wind tunnel test section, the oil filling taper sleeve with multiple control surfaces and a hose with a corresponding proportion are difficult to be simultaneously placed in a wind tunnel for a scaling test and a full-scale test, so that the numerical simulation means of the active control taper sleeve can simulate the soft active control taper sleeve oil filling device with a real appearance and parameters, but the simulation process still has the condition of low precision and calculation efficiency. Therefore, the embodiment of the application discloses a simulation method, a simulation device, simulation equipment and a simulation medium for a hose-active control taper sleeve, which can realize high-precision and high-calculation-efficiency simulation calculation for the hose-active control taper sleeve so as to meet the engineering design requirements.
Referring to fig. 1 and 2, an embodiment of the present application discloses a method for simulating a hose-active control taper sleeve, including:
step S11: and calculating the oil feeder wake flow field to generate an oil feeder wake flow field file, and acquiring a pneumatic database of the reference configuration and the deflection configuration of the active control taper sleeve under different inflow conditions.
In this embodiment, the calculating the oil dispenser wake flow field to generate the oil dispenser wake flow field file includes: and performing CFD (Computational Fluid Dynamics) parallel computation on the oiling machine wake flow field by using a Computational Fluid Dynamics solver based on a structural grid and an RANS model to generate an oiling machine wake flow field file. That is, the computational fluid dynamics solver is specifically constructed based on the structural grid and the RANS model, and the generated fuel dispenser wake flow field file needs to be saved as a para.
In this embodiment, the acquiring a pneumatic database of the reference configuration and the rudder configuration of the active control taper sleeve under different incoming flow conditions includes: and acquiring a six-component aerodynamic force/moment database of the reference configuration and the rudder configuration of the active control taper sleeve under different incoming flow conditions by using CFD (computational fluid dynamics) calculation software or a wind tunnel test method. Further, after acquiring the pneumatic database of the reference configuration and the rudder configuration of the active control taper sleeve under different incoming flow conditions, the method further comprises the following steps: and determining the control effect of the control surface of each control surface by utilizing a preset aerodynamic coefficient difference expression and a preset aerodynamic moment coefficient difference expression based on the aerodynamic database. The preset aerodynamic coefficient difference expression and the preset aerodynamic moment coefficient difference expression are specifically as follows:
wherein the content of the first and second substances,
represents the aerodynamic coefficient of the oiling taper sleeve reference configuration in the jth coordinate axis direction (x, y and z are respectively the 1 st, 2 nd and 3 rd coordinate axis directions),
representing the ith control rudder deflection Δ δ i The aerodynamic coefficient of the j coordinate axis direction after the angle,
the j coordinate axis direction aerodynamic coefficient difference is the deflection unit angle of the ith control rudder;
represents the aerodynamic moment coefficient of the oiling taper sleeve reference configuration in the jth coordinate axis direction,
representing the ith control rudder deflection Δ δ i The aerodynamic moment coefficient of the j coordinate axis direction after the angle,
the j coordinate axis direction aerodynamic moment coefficient difference is the deflection unit angle of the ith control rudder.
Under controlThe linear section of the control surface is provided with a linear section,
and the control surface control effect of the ith control surface is formed.
Step S12: coupling simulation is carried out on an unsteady URANS flow field solver and a multi-body dynamics solver, and the aerodynamic damping coefficient of the active control taper sleeve is determined by combining the aerodynamic database.
In this embodiment, the performing the coupling simulation on the unsteady URANS flow field solver and the multi-body dynamics solver, and determining the aerodynamic damping coefficient of the active control taper sleeve by combining the aerodynamic database includes: determining an unsteady URANS flow field solver comprising a dynamic overlapped structure grid, and performing coupling simulation on the unsteady URANS flow field solver and a multi-body dynamics solver to obtain a motion rule of the active control taper sleeve in an unsteady flow field; and determining the aerodynamic damping coefficient and the aerodynamic moment damping coefficient of the active control taper sleeve based on the motion rule and the aerodynamic database. Namely, the step is the fluid-solid coupling simulation of the aerial refueling hose taper sleeve in the unsteady flow field, the movement rule of the active control taper sleeve in the unsteady flow field can be obtained by performing coupling simulation calculation on the unsteady URANS flow field solver and the multi-body dynamics solver which comprise dynamic overlapped structure grids, and the aerodynamic damping coefficient and the aerodynamic moment damping coefficient of the active control taper sleeve are obtained by combining the obtained aerodynamic database of the active control taper sleeve. The aerodynamic damping coefficients can be used as part of input parameters of subsequent multi-body dynamics calculation and used for constructing an unsteady aerodynamic model of the movement of the taper sleeve in multi-body dynamics simulation so as to improve the calculation accuracy of actively controlling the movement of the taper sleeve.
Step S13: and taking the pneumatic damping coefficient as an input parameter, and carrying out simulation calculation on the active control taper sleeve based on the multi-body dynamics solver, a preset wake flow field sampling interpolation program, a preset control instruction and a preset control algorithm to obtain a control coupling dynamics response of the active control taper sleeve.
In this embodiment, by combining the multi-body dynamics solver with the preset wake flow field sampling interpolation program, the preset control instruction and the preset control algorithm, the pneumatic/motion/control coupling numerical simulation calculation can be performed on the hose-active control taper sleeve device under the given control surface rotation rule, so as to obtain the control coupling dynamics response of the active control taper sleeve. It should be noted that the method further includes: and determining a preset control algorithm for obtaining a rudder deflection rule according to the motion parameters of the active controller and through a control solver, and determining a preset control instruction for controlling the active control taper sleeve according to the rudder deflection rule. That is, the preset control instruction refers to control of the active control taper sleeve according to a preset deviation law, and the preset control algorithm is to obtain the deviation law of the rudder through the control solver according to the motion parameters of the active control taper sleeve, so that the control law of the given pneumatic control surface can be realized, and the motion and dynamic response of the hose-active control taper sleeve under the incoming flow condition can be obtained. For the preset control algorithm, a data interface between the multi-body dynamics program and the control code may be specifically as shown in fig. 3, where fig. 3 is a data interface transmitted from the dynamics program to the control code through a universal data adapter, and may handle the situations that a plurality of control channels and a single control channel correspond to a plurality of control surfaces, and the control code transmits the control feedback quantity to the dynamics program after calculating the control feedback quantity.
In addition, the foregoing process may specifically include: transmitting the centroid position of the active control taper sleeve at the current moment to a preset wake flow field sampling interpolation program through the multi-body dynamics solver, so that the preset wake flow field sampling interpolation program performs spatial sampling interpolation in the oiling machine wake flow field file based on the centroid position to obtain an incoming flow velocity vector of the current spatial position, and then returning the incoming flow velocity vector to the multi-body dynamics solver; and performing interpolation operation on the pneumatic database by utilizing the incoming flow velocity vector through the multi-body dynamics solver to obtain the aerodynamic force/moment of the active control taper sleeve under the condition of rudder deviation, determining a six-component force/moment coefficient of the active control taper sleeve under the condition of rudder deviation by combining a preset control instruction and the control effect of the control surface, and updating the motion parameter of the current time step so as to enter the coupling calculation of the next time step by utilizing the updated motion parameter. It can be understood that the multi-body dynamics solver transmits the current moment of the cone sleeve centroid position vector to the preset wake flow field sampling interpolation program, the latter obtains the incoming flow velocity vector of the space position through the space sampling interpolation of the tail flow field file of the refueling machine and returns the incoming flow velocity vector to the multi-body dynamics solver, and then the velocity vector is used for interpolating in the pneumatic database of the active control cone sleeve, so that the real-time pneumatic force/moment of the active control cone sleeve with the deflection rudder can be obtained. And combining a preset control surface command and a control surface control effect, the multi-body dynamics solver can solve the six-component force/moment coefficient of the taper sleeve after the rudder deflection, update the kinematic parameters of the taper sleeve such as the position, the attitude, the speed and the like of the current time step, and then enter the coupling calculation of the next time step.
Step S14: and performing post-processing on the oiling machine wake flow field file by using a wake flow field post-processing program to obtain a flow field display file meeting a preset readable condition, and generating an animation display file of the hose-active control taper sleeve by using the multi-body dynamics post-processing program based on a motion parameter file which is output by the multi-body dynamics solver and comprises a taper sleeve rigid body and a hose and a predetermined surface mesh file of the active control taper sleeve.
In this embodiment, a wake flow field post-processing program is used to post-process a wake flow field file of the oiling machine to obtain a flow field display file readable by a tecplot software, and a multi-body dynamics post-processing program is used to read in a motion parameter file of a taper sleeve rigid body and a hose output by multi-body dynamics kinematics in each time iteration step and a surface mesh file of an active control taper sleeve, so as to generate an animation display file of the hose-active control taper sleeve.
Therefore, the method and the device calculate the oiling machine wake flow field to generate an oiling machine wake flow field file, and acquire a pneumatic database of the reference configuration and the deflection configuration of the active control taper sleeve under different inflow conditions; coupling simulation is carried out on an unsteady URANS flow field solver and a multi-body dynamics solver, and the aerodynamic damping coefficient of the active control taper sleeve is determined by combining the aerodynamic database; taking the pneumatic damping coefficient as an input parameter, and carrying out simulation calculation on the active control taper sleeve based on the multi-body dynamics solver, a preset wake flow field sampling interpolation program, a preset control instruction and a preset control algorithm to obtain a control coupling dynamics response of the active control taper sleeve; and performing post-processing on the oiling machine wake flow field file by using a wake flow field post-processing program to obtain a flow field display file meeting a preset readable condition, and generating an animation display file of the hose-active control taper sleeve by using the multi-body dynamics post-processing program based on a motion parameter file which is output by the multi-body dynamics solver and comprises a taper sleeve rigid body and a hose and a predetermined surface mesh file of the active control taper sleeve. Therefore, the method and the device have the advantages that by calculating the tail flow field of the oiling machine, acquiring the pneumatic database of the reference configuration and the deflection configuration of the active control taper sleeve under different inflow conditions, and then combining the fields of unsteady computational fluid mechanics, steady computational fluid mechanics, multi-body dynamics, control theory and the like, the multi-disciplinary coupling simulation is carried out on the active control taper sleeve, so that the control coupling dynamics response of the active control taper sleeve under different inflow conditions is obtained, and the control coupling dynamics response is displayed through corresponding files. The technical scheme can realize the simulation calculation of the hose-active control taper sleeve with high precision and high calculation efficiency, and meet the engineering design requirements.
The following takes a specific active control taper sleeve of a cross aerodynamic control surface disclosed in fig. 4 as an example, and specifically describes a hose-active control taper sleeve simulation method in the present application:
the active control taper sleeve in fig. 4 and the oil filling hose connected with the front end of the active control taper sleeve jointly form a hose-taper sleeve active stable oil filling device, 4 groups of control surfaces are arranged at the X-direction coordinate position of the center of mass of the taper sleeve at intervals of 90 degrees around the circumference of the taper sleeve, and the wing profile of the control surfaces is NACA0012 symmetrical wing profile without sweep angle arrangement. The numbering sequence of the control surfaces is shown in fig. 5, when viewed from the back to the front of the taper sleeve, the control surfaces 1 and 3 are arranged in the vertical direction, namely the rotating shaft is the z axis, the-z direction is the positive rotating direction, the control surfaces 2 and 4 are arranged in the transverse direction, namely the rotating shaft is the y axis, and the + y direction is the positive rotating direction. When the No. 1 or No. 3 control surface rotates in the positive direction, the control surface is subjected to aerodynamic force in the + y direction, so that the taper sleeve moves to the right; when the No. 2 or No. 4 control surface rotates in the positive direction, the control surface is subjected to aerodynamic force in the + z direction, so that the taper sleeve moves upwards. The rolling motion of the taper sleeve can be controlled by controlling the differential motion of each control surface. In addition, the geometrical parameters and the quality characteristic parameters of the refueling drogue and the refueling hose are shown in the table I.
| Taper sleeve quality (kg) | 40 |
| Diameter of taper sleeve umbrella cover (m) | 1 |
| Taper sleeve pitching main inertia distance (kg.m) 2 )Jy | 6 |
| Taper sleeve yaw main inertia distance (kg m) 2 )Jz | 6 |
| Hose material density (kg/m) 3 ) | 1.16455*10 3 |
| Tensile modulus of elasticity E (Pa) of hose | 2.0*10 10 |
| Hose cross-sectional area A (m) 2 ) | 2.5761*10 -3 |
| Moment of inertia of hose section I (kg. M) 4 ) | 2.19742*10 -6 |
| Full length of hose (m) | 24 |
| Diameter of flexible pipe (mm) | 92 |
For the active control hose-taper sleeve stabilization system of the cross-shaped pneumatic control surface, six-component pneumatic data under the conditions of an incoming flow attack angle alpha =0 degrees, 5 degrees, 10 degrees, 15 degrees, 20 degrees, 25 degrees, 30 degrees, 35 degrees, 40 degrees, 50 degrees, a sideslip angle beta =0 degrees and 4 degrees are respectively calculated for the reference configuration, the 1-3 control surface synchronous deflection configuration and the 2-4 control surface synchronous deflection configuration. The rudder effect curve of the active control taper sleeve rudder moment coefficient is obtained as shown in 6.
The height of the oiling machine wake field is h =4000m, the incoming flow speed is 99m/s, and the incoming flow attack angle alpha =2 °. In the simulation process, the releasing and stabilizing processes of the active control taper sleeve are calculated firstly, and in the first 40s of calculation, the active control taper sleeve is gradually released at the releasing speed of 1m/s and is stabilized to the convergent configuration position.
Then the taper sleeve controls the control surface to start rotating according to the instruction: control commands are applied to the control surfaces No. 1 and No. 3, the control surfaces and the control surfaces are synchronously rotated according to the angular speed rule shown in the graph 7, the rudder deflection angle of the control surfaces reaches 30 degrees within about 1s, after the control surfaces and the control surfaces are maintained for 0.5s, the control surfaces are rotated according to the opposite angular speed, and the control surfaces are rotated back to the initial rudder deflection angle within 1 s. According to the efficiency and direction of the rudder, the control aim is to make the active control taper sleeve move to the-y direction firstly and then return to the central position.
8-10 show the coordinate of the center of mass of the active control taper sleeve in X, Y and Z directions along with the time variation curve; FIG. 11 shows an active control taper sleeve yaw angle versus time curve; FIG. 12 shows an active control drogue pitch angle versus time curve; fig. 13 shows the velocity-time t curve of the active control cone in x, y, z directions.
As shown in fig. 14, the control initial position of t =43.97s of the active control taper sleeve in the horizontal plane; when t =47.47s, the taper sleeve deflects to the maximum value in the + y direction under the action of aerodynamic force of the control surface; at t =49.57s, the taper sleeve deflects the taper sleeve to a maximum value in the-y direction under the influence of the restoring lateral force. At t =59.97s, the active control cone sleeve stabilizes to a central convergent configuration.
Referring to fig. 15, an embodiment of the present application discloses a simulation apparatus for a hose-active control taper sleeve, which includes:
the flow field calculation module 11 is used for calculating a fuel dispenser wake flow field to generate a fuel dispenser wake flow field file;
the pneumatic database acquisition module 12 is used for acquiring a pneumatic database of the reference configuration and the rudder configuration of the active control taper sleeve under different incoming flow conditions;
the damping coefficient determining module 13 is configured to perform coupling simulation on an unsteady URANS flow field solver and a multi-body dynamics solver, and determine a pneumatic damping coefficient of the active control taper sleeve by combining the pneumatic database;
the simulation calculation module 14 is configured to use the aerodynamic damping coefficient as an input parameter, and perform simulation calculation on the active control taper sleeve based on the multi-body dynamics solver, a preset wake flow field sampling interpolation program, a preset control instruction, and a preset control algorithm to obtain a control coupling dynamics response of the active control taper sleeve;
and the display file acquisition module 15 is configured to perform post-processing on the oiling machine wake flow field file by using a wake flow field post-processing program to obtain a flow field display file meeting a preset readable condition, and generate a hose-active control taper sleeve animation display file by using a multi-body dynamics post-processing program based on a motion parameter file including a taper sleeve rigid body and a hose and a predetermined surface mesh file of the active control taper sleeve, which are output by the multi-body dynamics solver.
Therefore, the method and the device calculate the oiling machine wake flow field to generate an oiling machine wake flow field file, and acquire a pneumatic database of the reference configuration and the deflection configuration of the active control taper sleeve under different inflow conditions; coupling simulation is carried out on an unsteady URANS flow field solver and a multi-body dynamics solver, and a pneumatic damping coefficient of the active control taper sleeve is determined by combining the pneumatic database; taking the pneumatic damping coefficient as an input parameter, and performing simulation calculation on the active control taper sleeve based on the multi-body dynamics solver, a preset wake flow field sampling interpolation program, a preset control instruction and a preset control algorithm to obtain a control coupling dynamics response of the active control taper sleeve; and performing post-processing on the oiling machine wake flow field file by using a wake flow field post-processing program to obtain a flow field display file meeting a preset readable condition, and generating an animation display file of the hose-active control taper sleeve by using the multi-body dynamics post-processing program based on a motion parameter file which is output by the multi-body dynamics solver and comprises a taper sleeve rigid body and a hose and a predetermined surface mesh file of the active control taper sleeve. Therefore, the oiling machine wake flow field is calculated, the pneumatic databases of the reference configuration and the deflection configuration of the active control taper sleeve under different inflow conditions are obtained, and then the multi-disciplinary coupling simulation is carried out on the active control taper sleeve by combining the fields of unsteady computational fluid mechanics, multi-body dynamics, control theory and the like, so that the control coupling dynamics response of the active control taper sleeve under different inflow conditions is obtained and displayed through corresponding files. The technical scheme can realize the simulation calculation of the hose-active control taper sleeve with high precision and high calculation efficiency, and meet the engineering design requirements.
Fig. 16 is a schematic structural diagram of an electronic device according to an embodiment of the present application. The method specifically comprises the following steps: at least one processor 21, at least one memory 22, a power supply 23, a communication interface 24, an input output interface 25, and a communication bus 26. Wherein, the memory 22 is used for storing a computer program, which is loaded and executed by the processor 21 to implement the relevant steps of the hose-active control drogue simulation method executed by an electronic device disclosed in any of the foregoing embodiments.
In this embodiment, the power supply 23 is configured to provide a working voltage for each hardware device on the electronic device 20; the communication interface 24 can create a data transmission channel between the electronic device 20 and an external device, and a communication protocol followed by the communication interface is any communication protocol applicable to the technical solution of the present application, and is not specifically limited herein; the input/output interface 25 is configured to acquire external input data or output data to the outside, and a specific interface type thereof may be selected according to specific application requirements, which is not specifically limited herein.
The processor 21 may include one or more processing cores, such as a 4-core processor, an 8-core processor, and the like. The processor 21 may be implemented in at least one hardware form of a DSP (Digital Signal Processing), an FPGA (Field-Programmable Gate Array), and a PLA (Programmable Logic Array). The processor 21 may also include a main processor and a coprocessor, where the main processor is a processor for Processing data in an awake state, and is also called a Central Processing Unit (CPU); a coprocessor is a low power processor for processing data in a standby state. In some embodiments, the processor 21 may be integrated with a GPU (Graphics Processing Unit), which is responsible for rendering and drawing the content required to be displayed on the display screen. In some embodiments, the processor 21 may further include an AI (Artificial Intelligence) processor for processing a calculation operation related to machine learning.
In addition, the storage 22 is used as a carrier for storing resources, and may be a read-only memory, a random access memory, a magnetic disk or an optical disk, etc., the resources stored thereon include an operating system 221, a computer program 222, data 223, etc., and the storage may be a transient storage or a permanent storage.
The operating system 221 is used for managing and controlling each hardware device on the electronic device 20 and the computer program 222, so as to implement the operation and processing of the mass data 223 in the memory 22 by the processor 21, which may be Windows, unix, linux, or the like. The computer program 222 may further include a computer program that can be used to perform other specific tasks in addition to the computer program that can be used to perform the hose-active control drogue simulation method disclosed in any of the foregoing embodiments and executed by the electronic device 20. The data 223 may include data received by the electronic device and transmitted from an external device, or may include data collected by the input/output interface 25 itself.
Further, an embodiment of the present application further discloses a computer-readable storage medium, in which a computer program is stored, and when the computer program is loaded and executed by a processor, the method steps executed in the simulation process of the hose-active control taper sleeve disclosed in any of the foregoing embodiments are implemented.
The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts among the embodiments are referred to each other. The device disclosed in the embodiment corresponds to the method disclosed in the embodiment, so that the description is simple, and the relevant points can be referred to the description of the method part.
Those of skill would further appreciate that the various illustrative components and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the components and steps of the various examples have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
The present invention provides a method, an apparatus, a device and a storage medium for simulating a hose-active control taper sleeve, wherein a specific example is applied to explain the principle and the implementation of the present invention, and the description of the above embodiment is only used to help understand the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. A simulation method of a hose-active control taper sleeve is characterized by comprising the following steps:
calculating a wake flow field of the oiling machine to generate a wake flow field file of the oiling machine, and acquiring a pneumatic database of a reference configuration and a deflection configuration of an active control taper sleeve under different inflow conditions;
coupling simulation is carried out on an unsteady URANS flow field solver and a multi-body dynamics solver, and a pneumatic damping coefficient of the active control taper sleeve is determined by combining the pneumatic database;
taking the pneumatic damping coefficient as an input parameter, and performing simulation calculation on the active control taper sleeve based on the multi-body dynamics solver, a preset wake flow field sampling interpolation program, a preset control instruction and a preset control algorithm to obtain a control coupling dynamics response of the active control taper sleeve;
and performing post-processing on the oiling machine wake flow field file by using a wake flow field post-processing program to obtain a flow field display file meeting a preset readable condition, and generating an animation display file of the hose-active control taper sleeve by using the multi-body dynamics post-processing program based on a motion parameter file which is output by the multi-body dynamics solver and comprises a taper sleeve rigid body and a hose and a predetermined surface mesh file of the active control taper sleeve.
2. The hose-active control taper sleeve simulation method of claim 1, wherein said calculating a fuel dispenser wake flow field to generate a fuel dispenser wake flow field file comprises:
and performing CFD parallel computation on the oiling machine wake flow field by using a computational fluid mechanics solver based on a structural grid and an RANS model to generate an oiling machine wake flow field file.
3. The method for simulating the hose-active control taper sleeve according to claim 1, wherein the obtaining of the pneumatic database of the reference configuration and the rudder configuration of the active control taper sleeve under different inflow conditions comprises:
and acquiring a six-component aerodynamic force/moment database of the reference configuration and the rudder configuration of the active control taper sleeve under different incoming flow conditions by using CFD (computational fluid dynamics) calculation software or a wind tunnel test method.
4. The method for simulating a hose-active control cone according to claim 1, wherein the step of obtaining the pneumatic database of the reference configuration and the rudder configuration of the active control cone under different inflow conditions further comprises:
and determining the control effect of the control surface of each control surface by utilizing a preset aerodynamic coefficient difference expression and a preset aerodynamic moment coefficient difference expression based on the aerodynamic database.
5. The method for simulating the hose-active control taper sleeve according to claim 4, wherein the step of taking the aerodynamic damping coefficient as an input parameter and performing simulation calculation on the active control taper sleeve based on the multi-body dynamics solver, a preset wake flow field sampling interpolation program, a preset control instruction and a preset control algorithm further comprises:
transmitting the centroid position of the active control taper sleeve at the current moment to a preset wake flow field sampling interpolation program through the multi-body dynamics solver, so that the preset wake flow field sampling interpolation program performs spatial sampling interpolation in the oiling machine wake flow field file based on the centroid position to obtain an incoming flow velocity vector of the current spatial position, and then returning the incoming flow velocity vector to the multi-body dynamics solver;
and performing interpolation operation on the pneumatic database by using the incoming flow velocity vector through the multi-body dynamics solver to obtain aerodynamic force/moment of the active control taper sleeve under the condition of partial rudder, determining a six-component force/moment coefficient of the active control taper sleeve under the condition of partial rudder by combining a preset control instruction and the control surface rudder effect, and updating the motion parameter of the current time step so as to enter the coupling calculation of the next time step by using the updated motion parameter.
6. The method of claim 1, wherein the coupled simulation of an unsteady URANS flow field solver and a multi-body dynamics solver and the combination of the aerodynamic database to determine the aerodynamic damping coefficient of the active control cone comprises:
determining an unsteady URANS flow field solver comprising a dynamic overlapped structure grid, and performing coupling simulation on the unsteady URANS flow field solver and a multi-body dynamics solver to obtain a motion rule of the active control taper sleeve in an unsteady flow field;
and determining the aerodynamic damping coefficient and the aerodynamic moment damping coefficient of the active control taper sleeve based on the motion rule and the aerodynamic database.
7. The method for hose-active control taper sleeve simulation according to any one of claims 1 to 6, further comprising:
and determining a preset control algorithm for obtaining a rudder deflection rule according to the motion parameters of the active controller and through a control resolver, and determining a preset control instruction for controlling the active control taper sleeve according to the rudder deflection rule.
8. A hose-active control taper sleeve simulation apparatus, comprising:
the flow field calculation module is used for calculating the oiling machine wake flow field to generate an oiling machine wake flow field file;
the pneumatic database acquisition module is used for acquiring a pneumatic database of a reference configuration and a deflection configuration of the active control taper sleeve under different incoming flow conditions;
the damping coefficient determining module is used for performing coupling simulation on an unsteady URANS flow field solver and a multi-body dynamics solver and determining the pneumatic damping coefficient of the active control taper sleeve by combining the pneumatic database;
the simulation calculation module is used for taking the pneumatic damping coefficient as an input parameter, and performing simulation calculation on the active control taper sleeve based on the multi-body dynamics solver, a preset wake flow field sampling interpolation program, a preset control instruction and a preset control algorithm to obtain a control coupling dynamics response of the active control taper sleeve;
and the display file acquisition module is used for carrying out post-processing on the oiling machine wake flow field file by utilizing a wake flow field post-processing program to obtain a flow field display file meeting a preset readable condition, and generating an animation display file of a hose-active control taper sleeve by utilizing the multi-body dynamics post-processing program based on a motion parameter file which is output by the multi-body dynamics solver and comprises a taper sleeve rigid body and a hose and a predetermined surface mesh file of the active control taper sleeve.
9. An electronic device, comprising:
a memory for storing a computer program;
a processor for executing the computer program to implement the steps of the hose-active control drogue simulation method of any one of claims 1 to 7.
10. A computer-readable storage medium for storing a computer program; wherein the computer program when executed by a processor implements the steps of the hose-active control drogue simulation method of any one of claims 1 to 7.
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| CN202210943123.3A CN115310380A (en) | 2022-08-08 | 2022-08-08 | Simulation method, device, equipment and medium for hose-active control taper sleeve |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115879387A (en) * | 2022-11-17 | 2023-03-31 | 中国华能集团清洁能源技术研究院有限公司 | Pneumatic driving torque simulation method and system of multiple pneumatic algorithms |
| CN117922831A (en) * | 2024-03-25 | 2024-04-26 | 中国空气动力研究与发展中心计算空气动力研究所 | Active control aerial refueling taper sleeve based on flexible control surface and control method |
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2022
- 2022-08-08 CN CN202210943123.3A patent/CN115310380A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115879387A (en) * | 2022-11-17 | 2023-03-31 | 中国华能集团清洁能源技术研究院有限公司 | Pneumatic driving torque simulation method and system of multiple pneumatic algorithms |
| CN117922831A (en) * | 2024-03-25 | 2024-04-26 | 中国空气动力研究与发展中心计算空气动力研究所 | Active control aerial refueling taper sleeve based on flexible control surface and control method |
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