CN116757114B - Low-resistance pneumatic shape design device and method based on steam condensation and solidification and application - Google Patents
Low-resistance pneumatic shape design device and method based on steam condensation and solidification and application Download PDFInfo
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- CN116757114B CN116757114B CN202310705155.4A CN202310705155A CN116757114B CN 116757114 B CN116757114 B CN 116757114B CN 202310705155 A CN202310705155 A CN 202310705155A CN 116757114 B CN116757114 B CN 116757114B
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- 238000013461 design Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000009833 condensation Methods 0.000 title claims abstract description 12
- 230000005494 condensation Effects 0.000 title claims abstract description 12
- 238000007711 solidification Methods 0.000 title abstract description 8
- 230000008023 solidification Effects 0.000 title abstract description 8
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 7
- 238000005507 spraying Methods 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000013005 condensation curing Methods 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 4
- 238000000889 atomisation Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000004088 simulation Methods 0.000 abstract description 3
- 238000005457 optimization Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- RZVHIXYEVGDQDX-UHFFFAOYSA-N 9,10-anthraquinone Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3C(=O)C2=C1 RZVHIXYEVGDQDX-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 238000001723 curing Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
- G06F30/28—Design optimisation, verification or simulation using fluid dynamics, e.g. using Navier-Stokes equations or computational fluid dynamics [CFD]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/18—Network design, e.g. design based on topological or interconnect aspects of utility systems, piping, heating ventilation air conditioning [HVAC] or cabling
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2113/00—Details relating to the application field
- G06F2113/08—Fluids
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2113/00—Details relating to the application field
- G06F2113/14—Pipes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/14—Force analysis or force optimisation, e.g. static or dynamic forces
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Abstract
The invention provides a low-resistance pneumatic appearance design device based on steam condensation and solidification, a method and application thereof, belonging to the technical field of pneumatic design, wherein the method comprises the following steps: building a box-shaped framework; the condensing tube is arranged in the box-shaped framework, and the condensate input and output end of the condensing tube passes through the rear end of the box-shaped framework and is fixed at the lee end of the wind tunnel; spraying to provide supersaturated vapor through an atomizing nozzle, enabling condensate in a condensing pipe to flow, and providing a cold source below zero for the box-shaped framework, wherein at the moment, the saturated vapor in the airflow of the wind tunnel can be separated out, adsorbed and frozen on the wall surface of the box-shaped framework when flowing through the box-shaped framework; the ice layer grows gradually under the continuous action of the air flow, the growth speed of the surface low-pressure area is higher, and finally, the three-dimensional structure with the streamline aerodynamic shape is formed. The invention provides an automatic growth method of an optimized pneumatic shape based on steam condensation and solidification in a flow field, which solves the problems of high difficulty and high cost of the existing numerical simulation design technology.
Description
Technical Field
The invention relates to the technical field of pneumatic design, in particular to a method for generating the shape of a pneumatic component based on steam condensation and solidification.
Background
The low-resistance aerodynamic profile is of great importance for high-end power equipment such as spacecrafts and aircrafts, and has decisive influence on the flying performance and flying quality of the whole aircraft, the flying safety, the flying efficiency, the economy and the like. Meanwhile, the aerodynamic design result of the aircraft is taken as the basis of the design of the machine body structure and the system, and is also the key for influencing the design of the aircraft structure and the flight control system. The basis of pneumatic design relates to an aerodynamic inverse problem, in view of complexity and solving difficulty of the problem, in the prior aircraft design, the pneumatic design is mainly finished by combining a large number of wind tunnel experiments with engineering experience of designers, and a large amount of manpower, material resources and financial resources are required to be input in the method. Although computer simulation technology has been rapidly developed in recent decades, pneumatic optimization design has achieved a series of important achievements, but related research difficulty is high due to the fact that the directions of disciplines are numerous and the directions of the disciplines have respective problems. On the other hand, when the pneumatic analysis calculation is performed on complex shapes or complex flow problems such as shock waves, separation and the like, the calculation amount is huge, the accuracy is difficult to ensure, and great difficulty is also caused to the pneumatic optimization design research. Therefore, the simulation pneumatic optimization design based on the high-reliability numerical value is not yet applied to large-scale practical application at present. Therefore, development of a low-cost high-precision pneumatic shape design method is needed.
Disclosure of Invention
The invention provides an automatic generation method of an optimized aerodynamic shape based on steam condensation and solidification, which solves the problems of high difficulty and high cost of the existing numerical simulation design technology.
In order to achieve the above purpose, the present invention provides the following technical solutions.
A low resistance aerodynamic profile design device based on steam condensation curing placed in a wind tunnel comprising:
a box-like skeleton;
the condensing pipe is arranged in the box-shaped framework, and condensate is arranged in the condensing pipe; the condensate input and output end of the condensing tube passes through the rear end of the box-shaped framework and is fixed at the lee end of the wind tunnel;
the atomizing nozzle is erected in the wind tunnel and is positioned at the front end of the box-shaped framework; the atomizing nozzle is communicated with a supersaturated steam supply pipe;
the atomizing nozzle sprays supersaturated water vapor, condensate in the condensing tube flows, and at the moment, the saturated water vapor in the airflow of the wind tunnel is separated out, adsorbed and frozen on the wall surface of the box-shaped framework when flowing through the box-shaped framework; the ice layer grows gradually under the continuous action of the air flow, the growth speed of the surface low-pressure area is higher, and finally, the three-dimensional structure with the streamline aerodynamic shape is formed.
Preferably, the box-shaped framework is of a closed cuboid structure; the length and width dimensions of the box-shaped framework are determined according to the dimension requirements of the pneumatic appearance.
Preferably, the atomizing nozzle spray provides a supply of supersaturated water vapour, calculated by the formula:
air flow rate unsaturation = water supply.
Preferably, the condensate is a sub-zero cold source.
A low-resistance pneumatic shape design method based on steam condensation and solidification comprises the following steps:
building a box-shaped framework;
the condensing pipe is arranged in the box-shaped framework, and the condensate input and output end of the condensing pipe penetrates through the rear end of the box-shaped framework and is fixed at the lee end of the wind tunnel;
spraying to provide supersaturated vapor through an atomizing nozzle, enabling condensate in a condensing pipe to flow, and providing a cold source below zero for the box-shaped framework, wherein at the moment, the saturated vapor in the airflow of the wind tunnel can be separated out, adsorbed and frozen on the wall surface of the box-shaped framework when flowing through the box-shaped framework;
the ice layer grows gradually under the continuous action of the air flow, the growth speed of the surface low-pressure area is higher, and finally, the three-dimensional structure with the streamline aerodynamic shape is formed.
A low resistance aerodynamic profile structure comprising an aerodynamic profile structure generated by application of the vapor condensation-based curing low resistance aerodynamic profile design method.
The invention has the beneficial effects that:
the invention is based on the principle of condensing and solidifying vapor in a flow field, supersaturated vapor is provided by spraying through an atomizing nozzle, condensate in a condensing pipe flows, and at the moment, the saturated vapor in the airflow of a wind tunnel is separated out, adsorbed and frozen on the wall surface of a box-shaped framework when flowing through the box-shaped framework; the ice layer grows gradually under the continuous action of the air flow, the growth speed of the surface low-pressure area is higher, and finally, the three-dimensional structure with the streamline aerodynamic shape is formed. The method provides a design method for optimizing aerodynamic shape, adopts the principle of ice layer growth, is simple, convenient and efficient, has low cost, and the formed streamline structure naturally meets the hydrodynamic requirement, has a resistance coefficient close to zero, and can be widely applied to aerodynamic shape design of rocket bodies, missile bodies, aircraft bodies, wings, high-speed rails, automobile bodies, underwater parts of ships, underwater submarines and other high-end equipment.
Drawings
FIG. 1 is a schematic illustration of a low resistance aerodynamic profile design device in accordance with an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
The invention relates to a low-resistance pneumatic appearance design device and method based on steam condensation and solidification and application. As shown in fig. 1, the design device comprises a box-like skeleton 6 and a condensation duct 7.
The condensation pipe 7 is arranged inside the box-shaped framework 6; the condensate input and output end of the condensing tube 7 passes through the rear end of the box-shaped framework 6 and is fixed at the lee end of the wind tunnel 2; the atomizing nozzle 3 is erected in the wind tunnel 2 and is positioned at the front end of the box-shaped framework 6; wherein, the atomizing nozzle 3 sprays and provides supersaturated vapor, condensate in the condenser tube 7 flows, provide the cold source below zero degree for the box-shaped framework 6, at this moment, the saturated vapor in the air current 1 of the wind tunnel 2 is precipitated, adsorbed and frozen on the wall surface when flowing through the box-shaped framework 6; the ice layer grows gradually under the continuous action of the air flow 1, the growth speed of the surface low-pressure area is higher, and finally, a streamline aerodynamic three-dimensional structure is formed. Further, the box-shaped framework 6 is of a closed cuboid structure; the length and width dimensions of the box-shaped framework 6 are determined according to the dimensional requirements of the pneumatic appearance. Wherein the supply amount of the supersaturated water vapor supplied by the atomizing nozzle 3 is calculated by the following formula: air flow rate unsaturation = water supply.
The working principle of the device is shown in figure 1. The box-like skeleton 6 to be formed into a pneumatic structure is fixed to the wind tunnel 2 by a condenser tube 7, and an atomizing nozzle 3 is provided in front of the skeleton. When the device works, the air flow 1 is opened, the atomizing nozzle 3 is sprayed to provide supersaturated vapor 4, condensate in the condensing tube 7 flows at the moment, a cold source at zero degrees is provided for the box-shaped framework 6, and the saturated vapor in the air flow can be separated out, adsorbed and frozen on the wall surface of the box-shaped framework 6 when flowing through the box-shaped framework 6. The ice layer grows gradually under the action of the air flow 1, the growth speed of the surface low-pressure area is higher, and finally, the three-dimensional structure 5 which is in full aerodynamic streamline aerodynamic shape can be formed.
The aerodynamic profile generating method is simple, convenient and efficient, and low in cost, and the formed streamline structure naturally meets the hydrodynamic requirements, and the resistance coefficient is close to zero. The pneumatic shape design method can be widely applied to pneumatic shape design of rocket bodies, missile bodies, aircraft bodies, wings, high-speed rails, automobile bodies, underwater parts of ships, underwater submarines and other high-end equipment.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (6)
1. A low resistance aerodynamic profile design device based on steam condensation curing placed in a wind tunnel (2), characterized by comprising:
a box-shaped skeleton (6);
the condensing pipe (7) is arranged inside the box-shaped framework (6), and condensate is arranged in the condensing pipe (7); the condensate input and output end of the condensing tube (7) passes through the rear end of the box-shaped framework (6) and is fixed at the lee end of the wind tunnel (2);
the atomizing nozzle (3) is erected in the wind tunnel (2) and is positioned at the front end of the box-shaped framework (6); the atomizing nozzle (3) is communicated with a supersaturated steam supply pipe;
the atomizing nozzle (3) is used for spraying and providing supersaturated vapor (4), condensate in the condensing pipe (7) flows, and at the moment, the saturated vapor in the airflow (1) of the wind tunnel (2) is separated out, adsorbed and frozen on the wall surface of the box-shaped framework (6) when flowing through the box-shaped framework; the ice layer grows gradually under the continuous action of the air flow (1), and the growth speed of the surface low-pressure area is high, so that a streamline aerodynamic three-dimensional structure (5) is formed.
2. A low resistance aerodynamic profile design device based on vapour condensation curing according to claim 1, characterized in that the box-like skeleton (6) is a closed cuboid structure; the length and width dimensions of the box-shaped framework (6) are determined according to the dimension requirements of the pneumatic appearance.
3. A low resistance pneumatic profile design device based on steam condensation curing according to claim 1, characterized in that the atomizing nozzle (3) spray provides a supply of supersaturated water vapour (4) calculated by the following formula:
air flow rate unsaturation = water supply.
4. The low resistance aerodynamic profile design device based on vapor condensation curing of claim 1, wherein the condensate is a sub-zero cold source.
5. A method of vapor condensation curing based low resistance pneumatic profile design apparatus as in any one of claims 1-4, comprising the steps of:
building a box-shaped framework (6);
the condensing pipe (7) is arranged in the box-shaped framework (6), and the condensate input and output end of the condensing pipe passes through the rear end of the box-shaped framework (6) and is fixed at the lee end of the wind tunnel (2);
the supersaturated vapor is provided by spraying through an atomization nozzle (3), condensate in a condensation pipe (7) flows, a cold source below zero is provided for a box-shaped framework (6), and at the moment, the saturated vapor in the airflow (1) of the wind tunnel (2) can be separated out, adsorbed and frozen on the wall surface of the box-shaped framework (6) when flowing through the box-shaped framework;
the ice layer grows gradually under the continuous action of the air flow (1), and the growth speed of the surface low-pressure area is high, so that a streamline aerodynamic three-dimensional structure (5) is formed.
6. A low resistance aerodynamic profile structure comprising an aerodynamic profile structure produced by a method of applying a vapor condensation curing-based low resistance aerodynamic profile design device of claim 5.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310705155.4A CN116757114B (en) | 2023-06-14 | 2023-06-14 | Low-resistance pneumatic shape design device and method based on steam condensation and solidification and application |
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| CN202310705155.4A CN116757114B (en) | 2023-06-14 | 2023-06-14 | Low-resistance pneumatic shape design device and method based on steam condensation and solidification and application |
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| CN116757114B true CN116757114B (en) | 2024-01-05 |
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