CN115096535A - Water drop dynamics effect measuring method and system - Google Patents
Water drop dynamics effect measuring method and system Download PDFInfo
- Publication number
- CN115096535A CN115096535A CN202210797068.1A CN202210797068A CN115096535A CN 115096535 A CN115096535 A CN 115096535A CN 202210797068 A CN202210797068 A CN 202210797068A CN 115096535 A CN115096535 A CN 115096535A
- Authority
- CN
- China
- Prior art keywords
- water
- research model
- water drop
- model
- speed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 358
- 238000000034 method Methods 0.000 title claims abstract description 80
- 230000000694 effects Effects 0.000 title claims abstract description 65
- 238000011160 research Methods 0.000 claims abstract description 169
- 238000012806 monitoring device Methods 0.000 claims abstract description 47
- 230000003116 impacting effect Effects 0.000 claims abstract description 27
- 238000005259 measurement Methods 0.000 claims description 15
- 238000012544 monitoring process Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 7
- 238000004088 simulation Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The embodiment of the application discloses a water drop dynamics effect measuring method and system, and relates to the field of water drop dynamics. The method is applied to a water drop dynamic effect measuring system, the system comprises a water drop generator, a rotating device and a water drop monitoring device, and the method comprises the following steps: enabling the rotary apparatus to drive a research model to rotate at a preset rotation speed, wherein the research model is detachably mounted on the rotary apparatus; causing the water drop generator to release water drops in a preset release direction and at a preset release speed so that the water drops impinge on the research model; and enabling the water drop monitoring device to monitor the state of the water drops in the process of impacting the research model. By the method, the problems that in the prior art, the cost is very high, the occupied space is very large, the provided water drop speed cannot reach the speed required to be simulated and the like can be effectively solved.
Description
Technical Field
The application relates to the field of water drop dynamics, in particular to a water drop dynamics effect measuring method and system.
Background
When the plane passes through the cloud layer, supercooled water drops impact the plane body and may generate phase change to cause icing. Icing can change the appearance and the streaming flow field of the airplane, destroy the pneumatic performance, reduce the maneuverability and the stability, threaten the flight safety and cause air crash accidents in severe cases. In the study of the icing of the airplane, the process of water drops impacting the surface of the airplane is studied, and the collection amount, the icing amount and the icing shape of the water drops on the surface of the airplane are directly related, so that the study is very important.
During the movement of the water drops, the water drops may have the effects of deformation, crushing, merging, splitting after merging and the like, and the water drops may collide with an object surface, attach to the object surface or have the splashing effect. At present, in the prior art, when a process that water drops impact an object surface is researched, a mechanism wind tunnel form is generally adopted, specifically, a system comprising a water drop generator, a vertical wind tunnel, a measuring device and a research model is adopted, so that the water drop generator releases water drops, the water drops pass through the vertical air channel, high-speed airflow is simulated in the vertical air channel so as to accelerate the water drops, and the form of the water drops impacting the research model at high speed is obtained through the measuring device. However, in the process of implementing the invention, the inventor finds that at least the following problems exist in the prior art: the prior art needs to set the vertical air passage to be very long and apply very large power to the vertical air passage, has very high cost and very large occupied space, and compared with the speed needing to be simulated, such as the impact speed when an airplane flies, the prior art actually provides the water drop speed under the condition that the speed needing to be simulated cannot be achieved.
Therefore, the prior art has the problems of very high cost, very large occupied space, incapability of providing the water drop speed to the speed required to be simulated, and the like.
Disclosure of Invention
In the prior art, the speed of water drops reaches the speed to be simulated through the air flow in the air passage, when the research model is a wing, the speed to be simulated is the speed of an airplane during flying, and when the research model is a fan blade of a wind driven generator, the speed to be simulated is the speed of the fan blade during rotation of the wind driven generator. If the water droplets are accelerated by simulating a high-speed air flow in the vertical air passage in the prior art manner, it is necessary to set the vertical air passage very long and to apply very large power to the vertical air passage. The inventor of the application finds through long-term practice that by taking the research model as an example of a wing, the situation that water drops impact the surface of an airplane in the flying process of the airplane can be simulated by enabling the relative speed between the water drops and the research model to reach the speed to be simulated, namely: the research model reaches the speed required to be simulated, and water drops impact the research model, so that the process that the water drops impact wings when the airplane flies is researched.
Based on the above, the application provides a water droplet dynamic effect measuring method, in which a rotary apparatus drives a research model to rotate at a preset rotation speed, wherein the research model is detachably mounted on the rotary apparatus, so that the research model can reach a speed to be simulated through rotation; enabling the water drop generator to release water drops in a preset release direction and a preset release speed so that the water drops impact on the research model, and simulating the process that the water drops actually impact on the research model; and enabling the water drop monitoring device to monitor the state of the water drops in the process of impacting the research model, so as to research the dynamic effect in the process of impacting the research model by the water drops. Therefore, the problems that the cost is very high, the occupied space is very large, the provided water drop speed cannot reach the speed required to be simulated and the like in the prior art can be effectively solved.
In a first aspect, a method for measuring a water droplet dynamics effect is provided, the method comprising: s110, enabling the rotary instrument to drive a research model to rotate at a preset rotation speed, wherein the research model is detachably mounted on the rotary instrument; s120, enabling the water drop generator to release water drops in a preset release direction and at a preset release speed so as to enable the water drops to impact the research model; s130, enabling the water drop monitoring device to monitor the state of water drops in the process of impacting the research model.
In a second aspect, there is also provided a water droplet dynamics effect measurement system for performing the above method, comprising: a water drop generator, a rotating apparatus and a water drop monitoring device; the rotary instrument is used for detachably mounting a research model and driving the research model to rotate at a preset rotating speed; when the water drop dynamic effect measuring system is used in combination with the research model, the water drop generator is arranged above any position of a rotating path of the research model, and the water drop generator is used for releasing water drops in a preset releasing direction and at a preset releasing speed so as to enable the water drops to impact on the research model; when the water drop dynamic effect measuring system is used in combination with the research model, the water drop monitoring device is arranged in front of the motion trail of the water drops and used for monitoring the state of the water drops in the process of impacting the research model.
In summary, the present application has at least the following technical effects:
1. according to the water drop dynamic effect measuring method, the rotary instrument drives the research model to rotate at the preset rotating speed, so that the research model can reach the speed required to be simulated through rotation, the water drop generator releases water drops to impact the research model, and the simulated water drops impact the research model in practice. The rotary apparatus with low cost and small occupied space is used for enabling the research model to reach the speed required to be simulated, so that the cost and the occupied space are saved, the relative speed of the research model and the water drop can reach the speed required to be simulated by the rotary apparatus, and the problem that the water drop speed cannot reach the speed required to be simulated in the prior art is solved.
2. According to the water drop dynamic effect measuring method, the water drop monitoring device monitors the state of the water drop impacting the research model, so that the dynamic effects of deformation, crushing, combination, splitting and the like in the water drop movement process and the dynamic effects of adhesion or splashing and the like when the water drop impacts the surface of the research model can be researched.
3. According to the water drop dynamic effect measuring method, the water drop generator releases water drops to impact the front edge of the research model, the front edge of the research model is easier to freeze, and a better basis is provided for researching the object surface freezing through the water drop impact process.
4. According to the water drop dynamic effect measuring system, the rotary machine which can be detachably provided with the research model is arranged, so that the research model can reach the speed required to be simulated, the cost is low, and the occupied space is small; when the system is used, a research model is installed on a rotary instrument, the water drop generator is arranged above any position of a rotary path of the research model, so that water drops can impact on the research model, the process that the water drops actually impact on the research model is simulated, and the water drop monitoring device is arranged in front of the motion trail of the water drops, so that the water drop monitoring device can monitor the state of the water drops impacting on the research model in the process.
Therefore, the scheme provided by the application can effectively solve the problems that the cost is very high, the occupied space is very large, the provided water drop speed cannot reach the speed required to be simulated and the like in the prior art.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic flow chart illustrating a method for measuring a water droplet kinetic effect provided in example 1 of the present application;
fig. 2 is a schematic view showing a state before water droplets provided in example 1 of the present application collide with a study model;
FIG. 3 is a schematic view showing a state where a water droplet provided in example 1 of the present application collides with a study model;
fig. 4 is a schematic diagram illustrating a water droplet dynamic effect measuring system provided in example 2 of the present application;
FIG. 5 shows a schematic diagram of the rotational path of the study model provided in example 2 of the present application;
fig. 6 is a schematic view showing that an outlet provided in example 2 of the present application is provided on the side of a water droplet generator;
FIG. 7 is a schematic diagram showing the water drop provided in example 2 of the present application impinging on the middle of the study model;
fig. 8 is a schematic view showing a water droplet monitoring device provided in example 2 of the present application, which is disposed above a water droplet collision point;
fig. 9 is a schematic view of another water droplet dynamics effect measurement system 100 provided in example 3 of the present application;
fig. 10 is a side view of a water droplet kinetic effect measuring system provided in example 3 of the present application;
fig. 11 shows a schematic diagram of a system for measuring a dynamic effect of water droplets provided in example 4 of the present application.
Detailed Description
In order to make the technical solutions of the present application better understood, 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 a part of the embodiments of the present application, and not all of the 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 application.
The research on the movement process of water drops and the process of the water drops impacting the surface of the research model are directly related to the collection amount of the water drops, the icing amount and the icing shape on the surface of the research model, so that the research is very important. The water drops may deform, break, merge, split after merging, and the like during the movement, and the water drops may attach to the object surface or generate a splashing effect after impacting the object surface.
At present, in the prior art, when a process that water drops impact an object surface is researched, a mechanism wind tunnel form is generally adopted, specifically, a system comprising a water drop generator, a vertical wind tunnel, a measuring device and a research model is adopted, so that the water drop generator releases water drops, the water drops pass through the vertical air channel, high-speed airflow is simulated in the vertical air channel so as to accelerate the water drops, and the form of the water drops impacting the research model at high speed is obtained through the measuring device. However, in the prior art, the speed of the water drops reaches the speed to be simulated through the air flow in the air passage, when the research model is a wing, the speed to be simulated is the impact speed of the airplane during flying, and when the research model is a fan blade of a wind driven generator, the speed to be simulated is the linear speed of the fan blade during rotation of the wind driven generator. If the water droplets are accelerated by simulating high-speed airflow in the vertical air passage in the manner of the prior art, the vertical air passage needs to be set to be very long, and great power is applied to the vertical air passage, so that the cost is very high, the occupied space is very large, and compared with the speed needing simulation, such as the impact speed when an airplane flies, the speed of the water droplets actually provided by the prior art cannot reach the speed needing simulation.
Therefore, in order to solve the above-mentioned drawbacks, an embodiment of the present invention provides a method for measuring a dynamic effect of water droplets, in which a research model is driven by a rotating apparatus to rotate at a preset rotation speed, wherein the research model is detachably mounted on the rotating apparatus, so that the research model can rotate to reach a speed to be simulated; enabling the water drop generator to release water drops in a preset release direction and at a preset release speed so that the water drops impact on the research model, and simulating the process that the water drops impact on the research model in practice; and enabling the water drop monitoring device to monitor the state of the water drops in the process of impacting the research model, so as to research the dynamic effect of the water drops impacting the research model.
The following describes a water droplet kinetic effect measuring method and a water droplet kinetic effect measuring system according to the present application. It should be noted that: the reference numbers to the method steps of the present application are not intended to limit the order thereof, but rather to distinguish the different steps.
Example 1
Referring to fig. 1, fig. 1 is a schematic flow chart of a water droplet dynamics effect measurement method provided in embodiment 1 of the present application. In this embodiment, the method for measuring the dynamic effect of the water droplet is applied to a system for measuring the dynamic effect of the water droplet, the system includes a water droplet generator, a rotating device, and a water droplet monitoring device, and the method may include the following steps:
step S110: and driving a research model to rotate at a preset rotation speed by the rotating apparatus, wherein the research model is detachably mounted on the rotating apparatus.
As an alternative embodiment, the rotation instrument may comprise a rotation shaft. The research model can be arranged on a rotating shaft of the rotating apparatus, and the rotating shaft drives the research model to rotate.
As another alternative, the study model may be mounted on a rotary table of the rotary apparatus, and the rotary table may move the study model in a circular path, an elliptical path, or other paths in a plane so as to rotate. The plane of the moving path of the rotating platform may be the ground, or a plane perpendicular to the ground, which is not limited in this application.
In the embodiment of the application, the research model is detachably arranged on the rotary instrument, so that the position of the research model arranged on the rotary instrument can be adjusted, and different research models can be replaced according to test requirements.
In the embodiment of the present application, the research model may be a wing or an empennage, and the method provided in the embodiment of the present application may be applied to the field where water drops strike an aircraft, and the research model may also be a fan blade of a wind turbine generator.
In the embodiment of the present application, the preset rotation speed may refer to an angular velocity of the research model, and may also refer to a linear velocity of the research model. The preset rotation speed may be set by the user, or may be a default speed of the rotating apparatus before the user sets the preset rotation speed, or may be a required speed set by the controller after the speed required by the research model is calculated to complete the test if the water droplet dynamics effect measurement system further includes the controller.
The preset rotation speed may be a speed that needs to be simulated.
Specifically, when the research model is a wing, the speed to be simulated is the speed of the airplane during flying, for example, taking a preset rotation speed as the linear speed of the research model, and in order to simulate the water drop impact process during flying of the airplane, the preset rotation speed may be 150m/s (meters per second).
When the research model is the fan blade of the wind driven generator, the speed to be simulated is the speed of the fan blade when the wind driven generator rotates.
The water droplet dynamics effect measuring method that this application embodiment provided makes research model reach the speed that needs the simulation through using rotary apparatus to for the water droplet provides the relative velocity that needs the simulation with research model, compare prior art and use the air flue to accelerate for the water droplet, more practice thrift the cost, occupation space is littleer. And the rotating device can enable the relative speed of the research model and the water drop to reach the speed required to be simulated, and the problem that the water drop speed provided by the prior art cannot reach the speed required to be simulated is solved.
Step S120: and enabling the water drop generator to release water drops in a preset release direction and at a preset release speed so as to enable the water drops to impact on the research model.
In the embodiment of the present application, the water drop generator may refer to a device for generating water drops in a wind tunnel test, and may also be other devices, such as a funnel with an outlet only having a size of water drops.
In the embodiment of the application, the water drop generator can release a single water drop, can continuously release a plurality of water drops with the same diameter, and can also continuously release a plurality of water drops with different diameters. The number, diameter, and time interval of release of each water droplet by the water droplet generator may be set in advance. The water droplet generator may also provide a preset release speed for the released water droplets by spraying the water droplets. The preset releasing direction of the water drops during releasing can be controlled by adjusting the water drop generator.
Specifically, the preset releasing direction may be vertical downward, may also be a horizontal direction, may also be a direction that is inclined downward, and the preset releasing direction may also be other directions, which is not limited in this application.
In the embodiment of the present application, the preset release speed may be 0 or not.
If the preset release rate is 0, the preset release rate can simulate the condition that the air is static, namely: in practice, no air flow accelerates water droplets.
If the preset release rate is not 0, for example, the drop generator sprays the released drops, the preset release rate can simulate the situation where the air is dynamic, that is: in practice, the flowing air causes the water droplets to have a certain velocity.
By setting different preset release speeds, a foundation is provided for researching the dynamic effects of deformation, crushing, merging, splitting after merging and the like in the water drop movement process.
In an exemplary embodiment, the step S120 may further include a substep S121.
Substep S121: the water drop generator releases water drops in a preset release direction and at a preset release speed so that the water drops impinge on the leading edge of the research model.
In the embodiment of the application, the water drop generator can adjust the preset release direction or adjust the preset release speed so as to adjust the position of the water drop impacting the research model. For example, if the water drop generator releases water drops in a horizontal direction, the water drop generator may adjust a preset release speed of the water drops, so as to adjust a movement locus of the water drops, specifically, the larger the preset release speed is, the farther the distance the water drops move horizontally is, the smaller the preset release speed is, the closer the distance the water drops move horizontally is, so as to adjust the position where the water drops impact on the research model.
In the embodiment of the present application, it is also possible to move the position of the water droplet generator, or to move the position of the rotary instrument, or to adjust the position at which the study model is mounted on the rotary instrument, thereby adjusting the position at which the water droplets impinge on the study model.
The water drop is impacted on the front edge of the research model by adjusting the position of the water drop impacting on the research model.
In the embodiment of the application, the front edge of the research model is most easily frozen, so that the water drop generator releases water drops to impact on the front edge of the research model, and a better basis is provided for researching the object surface freezing through the water drop impact process.
Step S130: causing the water droplet monitoring device to monitor the state of the water droplets during impact with the study model.
In the embodiment of the present application, the water drop monitoring device may be a high-speed camera, or a video recorder, or other devices capable of recording the impact state of water drops.
In the embodiment of the present application, the states during which the water droplets hit the research model include: the state of the water droplet when it hits the study model, and/or the state of the water droplet during its movement when it does not hit the study model.
Specifically, when the water drop does not impact the research model, the state of the water drop during the movement may be: the state of the water droplets before they hit the study model may also be: the state of the water drop which cannot impact the research model during the movement is shown in fig. 2, and fig. 2 is a schematic diagram of the state of the water drop before impacting the research model. Fig. 2 shows several states of the water drop before it hits the research model, such as intact state, deformed state, and broken state.
In an exemplary embodiment, the step S130 may further include a sub-step S131.
Substep S131: causing the water droplet monitoring device to monitor a state of a water droplet impinging on the study model.
As shown in fig. 3, fig. 3 is a schematic view of a state when water droplets hit the study model. Fig. 3 shows one of the states of water drops impacting the research model, wherein part of the water drops are attached to the surface of the research model, and part of the water drops have a splashing effect.
Therefore, according to the water droplet dynamic effect measuring method provided by the embodiment of the application, on one hand, the rotating apparatus drives the research model to rotate at the preset rotating speed, so that the research model reaches the speed to be simulated, the water droplet generator releases water droplets to impact on the research model, and the simulated water droplets actually impact on the research model. The rotating apparatus with low cost and small occupied space is used to enable the research model to reach the speed to be simulated, so that the cost and the occupied space are saved, the relative speed of the research model and the water drop can reach the speed to be simulated, and the problem that the speed of the water drop provided by the prior art cannot reach the speed to be simulated is solved.
Example 2
The embodiment 2 of the present application provides a water droplet dynamics effect measuring system, which is used for executing the method in the embodiment 1. Referring to fig. 4, fig. 4 is a schematic view of a water droplet dynamic effect measurement system 100 provided in embodiment 2 of the present application. The water droplet dynamics effect measurement system 100 includes: a rotating apparatus 110, a water droplet generator 120, a water droplet monitoring device 130.
The rotating apparatus 110 is used for detachably mounting the research model 140 and for driving the research model 140 to rotate at a preset rotating speed.
As an alternative embodiment, the rotation apparatus 110 may include a rotation table 112, the study model 140 is mounted on the rotation table 112, and the rotation table 112 moves the study model in a circular path, an elliptical path, or other paths in a plane so as to rotate. The plane of the moving path of the rotating platform 112 may be the ground, or a plane perpendicular to the ground, which is not limited in this application.
As an alternative embodiment, the rotating apparatus 110 may include a rotating shaft 111 and a rotating table 112, and the research model 140 may be mounted on the rotating shaft 111 of the rotating apparatus 110, and the rotating table 112 provides power to make the rotating shaft 111 rotate the research model 140.
In the embodiment of the present application, the research model 140 is detachably mounted on the rotating apparatus 110, so that the position of the research model 140 mounted on the rotating apparatus 110 can be adjusted, and different research models 140 can be replaced according to the experiment requirement.
In the embodiment of the present application, the research model 140 may be a wing or an empennage, so that the system 100 provided in the embodiment of the present application may be applied to the field where water drops strike an airplane, and the research model 140 may also be a fan blade of a wind turbine, so that the system 100 provided in the embodiment of the present application may also be applied to the field where water drops strike a wind turbine, and besides, the research model 140 may also be another model, and the system 100 provided in the embodiment of the present application may also be applied to another field where water drops strike.
In the embodiment of the present application, the content of the preset rotation speed may refer to the content of the preset rotation speed in embodiment 1, and details of the present application are not described herein again.
In an exemplary embodiment, the rotation axis 111 of the rotation apparatus 110 is disposed in a vertical direction, and the rotation apparatus 110 is configured to horizontally mount the research model 140 and to rotate the research model 140 in a horizontal direction around the rotation axis 111.
Therefore, the process that water drops impact the wings from the upper part or the oblique upper part of the wings in the actual airplane flying process or the process that the water drops impact the fan blades from the direction vertical to or oblique to the plane of the fan blades in the rotating process of the fan blades of the wind driven generator can be simulated.
When the system 100 for measuring the dynamic effect of water drops is used in conjunction with the research model 140, the water drop generator 120 is disposed above any position of the rotation path of the research model 140, and the water drop generator 120 is configured to release water drops in a preset release direction and at a preset release speed so that the water drops impinge on the research model 140.
In the embodiment of the present application, the water drop generator 120 may refer to a device for generating water drops in a wind tunnel test, and may also be other devices, such as a funnel with an outlet only having a size of water drops.
In an exemplary embodiment, the water droplet generator 120 is movably disposed above the rotational path of the study model 140 when the water droplet dynamics effect measurement system 100 is used in conjunction with the study model 140.
In the embodiment of the present application, the function of the water drop generator 120 can refer to the function of the water drop generator in embodiment 1, and the details are not repeated herein.
The water droplet generator 120 may include an outlet 121 and a generator body 122. The generator body 122 may control the number, diameter, time interval of release of each water droplet, and preset release speed, and the position of the outlet 121 may adjust the preset release direction of the water droplets.
In this embodiment of the application, the content of the preset release direction and the preset release speed may refer to the content of the preset release direction and the preset release speed in embodiment 1, and this application is not described herein again.
In the embodiment of the present application, as shown in fig. 5, fig. 5 is a schematic diagram of a rotation path of the research model 140, and in fig. 5, the rotation path of the research model 140 may be a portion enclosed by a dashed line.
Specifically, when the water droplet kinetic effect measurement system 100 is used in conjunction with the research model 140, if necessary, the impact point is the point a in fig. 5, namely: the water drop generator 120 is disposed above an arbitrary position of the circular line formed during the rotation of point a by causing the water drop to impinge on the leading edge of the study model 140. If it is necessary to make the point of impact an arbitrary point on the study model 140, the water drop generator 120 is disposed above an arbitrary position of the circle line formed during the rotation of the point, that is, the water drop generator 120 is disposed above an arbitrary position of the entire circle region outlined by the dotted line in fig. 5.
In an exemplary embodiment, the outlet 121 of the water droplet generator 120 is disposed above or below the water droplet generator 120.
In this exemplary embodiment, the preset release direction may be a vertical direction.
Above any position of the rotational path of the study model 140, it may be: the rotational path of the study model 140 is directly above an arbitrary position.
And this embodiment may: by moving the position of the water droplet generator 120, or moving the position of the rotary instrument 110, or adjusting the position at which the study model 140 is mounted on the rotary instrument 110, thereby adjusting the position at which the water droplets impinge on the study model 140, it is ensured that the water droplets impinge on the target impingement point on the study model 140.
Therefore, the process that water drops impact the wings from the position right above the wings in the actual airplane flying process or the process that the water drops impact the fan blades from the direction perpendicular to the plane of the fan blades in the rotating process of the fan blades of the wind driven generator can be simulated.
In addition, in this way, the movement locus of the water drop can be known to be a straight line vertically downward without calculation or monitoring by the water drop monitoring device 130, and the movement locus of the water drop can be obtained more conveniently.
Of course, in this exemplary embodiment, the preset releasing direction may also be an oblique upward direction or an oblique downward direction, and then the upper position of any position of the rotation path of the research model 140 may also be: the rotational path of the model 140 is studied diagonally above and at an arbitrary position.
Therefore, the process that water drops impact the wings from the oblique upper part of the wings in the actual airplane flying process or the process that the water drops impact the fan blades from the direction oblique to the plane of the fan blades in the rotating process of the fan blades of the wind driven generator can be simulated.
In an exemplary embodiment, as shown in fig. 6, fig. 6 is a schematic view in which an outlet is provided at a side of a water drop generator 120, and an outlet 121 of the water drop generator 120 is provided at a side of the water drop generator 120.
In this exemplary embodiment, the preset releasing direction may be a horizontal direction, and may also be an oblique upward or downward direction.
Above any position of the rotation path of the study model 140, it may be: the rotational path of the study model 140 may be, directly above an arbitrary position: the rotational path of the model 140 is studied diagonally above and at an arbitrary position.
In the embodiment of the present application, it is possible to: by moving the position of the water droplet generator 120, or moving the position of the rotary instrument 110, or adjusting the position at which the study model 140 is mounted on the rotary instrument 110, thereby adjusting the position at which the water droplets impinge on the study model 140, it is ensured that the water droplets impinge on the target impingement point on the study model 140.
The method can also comprise the following steps: the preset release rate is adjusted to adjust the location where the water droplets impinge on the study model 140 to ensure that the water droplets impinge on the target impingement point on the study model 140. Specifically, the larger the preset release speed is, the longer the distance the water drop moves horizontally as shown in fig. 7, the smaller the preset release speed is, and the closer the distance the water drop moves horizontally as shown in fig. 6, so that the position where the water drop hits the study model 140 can be adjusted.
Therefore, the process that water drops impact the wings from the oblique upper part of the wings in the actual airplane flying process or the process that the water drops impact the fan blades from the direction oblique to the plane of the fan blades in the rotating process of the fan blades of the wind driven generator can be simulated.
When the droplet dynamics effect measurement system 100 is used in conjunction with the study model 140, the droplet monitoring device 130 is disposed in front of the droplet motion trajectory for monitoring the state of the droplets during their impact on the study model 140.
In the embodiment of the present application, the water drop monitoring device 130 may be a high-speed camera, or a video recorder, or other devices capable of recording the impact state of water drops.
In an exemplary embodiment, when the droplet dynamics effect measurement system 100 is used in conjunction with the research model 140, the droplet monitoring device 130 may be movably disposed in front of the droplet motion trajectory, and the droplet monitoring device 130 may be moved above, just in front of, or below the droplet impact point.
In the embodiment of the present application, the water drop monitoring device 130 is movably disposed in front of the movement locus of the water drop, so that the state of the water drop when the water drop hits the research model 140 and/or the state of the water drop during movement when the water drop does not hit the research model 140 can be monitored by adjusting the position of the water drop monitoring device 130.
Wherein, adjusting the position of the water drop monitoring device 130 may be: the horizontal position of the water drop monitoring device 130 may be adjusted by: the height of the water drop monitoring device 130 is adjusted.
As an alternative embodiment, the water drop monitoring device 130 may also be rotated 360 degrees to monitor the state of the water drops throughout the period from release to impact.
In fig. 4, the water drop monitoring device 130 is disposed right in front of the water drop impact point, so that the water drop monitoring device 130 can more clearly monitor the state of the water drop impacting the research model 140.
As shown in fig. 8, fig. 8 is a schematic diagram of the water drop monitoring device 130 disposed above the water drop impact point, and if the water drop monitoring device 130 is a high-speed camera, the broken line in fig. 8 shows the range of the shooting picture of the water drop monitoring device 130. The arrangement is such that the water drop monitoring device 130 can also monitor the state of the water drop during movement when the water drop does not impact the research model 140.
Therefore, the water droplet dynamic effect measuring system 100 provided in the embodiment of the present application, by providing the rotating machine detachably mounted with the research model 140, can enable the research model 140 to reach the speed to be simulated, so that the relative speed between the research model 140 and the water droplets reaches the speed to be simulated, and the system has the advantages of low cost and small occupied space; in using the system, a research model 140 is installed on the rotary apparatus 110, the water drop generator 120 is arranged above any position of the rotary path of the research model 140, so that water drops can impact on the research model 140 to simulate the process of the water drops impacting on the research model 140 in practice, and the water drop monitoring device 130 is arranged in front of the motion trail of the water drops, so that the water drop monitoring device 130 can monitor the state of the water drops impacting on the research model 140.
Example 3
On the basis of embodiment 2, the present application, embodiment 3, also provides a system for measuring the dynamic effect of water droplets, which is used to perform the method of embodiment 1. Referring to fig. 9, fig. 9 is a schematic view of a system 100 for measuring a dynamic effect of water droplets according to embodiment 3 of the present application.
Example 3 differs from example 2 in that:
the rotating shaft 111 of the rotating apparatus 110 is disposed in a horizontal direction, and the rotating apparatus 110 is used for vertically mounting the research model 140 and driving the research model 140 to rotate around the rotating shaft 111 in a vertical direction.
As shown in fig. 10, fig. 10 is a side view of the water droplet dynamics effect measurement system 100. In fig. 10, a water droplet impinges on the study model 140 from a direction parallel to the plane of the study model 140.
Therefore, the process that water drops impact the wings from the side surfaces of the wings in the actual airplane flying process or the process that the water drops impact the fan blades from the direction parallel to the plane of the fan blades in the rotating process of the fan blades of the wind driven generator can be simulated.
Therefore, the water droplet dynamic effect measuring system 100 provided in the embodiment of the present application, by providing the rotating machine detachably mounted with the research model 140, can enable the research model 140 to reach the speed to be simulated, so that the relative speed between the research model 140 and the water droplets reaches the speed to be simulated, and the system has the advantages of low cost and small occupied space; in using the system, a research model 140 is installed on the rotary apparatus 110, the water drop generator 120 is arranged above any position of the rotary path of the research model 140, so that water drops can impact on the research model 140 to simulate the process of the water drops impacting on the research model 140 in practice, and the water drop monitoring device 130 is arranged in front of the motion trail of the water drops, so that the water drop monitoring device 130 can monitor the state of the water drops impacting on the research model 140.
Example 4
On the basis of the embodiments 2 and 3, the present application, embodiment 4, also provides a system for measuring the dynamic effect of water drop, which is used for implementing the method of embodiment 1. Referring to fig. 11, fig. 11 is a schematic view of a water droplet dynamic effect measuring system 100 provided in embodiment 4 of the present application.
Example 4 differs from examples 2 and 3 in that:
the water droplet dynamics effect measurement system 100 further includes: and a controller 150.
And a controller 150, connected to the rotating apparatus 110 and the water drop generator 120, for controlling the rotating apparatus 110 to drive the research model 140 to rotate at a preset rotation speed, and for controlling the water drop generator 120 to release water drops in a preset release direction and at a preset release speed.
Thus, the precision of the preset rotating speed, the preset releasing direction and the preset releasing speed is higher.
As an alternative embodiment, the controller 150 is further connected to the water drop monitoring device 130 for controlling the water drop monitoring device 130 to monitor the state of the water drops during their impact on the study model 140.
Therefore, the water droplet dynamic effect measuring system provided by the embodiment of the application can enable the research model 140 to reach the speed required to be simulated by arranging the rotating machine detachably provided with the research model 140, so that the relative speed of the research model 140 and the water droplets reaches the speed required to be simulated, the cost is low, and the occupied space is small; in using the system, a research model 140 is installed on the rotary apparatus 110, the water drop generator 120 is arranged above any position of the rotary path of the research model 140, so that water drops can impact on the research model 140 to simulate the process of the water drops impacting on the research model 140 in practice, and the water drop monitoring device 130 is arranged in front of the motion trail of the water drops, so that the water drop monitoring device 130 can monitor the state of the water drops impacting on the research model 140.
Claims (10)
1. A water drop dynamic effect measuring method is applied to a water drop dynamic effect measuring system, the system comprises a water drop generator, a rotating device and a water drop monitoring device, and the method comprises the following steps:
s110, enabling the rotary instrument to drive a research model to rotate at a preset rotation speed, wherein the research model is detachably mounted on the rotary instrument;
s120, enabling the water drop generator to release water drops in a preset release direction and at a preset release speed so as to enable the water drops to impact the research model;
s130, enabling the water drop monitoring device to monitor the state of water drops in the process of impacting the research model.
2. The method for measuring the dynamic effect of water droplets as set forth in claim 1, wherein the step S130 includes:
causing the water droplet monitoring device to monitor a state of a water droplet impinging on the study model.
3. The method for measuring the dynamic effect of water droplets as claimed in claim 1, wherein the step S120 comprises:
the water drop generator releases water drops in a preset release direction and at a preset release speed so that the water drops impinge on the leading edge of the study model.
4. A water droplet dynamics effect measurement system for performing the method of claim 1, the system comprising: a rotating apparatus, a water drop generator, a water drop monitoring device;
the rotary apparatus is used for detachably mounting a research model and driving the research model to rotate at a preset rotation speed;
when the water drop dynamic effect measuring system is used in combination with the research model, the water drop generator is arranged above any position of a rotating path of the research model, and the water drop generator is used for releasing water drops in a preset releasing direction and a preset releasing speed so as to enable the water drops to impact on the research model;
when the water drop dynamic effect measuring system is used in combination with the research model, the water drop monitoring device is arranged in front of the motion trail of the water drops and used for monitoring the state of the water drops in the process of impacting the research model.
5. The system of claim 4, wherein the axis of rotation of the rotating apparatus is arranged in a vertical direction, and the rotating apparatus is configured to horizontally mount the research model and to rotate the research model in a horizontal direction around the axis of rotation.
6. The system of claim 4, wherein the axis of rotation of the rotating apparatus is oriented in a horizontal direction, and the rotating apparatus is configured to vertically mount the study model and to vertically rotate the study model about the axis of rotation.
7. The system of any one of claims 4 to 6, wherein the drop monitoring device is movably disposed in front of the drop trajectory and can be moved above, directly in front of, or below the impact point of the drop when the system is used in conjunction with the research model.
8. The water droplet kinetic effect measurement system of claim 4, wherein the outlet of the water droplet generator is disposed on a side of, above, or below the water droplet generator.
9. The system of claim 4 or 8, wherein the droplet generator is movably disposed above a rotational path of the study model when the droplet kinetic effect measurement system is used in conjunction with the study model.
10. The water droplet kinetic effect measurement system of claim 4, further comprising:
and the controller is respectively connected with the rotating apparatus and the water drop generator, is used for controlling the rotating apparatus to drive the research model to rotate at a preset rotating speed, and is used for controlling the water drop generator to release water drops in a preset release direction at a preset release speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210797068.1A CN115096535B (en) | 2022-07-08 | 2022-07-08 | Water drop dynamic effect measurement method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210797068.1A CN115096535B (en) | 2022-07-08 | 2022-07-08 | Water drop dynamic effect measurement method and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115096535A true CN115096535A (en) | 2022-09-23 |
| CN115096535B CN115096535B (en) | 2023-10-24 |
Family
ID=83297506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210797068.1A Active CN115096535B (en) | 2022-07-08 | 2022-07-08 | Water drop dynamic effect measurement method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115096535B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009025578A1 (en) * | 2007-08-14 | 2009-02-26 | Central Institute Of Aviation Motors (Ciam) | Method for ground testing of aerospace engineering objects exposed to icing and a device for carrying out said method |
| CN103308271A (en) * | 2012-03-13 | 2013-09-18 | 波音公司 | Supercooled large drop icing condition simulation system |
| CN203643124U (en) * | 2013-12-06 | 2014-06-11 | 武汉航空仪表有限责任公司 | Supercooling large water drop simulation device |
| CN107991055A (en) * | 2017-11-20 | 2018-05-04 | 重庆交通大学 | Gobi Integrated environment wind tunnel simulation device |
| CN111707586A (en) * | 2020-06-28 | 2020-09-25 | 中国石油大学(北京) | Vacuum experiment system for liquid drop impacting high-speed rotating wall surface |
-
2022
- 2022-07-08 CN CN202210797068.1A patent/CN115096535B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009025578A1 (en) * | 2007-08-14 | 2009-02-26 | Central Institute Of Aviation Motors (Ciam) | Method for ground testing of aerospace engineering objects exposed to icing and a device for carrying out said method |
| CN103308271A (en) * | 2012-03-13 | 2013-09-18 | 波音公司 | Supercooled large drop icing condition simulation system |
| EP2650665A2 (en) * | 2012-03-13 | 2013-10-16 | The Boeing Company | Supercooled large drop icing condition simulation system |
| CN203643124U (en) * | 2013-12-06 | 2014-06-11 | 武汉航空仪表有限责任公司 | Supercooling large water drop simulation device |
| CN107991055A (en) * | 2017-11-20 | 2018-05-04 | 重庆交通大学 | Gobi Integrated environment wind tunnel simulation device |
| CN111707586A (en) * | 2020-06-28 | 2020-09-25 | 中国石油大学(北京) | Vacuum experiment system for liquid drop impacting high-speed rotating wall surface |
Non-Patent Citations (1)
| Title |
|---|
| 王昭力等: "TVD 格式在水滴流场数值模拟中的应用研究" * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115096535B (en) | 2023-10-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204314045U (en) | A kind of small-sized reverse-flow type icing wind tunnel equipment | |
| JP2694263B2 (en) | Three-dimensional airflow generator, flight control system verification method for aircraft using the device, and flight motion simulator | |
| CN101821500A (en) | Method for de-icing blade of wind turbine, wind turbine and use thereof | |
| CN108263645A (en) | It is arrested for spatial spin target and the ground physical emulation test system of racemization | |
| WO2017216188A1 (en) | Wind generation means and wind test facility comprising the same | |
| US10444099B2 (en) | Systems and methods for testing protective helmets | |
| CN107389296A (en) | A kind of model aircraft for wind-tunnel | |
| US11473822B2 (en) | Method and apparatus for making falling snow | |
| CN105314111A (en) | Large-size high-speed invisible flying saucer | |
| Zheng et al. | Experimental investigation on ice accretion on a rotating aero-engine spinner with hydrophobic coating | |
| CN115096535B (en) | Water drop dynamic effect measurement method and system | |
| CN109903632A (en) | Droplets impact cold wall face freezing process visualized experiment platform under a kind of concurrent condition | |
| JPH0470535A (en) | Aircraft-testing wind tunnel | |
| CN104321527B (en) | Method for controlling the propeller pitch angle of at least one wind turbine blade | |
| Render et al. | Experimental studies into hail impact characteristics | |
| CN115112345A (en) | Starting time determining method and water drop dynamics effect measuring system | |
| US4131250A (en) | Helicopter blade ice protection systems | |
| US20070029442A1 (en) | Method for supporting a propelled flying object during take-off and/or landing | |
| CN208109376U (en) | Field float of mist droplet simulating test device | |
| Vargas et al. | Experimental Observations on the Deformation of Water Droplets Near the Leading Edge of an Airfoil | |
| CN108279108A (en) | Field float of mist droplet simulating test device | |
| JP2009264376A (en) | Characterization of soft body impact | |
| CN108662952B (en) | Testing system for projectile damage motion target plate | |
| CN106556509B (en) | Ice falls off experimental rig, system and method | |
| Nguyen et al. | Experimental determination of the aerodynamic coefficients of spinning bodies |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |