A collision experiment method considering an ellipsoidal particle orientation angle

Abstract

The application belongs to the technical field of gas-solid two-phase flow experiment, and particularly relates to a collision experiment method considering the orientation angle of ellipsoidal particles. The collision experiment method considering the orientation angle of ellipsoidal particles comprises a high-pressure air compressor, a pressure gauge, a control valve, a gas conveying pipe, a nozzle support frame, a nozzle, an orientation angle control system, a test piece, an adjustable angle frame, ellipsoidal particles, a detachable particle positioner, a telescopic fence, a positioning groove, a lifting handle, a fixed-angle arc surface and a positioner plane, and constitutes an ellipsoidal particle-test piece collision experiment system, so that collision experiment research on ellipsoidal particles with different orientation angles and test pieces can be realized. The orientation angle control system comprises the detachable particle positioner, the telescopic fence, the positioning groove, the lifting handle, the fixed-angle arc surface and the positioner plane, so that the orientation angle can be controlled. The application provides a collision experiment method considering the orientation angle of ellipsoidal particles, and has the advantages of controllable variable speed of ellipsoidal particles and controllable adjustment of the orientation angle.

Description

Technical Field

[0001] This invention belongs to the field of gas-solid two-phase flow experimental technology, specifically relating to a collision experiment method that considers the orientation angle of ellipsoidal particles. Background Technology

[0002] In fields such as water conservancy and chemical engineering, fluid machinery typically operates in a multiphase flow environment. Under these conditions, the collision behavior between particles and the wall directly affects key issues such as energy dissipation and wall wear. Therefore, systematically studying particle-wall collision behavior is of great significance.

[0003] Currently, experimental research on particle-wall collision behavior mainly focuses on spherical particles, with relatively little research on ellipsoidal particles. Although some studies have explored the collision behavior of ellipsoidal particles with walls using pure numerical simulations, the simulation results still have significant errors and limited accuracy due to model assumptions and parameter uncertainties, thus providing insufficient guidance for engineering practice. Therefore, it is necessary to conduct systematic experimental research on the collision behavior of ellipsoidal particles with walls.

[0004] Experimental studies on the collision behavior of ellipsoidal particles with walls face two main challenges: first, it is difficult to achieve controlled collisions between ellipsoidal particles and walls under different orientation angles; second, it is difficult to ensure that the force points of the ellipsoidal particles are stably distributed along the horizontal line of the center of mass under the same working conditions, thus affecting the consistency and repeatability of experimental results. Therefore, research on experimental methods for ellipsoidal particle-wall collisions, tailored to practical engineering needs, is of great significance for improving experimental accuracy and extending the service life of machinery.

[0005] A search revealed no reports to date of experimental research on the collision behavior of ellipsoidal particles with walls using an orientation angle control system. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a collision experiment method that considers the orientation angle of ellipsoidal particles. By setting up an orientation angle control system, the orientation angle of the ellipsoidal particles can be precisely controlled, ensuring that the force points of the particles are stably distributed along the horizontal line where the center of mass is located. Simultaneously, a power system is constructed using a high-pressure air compressor, pressure gauge, and control valve to achieve controllable adjustment of the particle velocity. Furthermore, an adjustable angle frame is used to adjust the particle incident angle.

[0007] A collision experiment method considering the orientation angle of ellipsoidal particles, characterized in that: the method includes a high-pressure air compressor, a pressure gauge, a control valve, an air supply pipe, a nozzle support frame, a nozzle, an orientation angle control system, a test specimen, an adjustable angle frame, ellipsoidal particles, a detachable particle locator, a telescopic fence, a positioning groove, a lifting handle, a fixed-angle arc surface, and a locator plane; a pressure gauge is installed on the high-pressure air compressor to monitor the pressure inside the compressor; the outlet end of the high-pressure air compressor is connected to the inlet of the control valve. The system comprises: an end-connected valve for pressure release within the high-pressure air compressor; an outlet valve connected to the inlet valve for transporting gases at different pressures; an outlet valve connected to the nozzle for powering the ellipsoidal particles; a nozzle support frame connected to the nozzle for fixing it; a specimen mounted on an adjustable angle frame for angle adjustment; and an orientation angle control system comprising ellipsoidal particles, a detachable particle locator, a telescopic fence, a positioning groove, a lifting handle, a fixed-angle arc surface, and a locator plane for adjusting the orientation angle of the ellipsoidal particles.

[0008] Furthermore, the telescopic fence is controlled by a lifting handle to adjust the position of the centroid of the ellipsoidal particle; the fixed-angle arc surface and the positioning groove together determine the orientation angle adjustment of the ellipsoidal particle.

[0009] A collision experiment method considering the orientation angle of ellipsoidal particles includes the following steps: Step 1: Install the high-pressure air compressor, pressure gauge, control valve, air supply pipe, nozzle support frame, nozzle, orientation angle control system, test specimen, adjustable angle frame, ellipsoidal particles, detachable particle positioner, telescopic fence, positioning groove, lifting handle, fixed angle arc surface, positioner plane and other related components; Step 2: Adjust the placement angle of the specimen using the adjustable angle frame; adjust the telescopic fence using the lifting handle so that the center of mass of the ellipsoidal particle is located at the center of the nozzle; start the high-pressure air compressor and observe the pressure change on the pressure gauge; after the pressure gauge reaches the experimental pressure, open the control valve, and high-pressure gas is delivered to the nozzle through the gas supply pipe; the high-pressure gas acts on the center of mass of the ellipsoidal particle, pushing the ellipsoidal particle to impact the specimen at a certain speed; close the control valve; continue to adjust the placement angle of the specimen using the adjustable angle frame, and repeat the above steps to achieve the collision experiment of the ellipsoidal particle at the same orientation angle; use the high-pressure air compressor to change the pressure in the nozzle to achieve the collision experiment of the ellipsoidal particle at different speeds; Step 3: Replace the detachable particle locator installed in Step 1 with a detachable particle locator with a fixed-angle arc surface and a positioning groove in a different position to adjust the orientation angle of the ellipsoidal particle; repeat the process of Step 2 to realize the collision experiment of the ellipsoidal particle under different orientation angles, different incident angles and different velocities.

[0010] The beneficial effects of this invention are: The collision experiment method of the present invention, which considers the orientation angle of ellipsoidal particles, can be combined with a high-pressure air compressor, an orientation angle control system, and an adjustable angle frame to realize collision experiments of ellipsoidal particles and walls under different flow rates, orientation angles, and incident angles, providing support for extending the service life of fluid machinery. Attached Figure Description

[0011] Fig. 1 This is a schematic diagram of a collision experiment method that considers the orientation angle of ellipsoidal particles. Fig. 2 This is a schematic diagram of the orientation angle adjustment system; Fig. 3 This is a schematic diagram of a detachable particle locator.

[0012] Among them: 1-High-pressure air compressor, 2-Pressure gauge, 3-Control valve, 4-Air supply pipe, 5-Nozzle support frame, 6-Nozzle, 7-Orientation angle control system, 8-Specimen, 9-Adjustable angle frame, 10-Ellipsoidal particle, 11-Removable particle locator, 12-Telescopic fence, 13-Positioning groove, 14-Lifting handle, 15-Fixed angle arc surface, 16-Positioner plane. Detailed Implementation

[0013] With reference to the accompanying drawings, the specific process and implementation details of this experimental method will now be further described. It should be noted that the embodiments listed in the specification are merely illustrative and do not constitute a limitation on the scope of protection of this invention. For those skilled in the art, various equivalent technical solutions obtained based on the above embodiments without making substantial innovative improvements to this invention should fall within the scope of protection defined by the claims of this patent.

[0014] Reference Figs. 1 to 3A collision experiment method considering the orientation angle of ellipsoidal particles, characterized in that: the collision experiment method considering the orientation angle of ellipsoidal particles includes a high-pressure air compressor 1, a pressure gauge 2, a control valve 3, an air supply pipe 4, a nozzle support frame 5, a nozzle 6, an orientation angle adjustment system 7, a specimen 8, an adjustable angle frame 9, an ellipsoidal particle 10, a detachable particle locator 11, a telescopic fence 12, a positioning groove 13, a lifting handle 14, a fixed-angle arc surface 15, and a locator plane 16; the high-pressure air compressor 1 is equipped with a pressure gauge 2 to monitor the pressure inside the high-pressure air compressor 1; the outlet end of the high-pressure air compressor 1 is connected to the control valve 3. The inlet end is connected to realize the pressure release in the high-pressure air compressor 1; the outlet end of the control valve 3 is connected to the inlet end of the gas supply pipe 4 to realize the delivery of gases at different pressures; the outlet end of the gas supply pipe 4 is connected to the nozzle 6 to provide power for the ellipsoidal particles; the nozzle support frame 5 is connected to the nozzle 6 to realize the fixation of the nozzle 6; the specimen 8 is installed on the adjustable angle frame 9 to realize the angle adjustment of the specimen 8; the orientation angle control system 7 includes an ellipsoidal particle 10, a detachable particle positioner 11, a telescopic fence 12, a positioning groove 13, a lifting handle 14, a fixed angle arc surface 15, and a positioner plane 16 to realize the orientation angle control of the ellipsoidal particles.

[0015] According to claim 1, a collision experiment method considering the orientation angle of ellipsoidal particles is characterized in that: the telescopic fence 12 is controlled by the lifting handle 14 to realize the position adjustment of the centroid of the ellipsoidal particle 10; the fixed-angle arc surface 15 and the positioning groove 13 together determine the orientation angle control of the ellipsoidal particle.

[0016] The collision experiment method considering the orientation angle of ellipsoidal particles according to claim 1 is characterized in that: the method of use is as follows: Step 1: Install the following components: 1. High-pressure air compressor; 2. Pressure gauge; 3. Control valve; 4. Air supply pipe; 5. Nozzle support frame; 6. Nozzle; 7. Orientation angle control system; 8. Test piece; 9. Adjustable angle frame; 10. Ellipsoidal particles; 11. Detachable particle positioner; 12. Telescopic fence; 13. Positioning groove; 14. Lifting handle; 15. Fixed angle arc surface; 16. Positioner plane; and other related components. Step 2: Adjust the placement angle of the specimen 8 using the adjustable angle frame 9; adjust the telescopic fence 12 using the lifting handle 14 so that the center of mass of the ellipsoidal particle 10 is located at the center of the nozzle 6; start the high-pressure air compressor 1 and observe the pressure change of the pressure gauge 2; after the pressure of the pressure gauge 2 reaches the experimental pressure, open the control valve 3, and the high-pressure gas is delivered to the nozzle 6 through the gas supply pipe 4; the high-pressure gas acts on the center of mass of the ellipsoidal particle 10, pushing the ellipsoidal particle 10 to collide with the specimen 8 at a certain speed; close the control valve 3; continue to adjust the placement angle of the specimen 8 using the adjustable angle frame 9, and repeat the above steps to achieve the collision experiment of the ellipsoidal particle at the same orientation angle; use the high-pressure air compressor 1 to change the pressure in the nozzle 6 to achieve the collision experiment of the ellipsoidal particle at different speeds; Step 3: Replace the detachable particle locator 11 installed in Step 1 with a detachable particle locator 11 that has a different fixed angle arc surface 15 and a different position positioning groove 13 to adjust the orientation angle of the ellipsoidal particle; repeat the process of Step 2 to realize the collision experiment of the ellipsoidal particle under different orientation angles, different incident angles and different velocities. The controllable adjustment of the ellipsoidal particle velocity is achieved based on Bernoulli's equation: a stable air source is provided by a high-pressure air compressor, and the system pressure is monitored and regulated by a pressure gauge, thereby achieving precise control of the airflow velocity and thus adjusting the motion velocity of the ellipsoidal particles. Its velocity expression is: In the formula, v 椭球形 The velocity of the ellipsoidal particles; P 压缩机 The pressure gauge displays the pressure. P 椭球形 The pressure at the ellipsoidal particle; p l air density; g It is the acceleration due to gravity; h This is the distance from the high-pressure air compressor to the center of the nozzle.

[0017] The key to ensuring the accuracy of the orientation angle of the ellipsoidal particle 10 lies in the matching of the structural geometry: that is, the angle between the top of the fixed-angle arc surface 15 and the center of the positioning groove 13 and the horizontal plane should be consistent with the set orientation angle. Fig. 2 As shown.

[0018] The specific embodiments of the present invention described above are merely illustrative examples, and their scope of protection is not limited to the embodiments described. For those skilled in the art, any equivalent substitutions or adaptive improvements made based on the technical concept and core design principles of the present invention within the technical framework disclosed in this specification should be included within the scope of protection defined by the claims of the present invention.

Claims

1. A collision experiment method considering the orientation angle of ellipsoidal particles, characterized in that: A collision experiment method considering the orientation angle of ellipsoidal particles includes a high-pressure air compressor (1), a pressure gauge (2), a control valve (3), an air supply pipe (4), a nozzle support frame (5), a nozzle (6), an orientation angle control system (7), a specimen (8), an adjustable angle frame (9), ellipsoidal particles (10), a detachable particle locator (11), a telescopic fence (12), a positioning groove (13), a lifting handle (14), a fixed-angle arc surface (15), and a locator plane (16). The high-pressure air compressor (1) is equipped with a pressure gauge (2) to monitor the pressure inside the compressor. The outlet of the high-pressure air compressor (1) is connected to the inlet of the control valve (3) to achieve high-pressure air... The pressure inside the compressor (1) is released; the outlet end of the control valve (3) is connected to the inlet end of the gas pipeline (4) to realize the delivery of gas at different pressures; the outlet end of the gas pipeline (4) is connected to the nozzle (6) to provide power for the ellipsoidal particles; the nozzle support frame (5) is connected to the nozzle (6) to realize the fixation of the nozzle (6); the specimen (8) is installed on the adjustable angle frame (9) to realize the angle adjustment of the specimen (8); the orientation angle control system (7) includes an ellipsoidal particle (10), a detachable particle locator (11), a telescopic fence (12), a positioning groove (13), a lifting handle (14), a fixed angle arc surface (15), and a locator plane (16) to realize the orientation angle control of the ellipsoidal particles.

2. The collision experiment method considering the orientation angle of ellipsoidal particles according to claim 1, characterized in that: The telescopic fence (12) is controlled by the lifting handle (14) to adjust the position of the centroid of the ellipsoidal particle (10); the fixed-angle arc surface (15) and the positioning groove (13) together determine the orientation angle adjustment of the ellipsoidal particle.

3. The collision experiment method considering the orientation angle of ellipsoidal particles according to claim 1, characterized in that: The usage method is as follows: Step 1: Install the high-pressure air compressor (1), pressure gauge (2), control valve (3), air supply pipe (4), nozzle support frame (5), nozzle (6), orientation angle control system (7), test piece (8), adjustable angle frame (9), ellipsoidal particles (10), detachable particle locator (11), telescopic fence (12), positioning groove (13), lifting handle (14), fixed angle arc surface (15), locator plane (16) and other related components; Step 2: Use the adjustable angle frame (9) to adjust the placement angle of the specimen (8); adjust the telescopic fence (12) by lifting handle (14) so ​​that the center of mass of the ellipsoidal particle (10) is located at the center of the nozzle (6); start the high-pressure air compressor (1) and observe the pressure change of the pressure gauge (2); after the pressure gauge (2) reaches the experimental pressure, open the control valve (3) and the high-pressure gas is delivered to the nozzle (6) through the gas supply pipe (4); the high-pressure gas acts on the center of mass of the ellipsoidal particle (10) and pushes the ellipsoidal particle (10) to collide with the specimen (8) at a certain speed; close the control valve (3); continue to use the adjustable angle frame (9) to adjust the placement angle of the specimen (8) and repeat the above steps to realize the collision experiment of the ellipsoidal particle under the same orientation angle; use the high-pressure air compressor (1) to change the pressure in the nozzle (6) to realize the collision experiment of the ellipsoidal particle at different speeds; Step 3: Replace the detachable particle locator (11) installed in Step 1 with a detachable particle locator (11) with a fixed angle arc surface (15) and a different position positioning groove (13) to adjust the orientation angle of the ellipsoidal particle; repeat the process of Step 2 to realize the collision experiment of the ellipsoidal particle under different orientation angles, different incident angles and different velocities.

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