Multi-field measurement platform for single bubble collapse and material boundary coupling characteristics

A technology for measuring platforms and cavitation, which is applied in the direction of measuring devices, measuring instrument components, instruments, etc., can solve the problems of low experimental safety, unsatisfactory experimental results, complicated experimental devices, etc., and achieve compact and orderly structure, easy installation, easy-to-handle effects

Inactive Publication Date: 2018-11-27
BEIJING INSTITUTE OF TECHNOLOGYGY
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[0007] The above experimental studies all have the defects of complex experimen

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  • Multi-field measurement platform for single bubble collapse and material boundary coupling characteristics

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Embodiment Construction

[0027] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0028] as attached figure 1 As shown, the present invention provides a multi-field measurement platform for single cavitation collapse and material boundary coupling characteristics. The measurement platform includes a test board 9, an experimental water tank 8, an electric spark generator 13, a transient cavitation shape observation system, Transient cavitation sports field measurement system and structural stress acquisition system;

[0029] The experimental water tank 8 is made up of a box body and a top cover. The butt joint between the box body and the top cover is a flange structure. After the sealing ring 4 is set between the box body and the top cover, it is fixed by bolts 11 to form a closed cavity; There are air pump 1 and vacuum pump 2, and the top cover is provided with air pump 1, vacuum pump 2, pressure gauge 3 and thermometer 12. Air pump 1...

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Abstract

The invention discloses a multi-field measurement platform for single bubble collapse and material boundary coupling characteristics. The multi-field measurement platform comprises a test board, a test water tank, an electric spark generator, a transient bubble morphological observation system, a transient bubble motion field measurement system, and a structural stress acquisition system. The electric spark generator generates single bubbles and mutual coupling between the bubbles and test board is carried out; the transient bubble morphological observation system carries out qualitative and quantitative analyses on the geometrical scale of the bubble morphology by using high-speed video observation and image processing technologies; the transient bubble motion field measurement system uses a tracer particle in a light source illumination flow field and records an image, carries out a cross-correlation analysis on adjacent images in an image sequence to obtain a transient velocity vector field, and carries out processing to obtain velocity field and vorticity field information; and the structural stress acquisition system analyzes a correlation relationship and an action mechanismof a nearby bubble collapse load of the test board and test board wall surface deformation at different initial distances according to the dynamic response process of the wall surface of the test board.

Description

technical field [0001] The invention relates to an experimental measuring device for researching cavitation collapse and boundary coupling, which is used to study the influence of elastic material structural parameters and fluid environmental pressure on the evolution and development of cavitation, and obtain the cavitation shape, Unsteady distribution of velocity field and pressure field. Background technique [0002] In production and life, examples of cavitation in fluids are not uncommon. The phenomenon of cavitation collapse may be used in a beneficial way, such as ultrasonic cleaning in medical treatment; and more in nature, the collapse of cavitation can cause serious disasters, such as the cavitation generated during the operation of the propeller Severe damage to the propeller. In order to reduce the damage of cavitation to underwater structures, scientists have made a lot of efforts. Now it has become a new breakthrough to replace traditional rigid materials with...

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Application Information

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IPC IPC(8): G01D21/02G01D11/00
CPCG01D11/00G01D21/02
Inventor 张敏弟常青马潇健黄彪王国玉
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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