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

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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Problems solved by technology

[0007] The above experimental studies all have the defects of complex experimental equipment, unsatisfactory experimental results, and low experimental safety.

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