Gas-solid two-phase shock tube flash X-ray imaging experiment device and method

Abstract

The invention discloses a gas-solid two-phase shock tube flash X-ray imaging experiment device and method. According to the gas-solid two-phase shock tube flash X-ray imaging experiment device, a particle emitting and collecting mechanism is arranged on an observation section, and a flash X-ray imaging system is arranged on the lateral side of the observation section; a particle storage chamber, agate valve and a particle collecting chamber are vertically sequentially arranged, an X-ray emitter emits flash X-rays to the observation section, and the flash X-rays penetrate through aluminum windows on both sides of the observation section and are then received by an X-ray detector; solid particle mediums inside a particle emitting and storage chamber fall off by gravity to form a particle curtain inside the observation section, a shock tube strikes shock waves for interacting with the particle curtain, and then data of the dense particle field at the interacting position of the shock waves and the particle curtain for computing the volume fraction of the particle curtain at different times. The gas-solid two-phase shock tube flash X-ray imaging experiment device achieve transient measurement of the volume fraction of the particle curtain as well as dynamic shock wave structural capturing, and by penetrating the particle curtain in the observation section through the flash X-raysto acquire the volume fractions of the particle curtain as different times, provides a new effective manner for analyzing and observing the specific details during change of the particle curtain.

Description

technical field [0001] The invention relates to a shock tube experimental device, in particular to an experimental device and an experimental method for gas-solid two-phase shock tube flash X-ray imaging. Background technique [0002] Explosive dispersion of particles exists in a wide variety of engineering problems, including in inhomogeneous explosions where solid particles are initially mixed with the explosive material. In the early load flow, the solid phase particles are densely distributed in the gas-solid flow with complex dynamics. Although the understanding of compressible dense gas-solid flows has improved over the past few years, a better understanding of particle transport requires data from within dense particle fields that are often optically opaque to methods using visible light, leading to When analyzing and observing the dense particle field, good results cannot be obtained, and the existing experimental technology is difficult to solve the experimental ob...

AI Technical Summary

Problems solved by technology

Although the understanding of compressible dense gas-solid flows has improved over the past few years, a better understanding of particle transport requires data from within dense particle fields that are often optically opaque to methods using visible light, leading to In the analysis and observation of dense particle fields, good results cannot be obtained, and the existing experimental techniques are difficult to solve the experimental observation problems of particle volume fraction distribution and shock wave structure at the same time

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