Gas-solid phase shock tube experiment device and experiment method

Abstract

The invention discloses a gas-solid phase shock tube experiment device and an experiment method. The gas-solid phase shock tube experiment device comprises a high air pressure segment, a burst diaphragm, an air pressure segment, a round-to-square transitional segment, a first square tube segment, a visual test segment, a second square tube segment and a collection tank, wherein a particle storage release assembly is arranged at the top end of the visual test segment, and a particle collection tube segment is arranged at the bottom end; a dynamic weighing balance is arranged below the particle collection tube segment; solid particles fall down under the action of gravity, pass through the visual test segment to form a particle curtain, and fall to the dynamic weighing balance; a first pressure sensor and a second pressure sensor are arranged on the first square tube segment, and a third pressure sensor and a fourth pressure sensor are arranged on the second square tube segment; the particle storage release assembly realizes adjustment of the thickness and volume fraction of the particle curtain, and the pressure sensors collect the attenuation change of a shock wave. According to the gas-solid phase shock tube experiment device and the experiment method, by controlling the particle curtain thickness and volume fraction of different test particles and changing the mach number of the shock wave, behavior characteristics and influence rules of mutual action between the shock wave and a dense particle group can be observed and analyzed.

Description

technical field [0001] The invention relates to a shock tube experimental device, in particular to a gas-solid two-phase shock tube experimental device and an experimental method. Background technique [0002] The interaction between shock wave and particle group is a common and important phenomenon in compressible particle load flow, which involves many fields such as aerospace, medical and health, safety prevention and control, and environmental protection. Fuel propulsion, high-speed flight in dusty atmosphere, needle-free injection of drug powder, supersonic cold spraying, dry powder fire extinguishing, dust explosion, volcanic eruption, etc. To carry out the research on the complex gas-solid two-phase flow problem when the shock wave interacts with the dense particle group, the key lies in the regulation of the shock Mach number, the initial spatial distribution of the particles before the incident shock wave interacts with the dense particle group, and the regulation o...

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Problems solved by technology

[0003]Because the usual experimental conditions require that the particle group is initially approximately at rest, if the particle is placed in the loading chamber, due to gravity, the particles will concentrate in the loading chamber. The bottom of the chamber or fill the entire loading chamber, and the initial volume fraction of the particle group obviously cannot be adjusted, so the prior art lacks the experimental device for the above requirements

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