Shock tube sparse wave eliminating device capable of weakening self-reflected wave
By setting a circular wave-damping plate and an arc-shaped wave-damping hole at the inlet of the shock tube, the problem of inaccurate experimental data caused by rarefaction wave backpropagation was solved, and the peak value of the shock wave was reduced and the experimental accuracy was improved.
CN223650128UActive Publication Date: 2025-12-09NORTHWEST INST OF NUCLEAR TECH
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Patent Information
- Application Number
- CN202520317695.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2035-02-26
AI Technical Summary
Technical Problem
The rarefaction wave generated at the shock tube inlet propagates upstream, causing inaccurate experimental data.
Method used
A circular wave-damping plate is installed at the inlet of the shock tube. The wave-damping plate has a central wave-damping hole and an edge wave-damping hole. The inner wall surface of the central wave-damping hole and the edge wave-damping hole is set as an annular protrusion with a circular arc cross section along the circumference, and is fixed by bolted flange.
Benefits of technology
It effectively reduces the peak value of the shock wave backflow reflection wave, improves experimental accuracy, prevents jet contraction effect, and improves the efficiency of rarefaction wave elimination.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model relates to an auxiliary device for simulating a shock tube by explosive waves, in particular to a shock tube sparse wave eliminating device capable of weakening self-reflected waves, and aims to solve the problem of inaccurate experimental data caused by the fact that sparse waves generated at the orifice of a shock tube are transmitted back to the upstream during an experiment. The device comprises a circular wave absorbing plate arranged at a tube opening of an explosive wave simulation shock tube; a central wave absorbing hole and at least three edge wave absorbing holes are formed in the wave absorbing plate; the central wave absorbing hole is located in the center of the wave absorbing plate, and the at least three edge wave absorbing holes are evenly distributed around the circumference of the central wave absorbing hole. The utility model can effectively weaken the peak value of the backflow reflection wave of the shock wave in the experiment and improve the experiment precision.
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