2000•Journal of the Korean Society for Aeronautical & Space SciencesRequires access
On The Developing Process of A Steady Supersonic Flow in A Shock Tube
Heejoon Lee, Dong-Gyun Park, Se-Myong Chang, Keun‐Shik Chang
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Abstract
Development of the steady supersonic flow from the moving shock wave in the KAIST shock tube is studied experimentally and numerically. Helium gas is used to obtain the initial incident shock wave of Mach number 2.59. A supersonic nozzle designed by the characteristic theory is installed inside the KAIST shock tube. The flow is impeded by the reflected shock wave, which is formed unavoidably when the incident shock wave collides with a blunt body model in the test section, before it is accelerated to a steady supersonic flow to form a standing bow shock wave in front of the model. Numerical analysis is also performed to simulate the process of establishing a standing bow shock wave from the initial moving shock wave in front of the blunt body.