Effect of Boundary-Layer Growth in a Shock Tube on Shock Reflection from a Closed End
- 1 December 1961
- journal article
- research article
- Published by AIP Publishing in Physics of Fluids
- Vol. 4 (12), 1463-1473
- https://doi.org/10.1063/1.1706244
Abstract
The pressure behind a shock wave propagating in a constant‐area duct increases slightly with time as a result of the growing boundary layer. This rise is considerably magnified by the shock reflection from the closed end of the duct. Analysis of the local interaction of the reflected shock with the boundary layer yields information on the shock configuration, but the combined effects of the waves produced by the growing boundary layer along the entire shock tube must be considered to obtain the state of the gas behind the reflected shock. The theory of the flow field behind the incident shock is modified to allow for effects in addition to boundary‐layer growth which cause deviations from an ideal shock‐tube flow. Experimental observations of the pressure rise behind the reflected shock, obtained for shock pressure ratios up to about 4.5 are in satisfactory agreement with the computed results, and estimates for stronger shock waves are presented.Keywords
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