Numerical and experimental investigation of the effect of bypass mass flow due to small gaps in a transonic channel flow
Giglmaier, Marcus and Quaatz, Jan Frederik and Gawehn, Thomas and Gülhan, Ali and Adams, Nikolaus A. (2011) Numerical and experimental investigation of the effect of bypass mass flow due to small gaps in a transonic channel flow. 28th International Symposium on Shock Waves, 17 - 22 July 2011, Manchester (UK).
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In order to perform Schlieren visualizations of transonic nozzle flows, quartz glass windows are mounted on both side walls of the test section. However, to avoid strong stresses within the glass, these windows cannot be flush mounted to the facility.Thus, small gaps of delta x = O(10-4) m occur between the glass side walls and the metal contour. During a previous investigation we observed that these gaps result in a small bypass mass flow that affects the pressure distribution within the supersonic part of the Laval nozzle as well as the shock location. The focus of the present study is put on detailed numerical analysis of the flow within the gaps and its feedback on the transonic base flow within a slender nozzle.
|Document Type:||Conference or Workshop Item (Paper)|
|Title:||Numerical and experimental investigation of the effect of bypass mass flow due to small gaps in a transonic channel flow|
|Keywords:||Laval Nozzle Flow, Pseudo-shock system, Shock train, Gap influence|
|Event Title:||28th International Symposium on Shock Waves|
|Event Location:||Manchester (UK)|
|Event Type:||international Conference|
|Event Dates:||17 - 22 July 2011|
|Organizer:||The University of Manchester, Aero-Physics Laboratory|
|HGF - Research field:||no assignement|
|HGF - Program:||no assignment|
|HGF - Program Themes:||no assignment|
|DLR - Research area:||no assignement|
|DLR - Program:||no assignment|
|DLR - Research theme (Project):||other|
|Institutes and Institutions:||Institute of Aerodynamics and Flow Technology > Supersonic and Hypersonic Technology|
|Deposited By:||Dr.-Ing. Thomas Gawehn|
|Deposited On:||04 Oct 2011 07:32|
|Last Modified:||04 Oct 2011 07:32|
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