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Analysis of Pseudo-Shock System Structure and Asymmetry in Laval Nozzles with Parallel Side Walls

Gawehn, T. and Gülhan, A. and Al-Hasan, N. S. and Giglmaier, M. and Adams, N.A. (2010) Analysis of Pseudo-Shock System Structure and Asymmetry in Laval Nozzles with Parallel Side Walls. 19th Interantional Shock Interaction Symposium, August 31 - September 03, Moscow.

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Abstract

The scope of this work is to investigate the structure and stochastic asymmetry of pseudo-shock systems in Laval nozzles with parallel side walls in detail by numerical and experimental means. The location of the pseudo-shock system is defined in an adiabatic system of two successive chocked Laval nozzles by the ratio of the critical cross sections A2*/A1*, the stagnation pressure loss across the shock system and viscous losses. Depending on the geometry and the test conditions, the pseudo-shock system attaches stochastically to the upper and lower nozzle wall where the driving mechanism is analysed by means of high speed and short pulse Schlieren visualisation and numerical simulations.

Document Type:Conference or Workshop Item (Speech)
Title:Analysis of Pseudo-Shock System Structure and Asymmetry in Laval Nozzles with Parallel Side Walls
Authors:
AuthorsInstitution or Email of Authors
Gawehn, T.UNSPECIFIED
Gülhan, A.UNSPECIFIED
Al-Hasan, N. S.TU München
Giglmaier, M.TU München
Adams, N.A.TU München
Date:2010
Keywords:Laval nozzle, shock wave/boundary layer interaction, pseudo shock wave, asymmetric shock train
Event Title:19th Interantional Shock Interaction Symposium
Event Location:Moscow
Event Type:international Conference
Event Dates:August 31 - September 03
Organizer:Russian Academy of Sciences
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W RP - Raumtransport
DLR - Research area:Space
DLR - Program:W RP - Raumtransport
DLR - Research theme (Project):other
Location: Köln-Porz
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Supersonic and Hypersonic Technology
Deposited By: Dr.-Ing. Thomas Gawehn
Deposited On:15 Dec 2010 14:53
Last Modified:15 Dec 2010 14:53

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