CFD Analysis of Unstart Characteristics of the HyShot-II Scramjet Configuration in the HEG Shock Tunnel
Karl, Sebastian and Martinez Schramm, Jan and Hannemann, Klaus (2011) CFD Analysis of Unstart Characteristics of the HyShot-II Scramjet Configuration in the HEG Shock Tunnel. 17th AIAA International Space Planes and Hypersonic Systems and Technology Conference, April 2011, San Francisco, USA.
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Ground based testing of the generic HyShot II scramjet configuration was carried out in the High Enthalpy Shock Tunnel Göttingen, HEG, of the German Aerospace Center, DLR, and computational fluid dynamics (CFD) was applied to support the analysis of the experimental results. In the present article, the extension of previous numerical analyses which focused on the HyShot II design condition (equivalence ratio of approximately 0.3) to unsteady flow situations in the combustor is discussed. With increasing fuel equivalence ratio, a transition from steady to unsteady flow was observed experimentally. In the framework of scramjet engine design it is of particular interest to identify and to correctly predict the limiting operating conditions, e.g., engine unstart. Therfore, in conjunction with the test campaign performed in HEG, a parametric CFD study was performed utilizing the DLR TAU code to investigate the onset of unsteady combustor flow. Unsteady Reynolds averaged Navier-Stokes (URANS) computations were performed for off-design equivalence ratios above 0.6.
|Document Type:||Conference or Workshop Item (Speech, Paper)|
|Title:||CFD Analysis of Unstart Characteristics of the HyShot-II Scramjet Configuration in the HEG Shock Tunnel|
|In ISI Web of Science:||No|
|Series Name:||Conference Proceedings online|
|Event Title:||17th AIAA International Space Planes and Hypersonic Systems and Technology Conference|
|Event Location:||San Francisco, USA|
|Event Type:||international Conference|
|Event Dates:||April 2011|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Space|
|HGF - Program Themes:||W RP - Raumtransport|
|DLR - Research area:||Space|
|DLR - Program:||W RP - Raumtransport|
|DLR - Research theme (Project):||W - Raumfahrzeugsysteme - Numerische Verfahren und Simulation (old)|
|Institutes and Institutions:||Institute of Aerodynamics and Flow Technology > Spacecraft|
|Deposited By:||Sebastian Karl|
|Deposited On:||21 Nov 2011 15:31|
|Last Modified:||21 Nov 2011 15:31|
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