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CFD Analysis of Unsteady Combustion Phenomena in the HyShot-II Scramjet Configuration

Karl, Sebastian and Laurence, Stuart and Martinez, Jan and Hannmann, Klaus (2012) CFD Analysis of Unsteady Combustion Phenomena in the HyShot-II Scramjet Configuration. American Institute of Aeronautics and Astronautics. 18th AIAA/3AF International Space Planes and Hypersonic Systems and Technologies Conference, 24. - 28. Sep. 2012, Tours, France. DOI: 10.2514/6.2012-5912

Full text not available from this repository.

Official URL: http://arc.aiaa.org/doi/book/10.2514/MHYP12

Abstract

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. Previous numerical analysis was mainly focused on the steady-state design conditions at an equivalence ratio of approximately 0.3. Preliminary computations at large equivalence ratios showed that a change in flow topology corresponding to a transition from supersonic to subsonic combustion occurs. The formation of a subsonic combustion zone is seen to lead to the upstream propagation of an unsteady shock train. This phenomenon is also observed in experimental investigations. 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 0.5.

Item URL in elib:https://elib.dlr.de/78200/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:CFD Analysis of Unsteady Combustion Phenomena in the HyShot-II Scramjet Configuration
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Karl, SebastianUNSPECIFIEDUNSPECIFIED
Laurence, StuartUNSPECIFIEDUNSPECIFIED
Martinez, JanUNSPECIFIEDUNSPECIFIED
Hannmann, KlausUNSPECIFIEDUNSPECIFIED
Date:September 2012
Refereed publication:No
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:No
In ISI Web of Science:No
DOI :10.2514/6.2012-5912
Publisher:American Institute of Aeronautics and Astronautics
Series Name:Conference Proceedings online
Status:Published
Keywords:CFD, hypersonics, HySHot, HEG, Scramjet, combustion
Event Title:18th AIAA/3AF International Space Planes and Hypersonic Systems and Technologies Conference
Event Location:Tours, France
Event Type:international Conference
Event Dates:24. - 28. Sep. 2012
Organizer:AIAA
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transport
DLR - Research area:Raumfahrt
DLR - Program:R RP - Raumtransport
DLR - Research theme (Project):R - Raumfahrzeugsysteme - Numerische Verfahren und Simulation
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Spacecraft
Deposited By: Karl, Sebastian
Deposited On:26 Nov 2012 13:44
Last Modified:21 Dec 2012 10:06

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