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Numerical Investigation of a Generic Rocket Base Flows under Subsonic Conditions

You, Yancheng and Oßwald, Kai and Lüdeke, Heinrich and Hannemann, Volker (2011) Numerical Investigation of a Generic Rocket Base Flows under Subsonic Conditions. In: Sonderforschungsbereich Transregio 40 - Jahresbericht 2010 Deutsche Forschungsgemeinschaft (DFG) Deutsche Forschungsgemeinschaft (DFG).

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Abstract

The base flow of a generic rocket model is investigated numerically with different levels of turbulence modeling. The comparison with the experiments shows at the nominal flow conditions significant deviations in the horizontal plane and the base pressure distribution. A simulation of the open test section is presented, which indicates on the one hand a correction of the measured pressure values and on the other hand an angle ofattack modification in comparing the DES results with the experimental values. Based on both correction the DES results agree well with the experiment. A strong sensitivity towards small angles of attack has been observed in the experiments but not in respective RANS solutions. Although no variation of the angle of attack has been feasible with a DES, the DES seems to capture this sensitivity.

Document Type:Contribution to a Collection
Title:Numerical Investigation of a Generic Rocket Base Flows under Subsonic Conditions
Authors:
AuthorsInstitution or Email of Authors
You, Yanchengyancheng.you@dlr.de
Oßwald, Kaikai.osswald@dlr.de
Lüdeke, Heinrichheinrich.luedeke@dlr.de
Hannemann, Volkervolker.hannemann@dlr.de
Date:2011
Journal or Publication Title:Sonderforschungsbereich Transregio 40 - Jahresbericht 2010 Deutsche Forschungsgemeinschaft (DFG)
Refereed publication:Yes
Publisher:Deutsche Forschungsgemeinschaft (DFG)
Status:Published
Keywords:Base Flows, Detach Eddy Simulation, Subsonic, Rocket
Institution:Institute of Aerodynamcis and Flow Technology
Department:Spacecraft Department
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 - Leitprojekt - Propulsion 2010 / CFD und Simulation (old)
Location: Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Spacecraft
Deposited By: Yancheng You
Deposited On:30 Nov 2011 11:37
Last Modified:15 Mar 2013 09:47

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