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Numerical Study of the Subsonic Base Flow with a Side Support

You, Yancheng and Oßwald, Kai and Lüdeke, Heinrich and Hannemann, Volker (2011) Numerical Study of the Subsonic Base Flow with a Side Support.

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Abstract The base flow of a generic rocket model is investigated numerically with different levels of turbulence modelling. At the nominal flow conditions, the comparison with the experiments shows significant deviations in the vertical plane where a side support stands as well as 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 a angle of attack 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 performed with a DES, the DES seems to capture this sensitivity.

Document Type:Proceedings
Title:Numerical Study of the Subsonic Base Flow with a Side Support
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
Keywords:Base Flows, Detach Eddy Simulation, Subsonic, Rocket
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:other
DLR - Research area:Raumfahrt
DLR - Program:R - no assignement
DLR - Research theme (Project):R -- no assignement
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:13 Sep 2012 13:43

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