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Numerical Computations Of Supersonic Base Flow With Special Emphasis On Turbulence Modeling

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Numerical Computations Of Supersonic Base Flow With Special Emphasis On Turbulence Modeling

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Author : Jubaraj Sahu
language : en
Publisher:
Release Date : 1994

Numerical Computations Of Supersonic Base Flow With Special Emphasis On Turbulence Modeling written by Jubaraj Sahu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Aerodynamics, Supersonic categories.

A zonal, implicit, time-marching Navier-Stokes computational technique has been used to compute the turbulent supersonic base flow over cylindrical afterbodies. A critical element of calculating such flows is the turbulence model. Various eddy viscosity turbulence models have been used in the base region flow computations. These models include two algebraic turbulence models and a two-equation k-epsilon model. The k-epsilon equations are developed in a general coordinate system and solved using an implicit algorithm. Calculations with the k-epsilon model are extended up to the wall. Flow field computations have been performed for a cylindrical afterbody at M = 2.46 and at angle of attack alpha = 0. The results are compared to the experimental data for the same conditions and the same configuration. Details of the mean flow field as well as the turbulence quantifies have been presented. In addition, the computed base pressure distribution has been compared with the experiment. In general, the k-epsilon turbulence model performs better in the near wake than the algebraic models and predicts the base pressure much better.

Numerical Computations Of Supersonic Base Flow With Special Emphasis On Turbulence Modeling

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Author :
language : en
Publisher:
Release Date : 1994

Numerical Computations Of Supersonic Base Flow With Special Emphasis On Turbulence Modeling written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with categories.

Scientific And Technical Aerospace Reports

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Author :
language : en
Publisher:
Release Date : 1995

Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Aeronautics categories.

40th Aiaa Aerospace Sciences Meeting Exhibit

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Author :
language : en
Publisher:
Release Date : 2002

40th Aiaa Aerospace Sciences Meeting Exhibit written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Aeronautics categories.

41st Aiaa Aerospace Sciences Meeting Exhibit

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Author :
language : en
Publisher:
Release Date : 2003

41st Aiaa Aerospace Sciences Meeting Exhibit written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Aeronautics categories.

Aiaa Aerospace Sciences Meeting And Exhibit 42nd

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Author :
language : en
Publisher:
Release Date : 2004

Aiaa Aerospace Sciences Meeting And Exhibit 42nd written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Aeronautics categories.

Respace Key Technologies For Reusable Space Systems

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Author : Ali Gülhan
language : en
Publisher: Springer Science & Business Media
Release Date : 2008-01-24

Respace Key Technologies For Reusable Space Systems written by Ali Gülhan and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-01-24 with Technology & Engineering categories.

A few years ago the Helmholtz Association (HGF) consisting of 15 research Institutions including the German Aerospace Center (DLR) started a network research program called ‘Virtual Institutes’. The basic idea of this program was to establish research groups formed by Helmholtz research centers and universities to study and develop methods or technologies for future applications and educate young scientists. It should also enable and encourage the partners of this Virtual Institute after 3 years funding to continue their cooperation in other programs. Following this HGF request and chance the DLR Windtunnel Department of the Institute of Aerodynamics and Flow Technology took the initiative and established a network with other DLR institutes and German u- versities RWTH Aachen, University of Stuttgart and Technical University Munich. The main goal of this network was to share the experience in system analysis, ae- dynamics and material science for aerospace for improving the understanding and applicability of some key technologies for future reusable space transportation s- tems. Therefore, the virtual institute was named RESPACE (Key Technologies for Re- Usable Space Systems).