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Résolution des équations de stabilité globale en régimes incompressible et compressible avec une méthode aux différences finies de haute précision

Abstract : Most of flows in fluid dynamics is concerned by unsteady phenomenon. In aerospatial issue, low-frequency instationarities have been observed during the development of rocket's motors. These phenomena, which are due to the interaction between the shock wave caused by the pressure difference between the upstream and the downstream of the rocket, and the turbulent boundary layer developing on the inner wall, can provoke deformations of the rocket or inconvenient movements of its fixing system. Many works have been tackled in order to determine its source. Stability analysis is a way. In the circumstances, the aim of this PhD thesis is to develop a curvilinear compressible global stability code in order to study the stability of the interaction in the rocket. The unknows of the problem are evaluated by a DRP finite-difference scheme. Then the code is validated through many incompressible and compressible test cases in curvilinear geometries. These configurations also show the advantage of the used discretization scheme compared to classical scheme used in this kind of problems
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https://pastel.archives-ouvertes.fr/pastel-00005302
Contributor : Ecole Arts Et Métiers Paristech <>
Submitted on : Tuesday, September 29, 2009 - 8:00:00 AM
Last modification on : Wednesday, November 29, 2017 - 9:42:52 AM
Long-term archiving on: : Friday, September 10, 2010 - 1:42:48 PM

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Xavier Merle. Résolution des équations de stabilité globale en régimes incompressible et compressible avec une méthode aux différences finies de haute précision. Sciences de l'ingénieur [physics]. Arts et Métiers ParisTech, 2009. Français. ⟨NNT : 2009ENAM0016⟩. ⟨pastel-00005302⟩

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