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A comparative study of two preconditioners for solving 3D inviscid low speed flows

Hejranfar, K ; Sharif University of Technology | 2012

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  1. Type of Document: Article
  2. DOI: 10.4028/www.scientific.net/AMM.110-116.423
  3. Publisher: 2012
  4. Abstract:
  5. In the present study, two preconditioners proposed by Eriksson, and Choi and Merkel are implemented on a 3D upwind Euler flow solver on unstructured meshes. The mathematical formulations of these preconditioning schemes for the set of primitive variables Q→p 1=[ρ u v , w p] T are drawn and their eigenvalues and eigenvectors are compared with each others. A cell-centered finite volume Roe's method is used for discretization of the 3D preconditioned Euler equations. The accuracy and performance of these preconditioning schemes are examined by computing low Mach number flows over the ONERA M6 wing for different conditions
  6. Keywords:
  7. 3D Euler equations ; Condition number ; Low Mach Number Flows ; 3D Euler equation ; Comparative studies ; Condition numbers ; Discretizations ; Eigenvalues and eigenvectors ; Euler flows ; Finite volume ; Low-Mach-number flow ; Low-speed flow ; Mathematical formulation ; Preconditioners ; Preconditioning ; Primitive variables ; Roe's methods ; Unstructured meshes ; Aerodynamics ; Aerospace engineering ; Eigenvalues and eigenfunctions ; Mach number ; Number theory ; Three dimensional ; Euler equations
  8. Source: Applied Mechanics and Materials ; Volume 110-116 , 2012 , Pages 423-430 ; 16609336 (ISSN) ; 9783037852620 (ISBN)
  9. URL: http://www.scientific.net/AMM.110-116.423