Adjoint-based error estimation and adaptive mesh refinement for the RANS and k-ω turbulence model equations

JOURNAL OF COMPUTATIONAL PHYSICS

卷:230

Article

Hartmann, Ralf¹ 

[1] DLR German Aerosp Ctr, Inst Aerodynam & Flow Technol, D-38108 Braunschweig, Germany

关键词: Error estimation;    Goal-oriented mesh refinement;    Turbulent flows;    Discontinuous Galerkin method;   

DOI  :  10.1016/j.jcp.2010.10.026

来源: Elsevier

【 摘 要 】

article we present the extension of the a posteriori error estimation and goal-oriented mesh refinement approach from laminar to turbulent flows, which are governed by the Reynolds-averaged Navier-Stokes and k-omega turbulence model (RANS-k omega) equations. In particular, we consider a discontinuous Galerkin discretization of the RANS-k omega equations and use it within an adjoint-based error estimation and adaptive mesh refinement algorithm that targets the reduction of the discretization error in single as well as in multiple aerodynamic force coefficients. The accuracy of the error estimation and the performance of the goal-oriented mesh refinement algorithm is demonstrated for various test cases, including a two-dimensional turbulent flow around a three-element high lift configuration and a three-dimensional turbulent flow around a wing-body configuration. (C) 2010 Elsevier Inc. All rights reserved.

【 授权许可】

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