Multi-dimensional limiting for high-order schemes including turbulence and combustion

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• 作者：Peter Gerlinger ; ^{pter.gerlinger@dlr.de}
• 关键词：Higher order spatial discretization ; Multi-dimensional limiting process ; Shock resolution ; TVD condition ; Compressible flow ; Combustion ; Turbulence model
• 刊名：Journal of Computational Physics
• 出版年：2012
• 出版时间：1 March 2012
• 年：2012
• 卷：231
• 期：5
• 页码：2199-2228
• 全文大小：2379 K

文摘

In the present paper a fourth/fifth order upwind biased limiting strategy is presented for the simulation of turbulent flows and combustion. Because high order numerical schemes usually suffer from stability problems and TVD approaches often prevent convergence to machine accuracy the multi-dimensional limiting process (MLP) is employed. MLP uses information from diagonal volumes of a discretization stencil. It interacts with the TVD limiter in such a way, that local extrema at the corner points of the volume are avoided. This stabilizes the numerical scheme and enables convergence in cases, where standard limiters fail to converge. Up to now MLP has been used for inviscid and laminar flows only. In the present paper this technique is applied to fully turbulent sub- and supersonic flows simulated with a low Reynolds-number turbulence closure. Additionally, combustion based on finite-rate chemistry is investigated. An improved MLP version (MLP^ld, low diffusion) as well as an analysis of its capabilities and limitations are given. It is demonstrated, that the scheme offers high accuracy and robustness while keeping the computational cost low. Both steady and unsteady test cases are investigated.