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Combination of the immersed boundary method with compact schemes for DNS of flows in complex geometry

Abstract : We present a direct forcing method better suited for the use of compact finite difference schemes in Direct Numerical Simulation. The new forcing creates inside the body an artificial flow preserving the no-slip condition at the surface but reducing the step-like change of the velocity derivativesacross the immersed boundary. This modificationis shown to improve results both qualitatively and quantitatively for conventional and complex flow geometries.
Keywords : FRONTIERE IMMERGEE
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https://hal.inrae.fr/hal-02583326
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Submitted on : Thursday, May 14, 2020 - 10:19:23 PM
Last modification on : Friday, April 9, 2021 - 3:32:38 AM

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  • HAL Id : hal-02583326, version 1
  • IRSTEA : PUB00014713

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P. Parnaudeau, E. Lamballais, Dominique Heitz, J.H. Silvestrini. Combination of the immersed boundary method with compact schemes for DNS of flows in complex geometry. Direct and large-eddy simulation 5, 2003, pp.10. ⟨hal-02583326⟩

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