A conservative coupling algorithm between a compressible flow and a rigid body using an Embedded Boundary method

JOURNAL OF COMPUTATIONAL PHYSICS

卷:231

Article

Monasse, L.^1,2,3  Daru, V.^3,4  Mariotti, C.²  Piperno, S.¹  Tenaud, C.³ 

[1] Univ Paris Est, CERMICS, F-77455 Marne La Vallee, France

[2] CEA DIF, F-91297 Arpajon, France

[3] CNRS, LIMSI, F-91403 Orsay, France

[4] Arts & Metiers Paris Tech, DynFluid Lab, F-75013 Paris, France

关键词: Compressible flows;    Shock capturing scheme;    Discrete Element method;    Fluid-structure interaction;    Embedded Boundary method;   

DOI  :  10.1016/j.jcp.2012.01.002

来源: Elsevier

【 摘 要 】

This paper deals with a new solid-fluid coupling algorithm between a rigid body and an unsteady compressible fluid flow, using an Embedded Boundary method. The coupling with a rigid body is a first step towards the coupling with a Discrete Element method. The flow is computed using a finite volume approach on a Cartesian grid. The expression of numerical fluxes does not affect the general coupling algorithm and we use a one-step high-order scheme proposed by Daru and Tenaud [V. Daru, C. Tenaud, J. Comput. Phys. (2004)]. The Embedded Boundary method is used to integrate the presence of a solid boundary in the fluid. The coupling algorithm is totally explicit and ensures exact mass conservation and a balance of momentum and energy between the fluid and the solid. It is shown that the scheme preserves uniform movement of both fluid and solid and introduces no numerical boundary roughness. The efficiency of the method is demonstrated on challenging one- and two-dimensional benchmarks. (C) 2012 Elsevier Inc. All rights reserved.

【 授权许可】

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