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A Novel Conservative Lagrangian Immersed Boundary Method For Wind Turbine Simulations

Abstract : This work presents a novel conservative Lagrangian immersed boundary method (CLIB) to solve incompressible viscous fluid flow problems around solid geometries. Classical immersed boundary methods (IBM) are known to face mass and momentum conservation issues at the frontier between solid and fluid. This original method couples the penalty IBM with a Lagrangian volume of solid (VOS) formulation introducing some extra source terms in the governing equations. These terms serve to represent the existence of a solid body inside the fluid domain and give rise to a fully conservative system of equations. Solid mass conservation is guaranteed thanks to a Lagrangian representation of the solid volume fraction field and is proven effectively independent of the grid resolution. The accuracy of the present method is demonstrated by the good agreement of aerodynamic quantities for two-dimensional flows around stationary and mobile (rotating, oscillating) rigid solid bodies with the values found in literature.
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Submitted on : Monday, September 27, 2021 - 10:08:09 PM
Last modification on : Thursday, November 18, 2021 - 6:06:04 PM
Long-term archiving on: : Tuesday, December 28, 2021 - 7:22:59 PM


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  • HAL Id : hal-03356313, version 1


Iason Tsetoglou, Pierre Benard, Ghislain Lartigue, Vincent Moureau, Julien Reveillon. A Novel Conservative Lagrangian Immersed Boundary Method For Wind Turbine Simulations. The 13th International ERCOFTAC symposium on engineering, turbulence, modelling and measurements, Sep 2021, Rhodes, Greece. ⟨hal-03356313⟩



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