Abstract
This paper presents numerical simulations for the prediction of the flow around the Ahmed body, with the 25\(^\circ \) and 35\(^\circ \) slant angles, obtained with the flow solver ISIS-CFD. A RANS (Reynolds Averaged Navier-Stokes) turbulence model, as EARSM (Explicit Algebraic Stress Model) and two hybrid RANS-LES models, as DES (Detached Eddy Simulation) and IDDES (Improved Delay Detached Eddy Simulation) models, are used. All these turbulence models are based on the k-\(\omega \) model. The use of a hybrid RANS-LES model, and more particularly the IDDES model, offers an advantage over RANS models in term of the force coefficients, and general flow field.
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This work was granted access to the HPC resources of CINES/IDRIS under the allocation 2015-2a0129 made by GENCI
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Guilmineau, E., Deng, G.B., Queutey, P., Visonneau, M. (2018). Assessment of Hybrid LES Formulations for Flow Simulation Around the Ahmed Body. In: Deville, M., et al. Turbulence and Interactions. TI 2015. Notes on Numerical Fluid Mechanics and Multidisciplinary Design, vol 135. Springer, Cham. https://doi.org/10.1007/978-3-319-60387-2_18
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DOI: https://doi.org/10.1007/978-3-319-60387-2_18
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