4.5 Article

Efficient GPU parallelization of adaptive mesh refinement technique for high-order compressible solver with immersed boundary

期刊

COMPUTERS & FLUIDS
卷 266, 期 -, 页码 -

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PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.compfluid.2023.106040

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Adaptive mesh refinement; Immersed boundary method; CFD; HPC; GPU; WENO

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This article presents a new high-performance ADAM library that uses adaptive mesh refinement and immersed boundary methods to solve complex fluid simulation problems. The library runs efficiently on modern GPU-accelerated supercomputers and has a highly modular structure, making it versatile for various CFD applications.
A new, highly parallelized, adaptive mesh refinement (AMR) library, equipped with an accurate immersed boundary (IB) method for solving the compressible Navier-Stokes system is presented. The library, named ADAM, is designed to efficiently exploit modern exascale GPU-accelerated supercomputers and it is implemented with a highly modular structure in order to make easy to leverage it for a wide range of CFD applications. The structured Cartesian grids at the basis of (octree) AMR approach allows to implement very high order accurate models retaining a low computational cost and high level of parallelization. The accurate IB method coupled with efficient AMR technique enables the simulation flows with complex (possibly moving and deforming) geometries. The library is applied to the simulation of a strong shock diffraction over a solid sphere and a detailed discussion concerning the physical results and the parallel performance obtained is presented.

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