Large-Scale Simulation of Gas-Liquid-Solid Multiphase Flow on GPU Cluster

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  • GPUを用いた固体粒子を含む固気液三相流の大規模シミュレーション
  • GPU オ モチイタ コタイ リュウシ オ フクム コキエキ サンソウリュウ ノ ダイキボ シミュレーション

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Numerical simulation of gas-liquid-solid interaction is one of the most challenging themes in CFD (Computational Fluid Dynamics). In order to understand the detail of the interface deformation and separation, it is necessary to carry out high-order accurate and large-scale CFD simulations. We have developed a CFD code based on a novel interface capture method, AMG-BiCGSTAB solver, 5th-order WENO scheme, and immersed boundary method (IBM). The code is written in CUDA, and the GPU kernel function is tuned to achieve high performance and good scalability on the TSUBAME supercomputer. It has become possible to carry out large-scale multiphase flow simulations. In a violent air-water flow, small splashes by collision of a particle are described clearly, and good performance scalability is also shown for multi-GPU computing.

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