Acceleration of turbulent wind simulation using locally mesh-refined Lattice Boltzmann Method

Onodera, Naoyuki   ; Idomura, Yasuhiro   

A real-time simulation of the environmental dynamics of radioactive substances is very important from the viewpoint of nuclear security. We develop a CFD code based on a Lattice Boltzmann Method (LBM) with a block-based Adaptive Mesh Refinement (AMR) method. The code is tuned to achieve high performance on the latest Pascal GPU architecture. By introducing a temporal blocking technique, the number of the MPI communications is significantly reduced.