Real-time wind simulation using locally mesh-refined lattice Boltzmann method

Onodera, Naoyuki

no journal, , 

A plume-dispersion simulation of the environmental dynamics of radioactive sub-stances is very important from the viewpoint of nuclear security. Since air-flows in large cities are turbulent with Reynolds numbers of several million, large-scale CFD simulations are needed. We developed a CFD code based on the adaptive mesh-refined Lattice Boltzmann Method (AMR-LBM) on GPU-rich supercomputers. In this presentation, we realize both high-resolution and real-time wind simulations in urban areas on the NVIDIA DGX-2 supercomputer.