Towards real-time immersed boundary lattice Boltzmann CFD simulation tool for transient indoor contaminant dispersion

A lattice Boltzmann method (LBM)-based large eddy simulation (LES) technique with immersed boundary method (IBM) to couple the dynamics of a moving object (rigid) has been implemented on the graphics processing unit (GPU). This allows us to compute in real-time the time evolution of the indoor air flow and contaminants in the presence of heat sources and moving objects (human and door motions). Our method circumvents the need of boundary conforming adaptive grids with added advantage of speed of computation.