Generalized and efficient wall boundary condition treatment in GPU-accelerated smoothed particle hydrodynamics

This paper presents a generalised and efficient wall boundary treatment in the smoothed particle hydrodynamics (SPH) method for 3-D complex arbitrary geometries with single- multi-phase flows to be executed on graphics processing units (GPUs). Using force balance between fluid particles novel penalty method, pressure condition is applied dummy which effectively prevents non-physical penetration into boundaries also highly violent impacts high density ratios. A new reinitialisation scheme presented enhance accuracy. The proposed very simple comparison previous formulations GPUs that enforces no additional memory caching thus ideally suited heterogeneous architectures of GPUs. validated various test cases involving demonstrates good robustness, accuracy performance. able improve its version \citep{ADAMI2012wall} problems, while it efficiently executable single precision floating points arithmetic makes suitable wide range GPUs, including consumer graphic cards. Therefore, reliable solution long-lasting challenge SPH broad natural industrial applications.