The VM2D Open Source Code for Two-Dimensional Incompressible Flow Simulation by Using Fully Lagrangian Vortex Particle Methods

This article describes the open-source C++ code VM2D for simulation of two-dimensional viscous incompressible flows and solving fluid-structure interaction problems. The is based on Viscous Vortex Domains (VVD) method developed by Prof. G. Ya. Dynnikova, where viscosity influence taken into account introducing diffusive velocity. original VVD was supplemented author’s algorithms boundary condition satisfaction, which made it possible to increase accuracy flow near airfoil’s surface line reduce oscillations when calculating hydrodynamic loads. paper aimed primarily at assessing efficiency parallelization algorithm. OpenMP, MPI, Nvidia CUDA parallel programming technologies are used in VM2D, allow performing simulations computer systems various architectures, including those equipped with graphics accelerators. Since belongs particle methods, usage accelerators turns out be quite high. It shown that a real simulation, one card can replace about 80 nodes, each 28 CPU cores. source available GitHub under GNU GPL license.