Fluid simulation with SIMPLE method using graphic processors

Ivan Devic
Department of Physics, Faculty of Natural Sciences and Mathematics, University of Split
University of Split, 2014


   title={Fluid simulation with SIMPLE method using graphic processors},

   author={Devic, Ivan},



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In this thesis we explore how application of graphics processors can accelerate calculations in fluid dynamics. We derive semi-implicit pressure linked equations (SIMPLE) and present SIMPLE method (algorithm) which is used with a great success in calculation of steady flows. Motivation for using graphics processors (GPUs) comes from their ability to significantly shorten execution time of fluid flow calculations. Our implementation of the SIMPLE algorithm on GPUs proved to be faster than CPU code by a factor larger then ten. We test our GPU code in two common problems in fluid dynamics: driven lid cavity and backwards facing step. Implementation of external forces on the fluid will also be implemented via plasma actuators, which have been explored as a tool for reducing turbulencies and noise made by interaction between airplane wing and fluid. Our numerical results show that plasma actuators pull the fluid streams closer to the surface of the backwards facing step, as the size of the fluid vortex is reduced.
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