Development of an overset grid computational fluid dynamics solver on graphical processing units

This thesis work involves writing two dimensional inviscid flow solvers on Graphical Processing Units (GPUs) as part of a complete overset grid computational fluid dynamics solver. The off body and the near body compressible inviscid flow solvers are developed using Compute Unified Device Architecture (CUDA) and their comparison is done with respective serial C codes. Variable order - 2nd, 4th and 6th order accurate schemes along with respective artificial dissipation terms are used in the Cartesian off body solver while a Roe's approximate Riemann solver with MUSCL limiter is used for the curvilinear near body solver aimed at a total variation diminishing shock capturing method. A maximum speed up of 16x is demonstrated for the off body structured cartesian inviscid flow solver and 27x is demonstrated for the structured curvilinear near body solver.