Parallel Semi-Meshless Stencil Selection for Moving Geometry Simulations

Computational fluid dynamics methods to simulate flows around geometries in relative motion are important for the aerospace industry. A meshless method to select stencils from overlapping and moving point distributions, and a corresponding flow solver capable of solving the Euler and Navier-Stokes equations on those stencils, have been developed previously. In order for these methods to be useful in real world applications, their computational efficiency needs to be addressed. This paper extends the meshless method from previous work in an effort to increase the computational efficiency by means of parallel programming. The flow solver and the original meshless stencil selection method are presented. Then, the developed parallel algorithm is described in detail and results are shown for aerofoils in two dimensions, and for a fighter aircraft configuration as well as a transient store-release case in three dimensions.