Development status of indigenous computational fluid dynamics software for arbitrary complex geometry

Abstract

This paper describes the development status of an indigenous Computational Fluid Dynamics (CFD) software (FLOWSIM) capable of handling complex geometry. It addresses the development of the pre-processor, post-processor as well as the flow solvers that can handle a wide range of computational meshes. The flow solvers employ the second-order accurate cell vertex Finite Volume Method for space discretisation and multi-stage Runge-Kutta explicit time integration to solve the unsteady Reynolds Averaged Navier-Stokes (RANS) equations, where its unstructured counterparts are integrated with the commercial pre- and post-processor; it is time-effective and the range of simulations that can be attempted is extended towards complex geometry. Finally, the paper discusses the applications of this newly developed CFD software, together with the verification of results with predictions from commercial codes as well as experimental data..