Abstract
To solve the flow around the complex geometries is one of the difficult problems for Computational Fluid Dynamics (CFD). To overcome this problem, we have already proposed the method for solving the preconditioned compressible Navier-Stokes equations using an Immersed Boundary (IB) method and a Building-Cube Method (BCM). Although the method has several advantages, the solution convergence deteriorates while increasing number of cubes. In this paper, improvement of convergence is presented by applying an Implicit Residual Smoothing (IRS) for CFD with “multi-cube”. The reason of acceleration is considered as propagation of residual. Finally, improved algorithm for IRS is also proposed.
