Abstract
When designing fluid machines such as a windmill, it is important to consider flow pattern by computational simulation. In this paper, the numerical simulation of flow around a windmill-rotor is presented. The artificial compressibility method is used for solving the incompressible Navier-Stokes equations. The scheme used for convection term is the Roe's flux-difference splitting solver. For pseudo time, the LU-SGS method is used. These methods enable us to solve two dimensional incompressible Navier-Stokes equations. For the technique to analyze flow pattern around windmill, the overset grid is used. As a result, the pressure distribution and velocity vectors around the windmill are obtained quantitatively.
