Abstract
In recent years, commercial software is often used for a design process of fluid machine having a complicated structure. According to this method, the predicted performance was not achieved due to the bad quality solution. In order to authorize the computational accuracy, velocity field with large separation computed by commercial software was compared with measured value by the PIV method. The purpose of this investigation is to show the indication of how to use of the computational method by the commercial software in design process. As the results of this investigation, a quantitative comparison of numerical and experimental result was able to be confirmed in the low Reynolds number area.
