Abstract
It is quite usual that the small axial flow fan used for PCs is installed in a narrow space. In such cases the fan performance and flow field are supposed to be different from those design conditions. In addition, influences that obstacles upstream and downstream of the fan give to the fan performance are not well understood. In this study, we measure the flow field and performance of the fan used under realistic conditions. Furthermore, we compare calculated results with the experiment results. According to the measurement, some changes are observed in the performance and flow field of the fan used at the narrow space.
