Abstract
The purpose of this study is to clarify the flow pattern in the curved diffuser and to improve its performance.
In this study, the effects of the variation in interposed position of the guide vane in the curved diffuser and the existence of the straight duct connected at the rear of the curved diffuser on the flow pattern of the logarithmic spiral curved diffuser were clarified by the flow visualization using dye flow method, and their results were compared with the numerical solutions obtained by the finite element method.
As the results, it was found that the flow patterns obtained by the flow visualization almost agreed with numerical results, and especially, the performance of the curved diffuser was affected considerably by the interposed position of the guide vane.
