Abstract
It is a very important problem to make clear the flow between rotor blades of the rotating impellers about blowers ers or compressors, for improving the performance of these turbomachines. Then, the flow visualization method is the most effective technique for this problem. But it is very difficult to visualize the relative flow in a rotating impeller.
In this paper, this flow was visualized by a spark tracing method, and obserbed the image by Stroborotator using the principle of a rotationg triangle prism.
