Abstract
The purpose of this research is to propose theoretical flow models between axial fan blades verified with flow visualization. The models based on lifting line theory will be useful to calculate the axial velocity of the fans. The flow visualization that will clarify vectors of the real flow around the blades consists of two steps as follows: first is flow image acquisition around rotating blades using an image rotating system we have developed, second is vectors acquisition from the images using PIV analysis. We conclude that the flow visualization can improve fan design.
