2412 半開放型軸流ファンの送風機負荷が翼先端漏れ渦に及ぼす影響(S41-1 流体機械に関連した複雑内部流動の解析と計測(圧縮機・ファン),S41 流体機械に関連した複雑内部流動の解析と計測)  [in Japanese] 2412 Effect of Fan Loading on Tip Leakage Vortex in a Semi-open Axial Fan  [in Japanese]

In order to clarify the behavior of tip leakage vortex in a semi-open axial fan, the experimental investigation was carried out using the Laser Doppler Velocimetery. Velocity vector maps were obtained at the blade rotor tip region and the pattern including tip leakage vortex were clarified As a result, it is found that the trace of tip leakage vortex changes as the fan loading changes. Furthermore, it is also found that the trace of tip leakage vortex changes as the tip clearance size changes.