フランシス形ポンプ水車の多段化における戻り流路の検討 : 第2報, 水車運転点の相達による流れと性能の把握

概要

論文の詳細を見る
Flow pattern and performance of a return channel model were investigated experimentally, under various operation points in the turbining mode. The position where the secondary flow conspicuously occurs near the return channel inlet changes gradually from the casing wall to the pressure surface of the return vane, with decreasing the turbine output power. Such a secondary flow induces swirling flow in the downstream passage and makes the through flow under-turning. The features of the hydraulic loss to the change of the turbining peration point are also decided near the return channel inlet, and the loss increases markedly in the low output power range because of the shock loss at the return vane inlet.
一般社団法人日本機械学会の論文
1997-06-25