チューブラ水車用S形吸出し管に関する研究 : 第2報,性能の悪いS形吸出し管の改善方法および非定常二次流れ

概要

論文の詳細を見る
This paper proposes the possibility of significantly improving the performance of sharply bent S-draft tubes by a conventional, but comparatively simple method. The method is to adjust the divergent angle of the conical straight portion at the upstream part of the draft tube. This paper also describes the method. We have further revealed the phenomenon that the secondary flow in an S-draft tube, which is sharply bent at the bend, changes its direction intermittently. This phenomenon is important because the use of sharply bent S-draft tubes is preferred in some cases due to civil engineering conditions for turbine installation. Therefore, this report attempts to clarify the phenomenon in detail.
一般社団法人日本機械学会の論文
1987-08-25