二重反転形軸流翼車の回転数・食違い角制御のための一次元流管モデルの構築

研究成果: Contribution to journalArticle

抄録

<p>By applying contra-rotating rotors in axial flow pump, compact size and better cavitation performance have been achieved. However, deteriorated performance has also been observed at off-design operations, which may be possible to be improved by applying rotating speed control and adjustable blade in front and rear rotors. In order to predict performance of contra-rotating axial flow pump with rotational speed and stagger angle controls, a model has been proposed on the basis of one-dimensional streamtube theory and the blade element theory with empirical flow angle deviations. Numerical simulations by Computer Fluid Dynamics (CFD) have also been conducted to compare with results of 1D model. In various operation conditions with changes in the rotational speed and stagger angle of rotors, total head evaluated by 1D model shows good agreement with that based on CFD from 0.8<i>Q<sub>d</sub></i> to 1.2<i>Q<sub>d</sub></i>. Small discrepancies are observed in the total efficiencies predicted by 1D model and CFD from 0.8<i>Q<sub>d</sub></i> to 1.0<i>Q<sub>d</sub></i>, while significant discrepancy occurs at larger flow rates.</p>
寄稿の翻訳タイトルOne-dimensional Streamtube Modeling of Contra-rotating Axial Flow Rotors toward Rotational Speed and Stagger Angle Controls
本文言語日本語
ページ(範囲)E22
ジャーナル日本機械学会九州支部講演論文集
2019
0
DOI
出版ステータス出版済み - 2019

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「二重反転形軸流翼車の回転数・食違い角制御のための一次元流管モデルの構築」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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