摘要
用能量法确定水轮机临界空化系数，并不是空化初生点，此时，空化多已严重发生，该临界值不能反映转轮的空化性能．它只能作为判别转轮能量性能的重要依据．水轮机最优工况区与偏离最优工况的空化特性差异较大．空化临界判别标准参量和界线，目前尚无明确规定．建议综合分析效率、单位流量、单位出力三者中最先发生变化者作为判别临界空化系数的基准．
In this paper, the authors point out that there are two problems in the determina-tion of critical cavitation cofficient, using energy method and make a discussion on the problemsencountered during cavitation and power test for hydraulic turbine with low unit speed and highunit speed, in large flow, and suggest methods for improvement.
出处
《水利水电技术》
CSCD
北大核心
1996年第4期29-32,共4页
Water Resources and Hydropower Engineering
关键词
水轮机
空化模型
能量试验
Cavitation test, Power test, Cavitation Coefficent
