Characteristics analysis for different water heads on the efficiency hill chart of Francis turbine

[摘要] Based on the test results of Francis turbine, the causes and inevitability of various hydraulic phenomena in the model combined characteristic curve for typical water heads were analyzed in this paper. the difference of the model combined characteristic curve from the low water head to the high water head is compared, and the characteristics and commonness of the model combined characteristic curve about different water head are summarized. Further, hydraulic performance and geometric features of Francis turbine are revealed by particularly analyzing model combined characteristic curves, and to provide powerful theoretical basis and definite modification direction for the hydraulic design of hydraulic turbine.

[发布机构] State Key Laboratory Base of Eco-hydraulic Engineering in Arid Area, Xi'An University of Technology, Xi'an, Shaanxi Province; 710048, China^1;Dongfang Electric Machinery Co., Ltd., Sichuan Province, Deyang; 618000, China^2

[效力级别] 工业技术 [学科分类] 工业工程学

[关键词] Analyzing models;Characteristic curve;Characteristics analysis;Geometric feature;High water;Hydraulic designs;Hydraulic performance;Water heads