Numerical flow analysis of the GAMM Turbine at nominal and off-design operating conditions

被引：0
|
作者：
Gros, L [1 ]
Kueny, JL [1 ]
Avellan, F [1 ]
Bellet, L [1 ]
机构：
[1] Ecole Polytech Fed Lausanne, IMHEF, CH-1007 Lausanne, Switzerland
来源：
PROCEEDINGS OF THE XIX IAHR SYMPOSIUM ON HYDRAULIC MACHINERY AND CAVITATION, VOLS 1 AND 2 | 1998年
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D O I：
暂无
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The flow in a Francis turbine runner (GAMM Turbine) is analysed numerically. Different operating points are calculated using two industrial software packages based respectively on a finite element method (N3S) and a finite volume method (TASCflow(R)) and compared to experimental results. The numerical results allow to observe physical phenomena in the runner that are important in the process of hydraulic turbomachinery design. Values of C-u and C-m velocity components, blade pressure distribution and recirculation in the how are compared to experimental results at nominal and off-design how conditions. The experimental and numerical results show a similar efficiency evolution in function of flow rate and head, however the absolute level of energetic losses are overestimated by the two numerical cedes.
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页码：121 / 128
页数：8
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