Free Surface Influence on Low Head Hydro Power Generation

28th IAHR symposium on Hydraulic Machinery and Systems

Pelz, Peter F.^1 ; Froehlich, Thibaud^1

Department of Fluid Systems, Technische Universität Darmstadt, Otto-Berndt-Strafie 2, Darmstadt

64287, Germany^1

关键词: Available power;    Energy equation;    Free surfaces;    Hydro-power generation;    Low head;    Power extraction;    Shock loss;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/49/10/102005/pdf
DOI  :  10.1088/1755-1315/49/10/102005

来源: IOP

【 摘 要 】

The free surface influence on the power extraction of turbines in open-channel flow is analyzed under use of continuity, momentum and energy equations. The approach differs of previous models by avoiding two drawbacks: the exceeding of the available power with the Betz definition and the inaccurate assumption of an undisturbed approaching flow. The result is an energetic optimization focusing on the energy dissipation due to wake and shock losses downstream of the turbine.