Dethridge wheel for pico-scale hydropower generation: An experimental and numerical study

28th IAHR symposium on Hydraulic Machinery and Systems

Paudel, Shakun^1 ; Saenger, Nicole^1

Department of Hydraulic Engineering, Faculty of Civil Engineering, Darmstadt University of Applied Sciences, Haardtring 100, Darmstadt

64295, Germany^1

关键词: Computational Fluid Dynamics codes;    Experimental and numerical studies;    Experimental approaches;    Flow metering;    Hydro-power generation;    Physical model;    Three-dimensional numerical modeling;    University of applied science;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/49/10/102007/pdf
DOI  :  10.1088/1755-1315/49/10/102007

来源: IOP

【 摘 要 】

This study aims to assess the potential of the Dethridge wheel for developing power from very low head sites in open channel flow. The Dethridge wheel has been in use since early 20thcentury for measuring flow in irrigation canals. Being robust and simple in design, this technology served as a reliable flow metering solution for more than a century. Working in a similar principle to the conventional waterwheel, this wheel could be a viable option of power generation for decentralized application in remote areas. Two different methods, experimental and numerical, are used for investigating the potential of the wheel. An experimental approach in which a physical model of the Dethridge wheel is built and tested at the hydraulics laboratory of Darmstadt University of Applied Sciences. Whereas a three dimensional numerical model of the Dethridge wheel is simulated using a commercial Computational Fluid Dynamics (CFD) code Flow-3D. Efficiency of around 60% is achieved in the model tests. Computed results are also in good agreement with the physical model results. The results from the physical and the numerical model are presented in this paper.