Study on the volute chamber shape of swirling shaft adopted in water diversion project

3rd International Conference on Energy Engineering and Environmental Protection

能源学;生态环境科学

Li, Yang^1 ; Zhang, Rongbin^2 ; Yang, Lei^1 ; Han, Pengpeng^3 ; Wang, Yisen^1 ; Xu, Chang^1

State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, China^1

Yunnan Institute of Water and Hydropower Engineering Investigation Design and Research, China^2

China Communications Construction Company Second Harbour Engineering Company LTD., China^3

关键词: CFD numerical simulations;    Energy dissipation rate;    Environment friendly;    Internal energy dissipation technology;    Physical model test;    Pressure flow;    Upstream channel;    Water diversion project;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/227/4/042033/pdf
DOI  :  10.1088/1755-1315/227/4/042033

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

As an environment-friendly internal energy dissipation technology, the swirling shaft energy dissipation has been more and more applied. In this paper, the influence of the shape of the volute chamber on the flow pattern and energy dissipation rate is studied by the CFD numerical simulation method combined with the physical model test method. The results show that with the increasing of the diameter of the volute chamber, the diameter of the cavity in the volute chamber increases correspondingly, which effectively alleviates the backwater phenomenon on the upstream channel section of the shaft. Increasing the width of the inlet of the volute chamber can promote the flow pattern of the upstream channel section from the pressure flow to the non-pressure flow. The setting of the arc wedge rectification flip bucket can improve the inlet and inner flow pattern of the volute chamber.