Hydropower stations play an important role in discharging the flood. Especially in wet seasons, the river water always contains several percentages of sediment, and the velocity of the water flowing through the flood discharging tunnel is very high. Arranging some energy dissipation orifice plates in the flood discharging tunnel, cannot only reduce the pressure and flow velocity, but also deposit sediment and reduce the sediment content. However, fouling on energy dissipation orifice plates can initiate material corrosion of perforated plates, even weaken the energy dissipation performance. In this paper, the fouling performance on energy dissipation orifice plates with sediment contained water flow is investigated. To begin with, the pressure along the path is used to compare with a reported experiment to verify the reliability of the numerical method. Then, effects of the solid particle diameter, the sediment volume concentration and the inlet flow velocity on the particle distribution are observed. The results show that with the increase of the Reynolds number, the sediment volume fraction and the sediment particle diameter, more sediments accumulate at both surfaces of the orifice plate. The Reynolds number and the sediment volume fraction affect the upstream surface more significantly, while the effect of sediment particle diameter is more notable on the downstream surface. Additionally, the energy dissipation coefficient of the orifice plate is mainly dominated by the Reynolds number. This work is of significance for further analysis of fouling problems in energy dissipation orifice plates or similar fluid machinery.
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ASME 2018 5th Joint US-European Fluids Engineering Division Summer Meeting
July 15–20, 2018
Montreal, Quebec, Canada
Conference Sponsors:
- Fluids Engineering Division
ISBN:
978-0-7918-5156-2
PROCEEDINGS PAPER
Fouling Analysis on Energy Dissipation Orifice Plates With Sediment Contained Water Flow
Jin-yuan Qian,
Jin-yuan Qian
Zhejiang University, Hangzhou, China
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Min-rui Chen,
Min-rui Chen
Zhejiang University, Hangzhou, China
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Zhi-xin Gao,
Zhi-xin Gao
Zhejiang University, Hangzhou, China
Search for other works by this author on:
Zhi-jiang Jin
Zhi-jiang Jin
Zhejiang University, Hangzhou, China
Search for other works by this author on:
Jin-yuan Qian
Zhejiang University, Hangzhou, China
Min-rui Chen
Zhejiang University, Hangzhou, China
Zhi-xin Gao
Zhejiang University, Hangzhou, China
Zhi-jiang Jin
Zhejiang University, Hangzhou, China
Paper No:
FEDSM2018-83159, V002T11A005; 7 pages
Published Online:
October 24, 2018
Citation
Qian, J, Chen, M, Gao, Z, & Jin, Z. "Fouling Analysis on Energy Dissipation Orifice Plates With Sediment Contained Water Flow." Proceedings of the ASME 2018 5th Joint US-European Fluids Engineering Division Summer Meeting. Volume 2: Development and Applications in Computational Fluid Dynamics; Industrial and Environmental Applications of Fluid Mechanics; Fluid Measurement and Instrumentation; Cavitation and Phase Change. Montreal, Quebec, Canada. July 15–20, 2018. V002T11A005. ASME. https://doi.org/10.1115/FEDSM2018-83159
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