The influence of a combined aerator on aeration characteristics
Source abstract
Abstract
Aerators with sharp lateral enlargements and bottom drops generally cause adverse effects in spillway tunnels with a mild base slope, including serious cavity back flow and water wings striking the tunnel roof. Taking RM Hydropower Station’s spillway tunnel as its example, this paper proposes a new type of combined aerator characterized by a “variable base slope” longitudinally and a transverse “sharp enlargement plus straight section.” This not only increases cavity stability, resulting in more effective aeration, but also inhibits the development of water wings, contributing to an improved pattern of water flow. In addition, this paper systematically explores the influence of the flip bucket (drop), gently sloping section, and steeply sloping section of the “variable base slope” aerator upon the aerated cavity and summarizes the rules according to which the sharp lateral enlargement and diffusion angle influence the formation of water wings. This offers technical solutions, with theoretical support, for the design of aerators in spillway tunnels with a mild base slope.
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Research context
OpenAlex topics: Hydraulic flow and structures · Urban Stormwater Management Solutions · Hydrology and Sediment Transport Processes
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Affiliations
Yellow River Conservancy Technical Institute 1 , Kaifeng 475000, China
Changjiang Survey, Planning, Design and Research Co., Ltd. 2 , Wuhan 430014, China
State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University 3 , Chengdu 610065, China
Funding
Henan Province Water Conservancy Science and Technology Research Project · Natural Science Foundation of China · National Key Research and Development Program of China
References (14)
Show source-provided references
1. Research on the myth of aerated facilities with sudden expansion and falling sill
2. Some problems of sudden expansion and falling bucket ventilation facilities
3. Review on research on aeration and erosion reduction facilities of the three gorges project flood discharge deep hole
4. Experimental study on cavity backwater of aerated corrosion reduction facilities
5. Hydraulic characteristics of sudden expansion and sudden drop aerator in small bottom slope spillway tunnel
6. Research progress of aerated corrosion reduction technology and aerated facilities
7. Effect of lateral deflector on lateral and bottom cavity parameters
8. Experimental study on a new type of aerator in spillway with low Froude number and mild slope flow10.1016/s1001-6058(08)60165-1 ↗
9. Study on the backwater problem of low Froude number aerator cavity
10. The application of V-shaped aerator in the long-head spillway tunnel
11. 01 06 2016
12. X. Pengfei , “Research on the new type of aeration and erosion reduction facilities for the pressure outlet connected to the small bottom slope open channel,” Ph.D. thesis (Sichuan University, 2015).
13. Research on flood discharge and energy dissipation of a barrage
14. Research and engineering practice on the shape of sudden expansion drop sill and aerator of high head radial gate