Dynamic Pressure Fluctuations in Stepped Three-Side Spillway
Publish place: Iranica Journal of Energy and Environment، Vol: 3، Issue: 1
Publish Year: 1390
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_IJEE-3-1_010
تاریخ نمایه سازی: 1 اردیبهشت 1393
Abstract:
One type of outlet works in dams are Three-side spillways that despite of their hydraulic limitations and construction problems, they were being selected, in storage dams, as best option under specifictopographical conditions. Considerable energy losses and great turbulence are hydraulic characteristic of thesespillways. Hydraulic performance with targeting to reduce pressure fluctuations in side channel is an important issue in this type of spillways design. In this study, effect of stepping of three-side spillway’s Ogee profile on the dynamic pressure fluctuation have been investigated using finite volume method and RNG turbulencemodel. The turbulence intensity as a dimensionless number was used for quantitative study of dynamicpressure fluctuations. The results showed that the proposed form of ogee profile caused a significant reduction in turbulence intensity within the side channel. On the other hand, the stepped Ogee profiles of three-side spillways caused to simple construction and ease of operation
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Authors
Hamed Taghizadeh
Department of Hydraulic Structures, Tarbiat Modares Univrsity, P.O. Box: ۱۴۱۵۵-۴۸۳۸, Tehran, Iran
Seyed Ali Akbar Salehi Neyshabour
Department of Civil Engineering Tarbiat Modares Univrsity, P.O. Box: ۱۴۱۵۵-۴۸۳۸, Tehran, Iran
Firouz Ghasemzadeh
Department of Hydraulic Structures, University of Tehran, P.O. Box: ۳۱۵۸۷-۷۷۸۷۱, Karaj, Iran