Preprint Article Version 1 This version not peer reviewed

Flow Field and Energy Dissipation of Stepped Spillways with Different Horizontal Face Angles

Version 1 : Received: 7 September 2017 / Approved: 8 September 2017 / Online: 8 September 2017 (10:25:35 CEST)

How to cite: Bai, Z.; Zhou, M.; Wang, Y.; Wang, W. Flow Field and Energy Dissipation of Stepped Spillways with Different Horizontal Face Angles. Preprints 2017, 2017090029 (doi: 10.20944/preprints201709.0029.v1). Bai, Z.; Zhou, M.; Wang, Y.; Wang, W. Flow Field and Energy Dissipation of Stepped Spillways with Different Horizontal Face Angles. Preprints 2017, 2017090029 (doi: 10.20944/preprints201709.0029.v1).

Abstract

Energy dissipation is one of the most important factors in choosing stepped spillways. However, few studies are about energy dissipation with different horizontal face angles. In this paper, the realizable k-ε turbulence model was used to study the flow field and energy dissipation rates of different stepped spillways with five horizontal face angles in the skimming flow regions. It shows that the free water surfaces and energy dissipation rates change with horizontal face angles and the energy dissipation rates initially decrease and then increase as the horizontal face angle increases. And the horizontal face angles cause the great changes of flow field.

Subject Areas

numerical simulation; horizontal face angle; energy dissipation rates; stepped spillway

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