| 鄢煜川,邓 伟,胡 欣.交错有坎台阶式溢洪道消能特性的数值分析[J].江西水利科技,2018,(2):100-105 |
| 交错有坎台阶式溢洪道消能特性的数值分析 |
| The numerical analysis of the energy dissipationcharacteristics of stepped spillway with staggered sill |
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| DOI： |
| 中文关键词: 有坎台阶式 数值模拟 消能率 紊动能 紊动耗散率 |
| 英文关键词: Stepped with sill Numerical analysis Dissipation Turbulent kinetic energy Turbulence dissipation rate |
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| 中文摘要: |
| 在台阶式溢洪道上布置上下交错的消力坎，在台阶面形成较小的消力池，通过增加水流的掺气量，达到改善水流形态，增加消能效果的目的.交错有坎式溢洪道可降低空蚀对台阶面的破坏，能够有效的减缓水流对下游河道的冲刷，达到消能防冲的目的.本文通过对不同体型的有坎台阶式溢洪道进行数值模拟，分析不同工况下的消能率、紊动能与紊动耗散率，得出最优体型，为同类型工程的改扩建提供一定的思路. |
| 英文摘要: |
| Energy dissipation sills which is on the stepped spillway，is on the step surface，a small force pool is formed to increase the amount of air flow，to improve the flow pattern，increasing the elimination effect.The crisscrossed spillway reduces the cavitation damage to the steps，and which it can effectively slow down the erosion of the downstream channel and achieve the goal of elimination.This article through to the different size of stepped spillway numerically simulated，analysis of energy dissipation under different working conditions which including turbulence kinetic energy and turbulence dissipation rate，to get the optimal size and put forward some ideas for similar engineering. |
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