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Numerical simulation of energy dissipation of vortex flow in flood discharging tunnel with barrage
Pages: 78-84
Year: Issue:  1
Journal: Hydro-Science and Engineering

Keyword:  vortex flow dissipation with barrageRNG κ-ε modelrate of energy dissipationcavitation number;
Abstract: 运用标准κ-ε模型、RNGκ-ε模型、Realizable κ-ε模型、标准κ-ω模型,并结合VOF法对公伯峡水电站右岸泄洪洞的水流进行数值模拟,利用原型观测资料对计算结果进行对比验证,结果表明RNGκ-ε模型的模拟结果与原型观测资料最为接近.在此基础上,把原泄洪洞的旋流洞及其后段简化为直洞并在直洞不同位置布置阻塞,然后应用RNGκ-ε模型对其内部水流进行数值模拟,通过比较消能率、沿程压力及流场空化数分布,得出阻塞最佳布置位置,并给出最佳位置下水流的湍流特性.
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