泵站侧向进水前池整流措施数值模拟

Numerical Simulation of Rectification Measures for Side-direction Forebay in Pump Station

为研究侧向进水前池存在的不良流态,基于N-S方程和Realizable k-ε紊流模型,设计了一套侧向进水前池物理模型试验装置,数值模拟了侧向进水前池在改变前池尺寸和设置隔墩整流措施的流态。CFD计算结果表明,原方案下侧向进水前池1号,2号机组水流出现明显回流,只有3号机组可以平稳进入。经过整流之后,可以实现3台机组全部平稳进入水流,而改变前池尺寸对整流并无明显效果。研究成果对改善侧向进水前池流态具有参考价值和重要意义。

In order to study the bad flow pattern of the side-direction forebay,the physical model test device for side-direction forebay is designed and the flow patterns at the change of pool size or with a sill is simulated based on the N-S equation,realizable k-epsilon turbulence model.It was shown that the flow of 1# and 2# units in the side-direction forebay in the original plan appears obvious recirculation and only 3# unit can smoothly entry.After the rectification,the all 3units smoothly enter the water flow can be achieved,but there is no obvious effect on the rectification by the change of the front pool size.These outcomes could be useful for the research of improving the flow patterns of side-direction forebay,but also has actual meaning.