| 程永光,杨建东.用三维计算流体力学方法计算调压室阻抗系数[J].水利学报,2005,36(7):0787-0792 |
| 用三维计算流体力学方法计算调压室阻抗系数 |
| Hydraulic resistance coefficient determination of throttled surge tanks by means of computational fluid dynamics |
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| DOI： |
| 中文关键词: 计算流体力学 水电站调压室 阻抗系数 |
| 英文关键词: hydraulic resistance coefficient throttled surge tank computational fluid dynamics realizable k-ε turbulence model |
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| 中文摘要: |
| 为了研究计算流体动力学方法确定阻抗式调压井阻抗系数的可行性，本文选用适合调压室流动的可行化k-ε湍流模型及考虑边壁粗糙度的壁函数，用二阶精度算法对T形岔管、管内孔口、突扩管和阻抗式调压室的流场进行了数值模拟。经比较发现采用计算流体动力学方法计算所得的结果在水头损失方面可达到与常规模型试验结果同等的精度，表明计算流体动力学可以应用于调压室的设计计算中。 |
| 英文摘要: |
| The realizable k-ε model for turbulent flow is applied to numerically simulate the flow fields in T-type bifurcation, sudden expansion, orifice within a pipe and throttled surge tanks. The logarithmic law wall function is adopted to deal with the boundary layer. It is found that the accuracy of the calculated hydraulic resistance coefficient of throttled surge tank is the same as the model test result. As an example, the calculation for the surge tank in tail water tunnel of a pumped storage power station is presented. |
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