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首页> 外文会议>Congress of the International Association for Hydraulics Research;Biennial congress of the International Association for Hydraulics Research >EXPERIMENTAL AND NUMERICAL STUDY OF THE FLOW THROUGH A TRIFURCATION
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EXPERIMENTAL AND NUMERICAL STUDY OF THE FLOW THROUGH A TRIFURCATION

机译：支流流动的实验与数值研究

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A study of the flow through a trifurcation has been performed experimentally andnumerically. For the experiments a plexiglas trifurcation was used. The pressurehead were measured for several discharges in the three branches. The computationswere carried out on a quarter of the real domain since the boundary conditions aswell as the geometry were symmetric. It is demonstrated that the mean-flowparameters are predicted well by the k-e turbulence model. More advancedturbulence model, namely Reynolds stress model has been used as acomplementary model to describe the flow more accurately. The calculations wereassessed for available measurements and later extended to higher discharges, forwhich experiments could not be done because of incipient cavitation in the model.The agreement of the calculated and measured pressure drop is relatively good andhelps to transfer test results from the model to the prototype.
机译：通过分叉的流动的研究已经通过实验和数值方式进行。对于实验，使用有机玻璃三叉。测量压头在三个分支中的几次排放。由于边界条件以及几何形状都是对称的，因此计算是在四分之一的实际域上进行的。结果表明，利用k-e湍流模型可以很好地预测平均流量参数。更高级的湍流模型，即雷诺应力模型已被用作补充模型，以更精确地描述流动。对计算进行了评估以进行可用的测量，然后扩展到更高的排放量，由于模型中出现了空化现象，因此无法进行实验。计算和测量的压降的一致性相对较好，有助于将测试结果从模型转移到原型。

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