Taylor-Couette-Poiseuille flow and heat transfer in an annular channel with a slotted rotor
Taylor-Couette-Poiseuille flow and heat transfer in an annular channel with a slotted rotor
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DOI：
10.1016/j.ijthermalsci.2016.09.022
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发表时间：
2017-02
影响因子：
4.5
通讯作者：
N. Lancial;F. Torriano;F. Beaubert;S. Harmand;G. Rolland
中科院分区：
文献类型：
--
作者：
N. Lancial;F. Torriano;F. Beaubert;S. Harmand;G. Rolland
本文研究了凸极水轮发电机开槽旋转内筒环形通道内的Taylor-Couette-Poiffille流动。本研究的目的是提高电机中的流动和热现象的理解，使用一个简化的比例模型。数值模型的验证，一个特定的配置首先显示通过比较结果与实验数据。还进行了参数研究，以调查所有主流态，并推导出转子极面和侧面上努塞尔数分布的相关性。结果表明，在极面和感应面后缘，Nusselt数与切向雷诺数的1/7次方成正比。这种关系类似于两个同心光滑圆柱体之间的经典Taylor-Couette-Poiffuille流动中遇到的关系。
This paper investigates a Taylor-Couette-Poiseuille flow in an annular channel of a slotted rotating inner cylinder, corresponding to a salient pole hydrogenerator. The purpose of this study is to improve the understanding of flow and thermal phenomena in electrical machines using a simplified scale model. The validation of the numerical model for a specific configuration is first shown by comparing the results with the experimental data. A parametric study is also performed to investigate all main flow regimes and to derive correlations in terms of the Nusselt number distribution on the rotor pole face and sides. The results show that the Nusselt number is proportional to the tangential Reynolds number to the power 1/7 in the pole and inductive faces trailing side. This relationship is similar to the one encountered in classical Taylor-Couette-Poiseuille flows between two concentric and smooth cylinders.