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首页> 外文期刊>Journal of Heat Transfer >Convective Heat Transfer in a Rotor Stator System Air Gap With Multiple Suctions of Fluid Through the Stator
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Convective Heat Transfer in a Rotor Stator System Air Gap With Multiple Suctions of Fluid Through the Stator

机译：转子定子系统气隙中的对流传热，流体通过定子多吸

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摘要

The experimental work presented in this paper relates to the local convective heat transfer on the rotor surface in the airgap of a discoidal rotor stator system. The stator used in these experiments is a multiperforated disk in which an air suction due to the rotation of the rotor comes through and enters the airgap. A thermal balance equation was used to identify the local convective heat transfer coefficient, with temperatures as boundary conditions, which have been measured by infrared thermography. The influence of the suctions is discussed for an interdisk dimensionless spacing interval G ranging from 0.01 to 0.16 and for Re between 129,000 and 516,000. Results are compared with precedent studies in which we obtained Nusselt numbers with a closed rotor stator system in which stator is a full disk and a rotor stator system with one hole at the stator center. It is shown that multiperforated stator can or cannot improve the rotor cooling, depending on G and Re.
机译：本文提出的实验工作涉及盘状转子定子系统气隙中转子表面的局部对流传热。在这些实验中使用的定子是多孔板，其中由于转子旋转而产生的吸气进入并进入气隙。使用热平衡方程来确定局部对流传热系数，以温度为边界条件，已通过红外热成像法对其进行了测量。对于盘间无量纲间隔G介于0.01到0.16之间以及Re介于129,000和516,000之间，讨论了吸力的影响。将结果与先验研究进行比较，在先验研究中，我们获得了密闭转子定子系统的Nusselt数，该系统中定子是一个完整的圆盘，而转子定子系统的定子中心处有一个孔。结果表明，取决于G和Re，多孔定子可以或不能改善转子的冷却。

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