| Numerical and Experimental Modelling of Gas Flow and Heat Transfer in the Air Gap of an Electric Machine |
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| 引用本文： | Maunu KUOSA,Petri SALLINEN,Jaakko LARJOLA. Numerical and Experimental Modelling of Gas Flow and Heat Transfer in the Air Gap of an Electric Machine[J]. 热科学学报(英文版), 2004, 13(3): 264-278. DOI: 10.1007/s11630-004-0041-4 |
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| 作者姓名： | Maunu KUOSA Petri SALLINEN Jaakko LARJOLA |
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| 作者单位： | Lappeenranta University of Technology (LUT)，Department of Energy and Environmental Technology，P.O. Box 20，53851 Lappeenranta，Finland，Lappeenranta University of Technology (LUT)，Department of Energy and Environmental Technology，P.O. Box 20，53851 Lappeenranta，Finland，Lappeenranta University of Technology (LUT)，Department of Energy and Environmental Technology，P.O. Box 20，53851 Lappeenranta，Finland |
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| 摘 要： | This work deals with the cooling of high-speed electric machines, such as motors and generators, through an air gap. It consists of numerical and experimental modeling of gas flow and heat transfer in an annular channel. Velocity and temperature profiles are modeled in the air gap of a high-speed test machine. Friction and heat transfer coefficients are presented in a large velocity range. The goals are reached acceptably using numerical and experimental research. The velocity field by the numerical method does not match in every respect the estimated flow mode. The absence of secondary Taylor vortices is evident when using time averaged numerical simulation.
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| 收稿时间： | 2006-09-18 |
Numerical and experimental modelling of gas flow and heat transfer in the air gap of an electric machine |
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| Maunu Kuosa,Petri Sallinen,Jaakko Larjola. Numerical and experimental modelling of gas flow and heat transfer in the air gap of an electric machine[J]. Journal of Thermal Science, 2004, 13(3): 264-278. DOI: 10.1007/s11630-004-0041-4 |
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| Authors: | Maunu Kuosa Petri Sallinen Jaakko Larjola |
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| Abstract: | This work deals with the cooling of high-speed electric machines, such as motors and generators, through an air gap. It consists of numerical and experimental modeling of gas flow and heat transfer in an annular channel. Velocity and temperature profiles are modeled in the air gap of a high-speed test machine. Friction and heat transfer coefficients are presented in a large velocity range. The goals are reached acceptably using numerical and experimental research. The velocity field by the numerical method does not match in every respect the estimated flow mode. The absence of secondary Taylor vortices is evident when using time averaged numerical simulation. |
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| Keywords: | heat transfer electric machine air gap friction coefficient CFD. |
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