| Experimental Study of the Viscous Pump with a Helical Channel Rotor： Torsion Effect of the Channel |
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| 作者姓名： | Yasutaka HAYAMIZU Kyoji YAMAMOTO Shinichiro YANASE Toru HYAKUTAKE Shinichi MORITA Shigeru OHTSUKA |
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| 作者单位： | Department;Mechanical;Engineering;Yonago;National;College;Technology;4448;Hikona-cho;Yonago-shi;Tottori;683-8502;Graduate;School;Natural;Science;Okayama;University;3-1-1;Tushimanaka;Okayama-shi;700-8530; |
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| 基金项目： | supported by Tottori Prefecture of Japan |
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| 摘 要： | The viscous pump, which has a rotor with a helical square channel, is studied experimentally. The non-dimensional channel curvature is taken to be about 0.1. Three types of torsion of the channel are made to investigate the torsion effect on the flow characteristics. We measure the flux through the channel at a constant rotor speed by changing the pressures at the entrance and exit of the pump. We also observe the secondary flow at a crosssection of the channel. Some of the results obtained are shown as follows： The friction factor along the channel to get the same flux is large for large channel torsion at a constant rotation, and becomes small when the favorable rotation of the rotor to the flow is applied. As for the secondary flow in a cross-section, there appear several types of vortex. When there is no rotation, the secondary flow is almost a symmetric two-vortex type for small flux as is the ordinary Dean vortex, but it changes to a four-vortex type when the flux is large. The secondary flow becomes asymmetric as the rotation is applied. We have unsteady flow patterns at large flux and rotation.
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| 关 键 词： | 螺旋转子 方形通道 螺旋泵 频道 实验 粘性 扭转效应 渠道流量 |
| 收稿时间： | 30 January 2006 |
Experimental study of the viscous pump with a helical channel rotor: Torsion effect of the channel |
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| Yasutaka HAYAMIZU,Kyoji YAMAMOTO,Shinichiro YANASE,Toru HYAKUTAKE,Shinichi MORITA,Shigeru OHTSUKA.Experimental study of the viscous pump with a helical channel rotor: Torsion effect of the channel[J].Journal of Thermal Science,2010,19(2):154-159. |
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| Authors: | Yasutaka Hayamizu Kyoji Yamamoto Shinichiro Yanase Toru Hyakutake Shinichi Morita Shigeru Ohtsuka |
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| Affiliation: | [1]Department of Mechanical Engineering, Yonago National College of Technology, 4448 Hikona-cho, Yonago-shi, Tottori 683-8502, Japan [2]Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tushimanaka, Okayama-shi, Okayama 700-8530, Japan |
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| Abstract: | The viscous pump,which has a rotor with a helical square channel,is studied experimentally.The non-dimen-sional channel curvature is taken to be about 0.1.Three types of torsion of the channel are made to investigate the torsion effect on the flow characteristics.We measure the flux through the channel at a constant rotor speed by changing the pressures at the entrance and exit of the pump.We also observe the secondary flow at a cross-section of the channel.Some of the results obtained are shown as follows:... |
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| Keywords: | Viscous Pump Helical Channel Torsion Effect Secondary Flow Flow Visualization Dean Number Taylor Number |
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