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Heat Transfer in a Micro-actuator Operated by Radiometric Phenomena  

Heo Joong-Sik (Institute of Advanced Machinery and Technology, Sungkyunkwan University)
Hwang Young-Kyu (School of Mechanical Engineering, Sungkyunkwan University)
Publication Information
Journal of Mechanical Science and Technology / v.19, no.2, 2005 , pp. 664-673 More about this Journal
Abstract
The heat transfer characteristics of rarefied flows in a micro-actuator are studied numerically. The effect of Knudsen number (Kn) on the heat transfer of the micro-actuator flows is also examined. The Kn based on gas density and characteristic dimension is varied from near-continuum to highly rarefied conditions. Direct simulation Monte Carlo calculations have been performed to estimate the performance of the micro-actuator. The results show that the magnitude of the temperature jump at the wall increases with Kn. Also, the heat transfer to the isothermal wall is found to increase significantly with Kn.
Keywords
Micro-Actuator; Radiometric Phenomena; DSMC Method; Rarefied Gas Flow Field; Knudsen Number;
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Times Cited By Web Of Science : 1  (Related Records In Web of Science)
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