Journal of Mechanical Science and Technology

The Korean Society of Mechanical Engineers (대한기계학회)
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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)
  • Published : 2005.02.01
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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

References

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