대한기계학회논문집B (Transactions of the Korean Society of Mechanical Engineers B)

  • 제29권1호
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  • Pages.131-138
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  • 2005
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  • 1226-4881(pISSN)
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  • 2288-5324(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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마이크로 채널 내 액체에서의 열삼투현상에 대한 이론 및 시뮬레이션 연구

Theoretical and Simulation Study of Thermo-Osmosis of Liquid in Microchannel

  • 한민섭 (서울대학교 마이크로열시스템센터)
  • 발행 : 2005.01.01
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초록

Thermo-osmosis of liquids in a microscale channel is investigated by theoretical and simulation study. From the basic set of conservation equations, the temperature and velocity distributions are derived in the function of the given temperatures and pressure gradient. The pressure gradient for a given temperature gradient is then obtained by the molecular simulation. It is shown that the temperature gradient tangential to the surface induces the pressure gradient and thus the flow in the interfacial region between the liquid and channel surface. The thermo-osmotic flow is proportional to the applied temperature gradient, and the factor of proportionality depends on temperature and intermolecular potential. The origin and characteristics of the phenomenon are discussed in molecular details.

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참고문헌

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