Evaporation and Condensation Coefficients of Methanol at Room Temperature, and Consideration of Kinetic Boundary Condition

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  • Kobayashi Kazumichi
    Division of Mechanical and Space Engineering, Faculty of Engineering, Hokkaido University
  • Mouri Shingo
    Division of Mechanical and Space Engineering, Faculty of Engineering, Hokkaido University
  • Watanabe Yusuke
    Division of Mechanical and Space Engineering, Faculty of Engineering, Hokkaido University
  • Watanabe Masao
    Division of Mechanical and Space Engineering, Faculty of Engineering, Hokkaido University
  • Fujikawa Shigeo
    Division of Mechanical and Space Engineering, Faculty of Engineering, Hokkaido University

Bibliographic Information

Other Title
  • 常温でのメタノールの蒸発係数と凝縮係数及び気体論境界条件の検討
  • ジョウオン デ ノ メタノール ノ ジョウハツ ケイスウ ト ギョウシュク ケイスウ オヨビ キタイロン キョウカイ ジョウケン ノ ケントウ

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Description

The growth rate of a liquid film formed on a shock-tube endwall due to condensation of methanol vapor behind a shock wave reflected at the endwall is measured by an optical interferometer at room temperature, and it is analyzed with the aid of molecular gas dynamics in order to deduce evaporation and condensation coefficients. The measurements are done in the region of 1 ≤σ / ρ*<1.3, where σ / ρ* is nonequilibrium degree. The condensation coefficient is almost the same value as the evaporation coefficient (=0.86) in 1 ≤σ / ρ* <1.05 and decreases to the smaller values than the evaporation coefficient in σ / ρ*<tt>＞</tt>1.05, and the kinetic boundary condition is valid in 1 ≤σ / ρ*<1.05.

Journal

  • Netsu Bussei

    Netsu Bussei 27 (1), 9-14, 2014

    JAPAN SOCIETY OF THERMOPHYSICAL PROPERTIES

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