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Numerical analysis of convective drying of a moist object with combined internal and external heat and mass transfer

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Abstract

A numerical approach is developed for computing convective drying of a moist object. The conservation equations of mass, momentum, energy and moisture in the internal and external regions of an object are solved with the coupled heat and mass transfer conditions on the object surface, including the effect of evaporation. A numerical approach is applied to predict the internal and external temperature and moisture distributions during the convective drying with variations in the initial moisture content and the water activity. The numerical results show that the water activity is an important parameter for determining the drying rate pattern and the analogy between the heat and mass transfer on the object surface.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Sogang University, Seoul, 121-742, Korea

    Donghyun Kim & Gihun Son

  2. Energy Efficiency Research Division, Korea Institute of Energy Research, Daejeon, 305-343, Korea

    Sungil Kim

Authors
  1. Donghyun Kim
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  2. Gihun Son
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  3. Sungil Kim
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Corresponding author

Correspondence to Gihun Son.

Additional information

Recommended by Associate Editor Shin Hyung Rhee

Donghyun Kim received his B.S. in Mechanical Engineering from Sogang University in 2015. He is currently a graduate student in Mechanical Engineering at Sogang University in Seoul, Korea. Mr. Kim’s research interests are in the area of Heat and mass transfer and Multiphase dynamics.

Gihun Son received his B.S. and M.S. in Mechanical Engineering from Seoul National University in 1986 and 1988, respectively, and his Ph.D. in Mechanical Engineering from UCLA in 1996. Dr. Son is currently a professor of Mechanical Engineering at Sogang University in Seoul, Korea. His research interests are in the areas of multiphase dynamics, heat transfer and power system simulation.

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Kim, D., Son, G. & Kim, S. Numerical analysis of convective drying of a moist object with combined internal and external heat and mass transfer. J Mech Sci Technol 30, 733–740 (2016). https://doi.org/10.1007/s12206-016-0128-3

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  • DOI: https://doi.org/10.1007/s12206-016-0128-3

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