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Development of Freeze Drying Analysis Program using Fixed Grid  

Nam Jin Hyun (Ilshin Lab Co.)
Song Chi Sung (Korea Institute of Machinery and Materials)
Kim Charn-Jung (School of Mechanical and Aerospace Engineering, Seoul National University)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.16, no.10, 2004 , pp. 923-931 More about this Journal
Abstract
A multi-dimensional freeze drying analysis program, which took simultaneous heat and mass transfer, sublimation of ice and motion of sublimation front into full account, was developed using finite volume method with fixed grid. The effect due to the motion of sublimation interface was modeled by an enthalpy formulation streamlined for the freeze drying problems. The efficiency and accuracy of the program was validated by solving one- and two-dimensional freeze drying problems frequently encountered in industrial processes. Finally, the freeze drying processes of cylinder and slab objects with permeable side surfaces were simulated, which demonstrated the capability of the present analysis program in solving multi-dimensional freeze drying problems with complex sublimation interface configurations.
Keywords
Freeze drying; Finite volume method; Fixed grid;
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