Finite-element simulation and validation of stepwise drying of bananas

被引:22
|
作者
Ranjan, R
Irudayaraj, J
Reddy, JN
Mujumdar, AS
机构
[1] Penn State Univ, Dept Agr & Biol Engn, University Pk, PA 16802 USA
[2] Appl Geosci & Engn, Reading, PA USA
[3] Texas A&M Univ, Dept Mech & Civil Engn, College Stn, TX USA
[4] Natl Univ Singapore, Dept Mech Engn, Singapore 117548, Singapore
关键词
D O I
10.1080/10407780490453963
中图分类号
O414.1 [热力学];
学科分类号
摘要
A two-dimensional finite-element formulation and solution of a set of transient coupled heat and diffusive moisture transfer equations is presented. The solution procedure developed uses an alpha family of approximation for stepping in time for the solution of the coupled set of equations applied to simulate the stepwise convective drying behavior of banana slices. The model tested was validated with experimental data from different sources for stepwise drying of banana using a heat pump dryer (HPD) as well as continuous batch drying in both Cartesian and cylindrical coordinate systems. The maximum deviation of moisture content between experimental and simulation results was 0.05% wet basis (% w.b.). Good agreement of the simulated results with experimental data for stepwise as well as continuous convective drying of banana samples indicates the validity of the procedure and its incorporation in the optimization of drying processes.
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页码:997 / 1012
页数:16
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