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Reference: W. M. Rohsenow, H. Y. Choi, Heat, Mass and Momentum Transfer, 2nd Printing,
Prentice-Hall, Inc., Englewood Cliffs, NJ, 1963, pg. 392, article 15.4. Analysis Type(s): Transient Thermal Analysis (ANTYPE = 4) with Analogous Diffusion Variables Element Type(s): 2-D Conduction Bar Elements (LINK32) Input Listing: vm164.dat Test Case
A slab of wood of thickness b originally has a uniform moisture concentration ci (relative to dry wood) when a
drying period begins. The ambient moisture concentration of the drying air is ce. Determine the moisture concentration c at the centerline of the slab after 127 hours. Figure 164.1 Wooden Slab Problem Sketch Material Properties
D = 4 x 10-5 ft2/hr Geometric Properties
b = 2 in = (2/12) ft Loading
ci = 30%
ce = 5% Analysis Assumptions and Modeling Notes
The thermal analysis, which solves the Laplace equation, is used to solve this problem since the diffusion problem
is also governed by the Laplace equation. The following analogy (thermal : diffusion) of input a...
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This note was uploaded on 12/09/2010 for the course DEPARTMENT E301 taught by Professor Kulasinghe during the Spring '09 term at University of Peradeniya.
- Spring '09
- The Land