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Development of Computer Simulation Software for Single Grain Kernel Drying, Tempering and Stress Analysis

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  Paper number  013010,  2001 ASAE Annual Meeting. (doi: 10.13031/2013.7408) @2001
Authors:   Canchun Jia, Wade Yang, Terry J. Siebenmorgen, Auke G. Cnossen
Keywords:   Computer simulation, Drying, Thin Layer, Tempering, Stress, Grain, Single Kernel

The quality traits of a single grain kernel can give index to the overall quality of a grain bulk, because it is individual kernels that comprise a grain bulk. Therefore, the single- kernel drying behavior is important to understand the overall quality of grain. A Matlab and Visual C++ based software package was developed in this study for describing single-kernel drying, tempering and internal stress analysis. Non-linear and transient partial differential heat and mass transfer equations describing the single kernel drying and tempering processes were solved using the finite element method. Temperature- and moisture-dependent viscoelastic properties were applied to the stress analysis of a single rice kernel. A graphical user interface, and 2D/3D graphics for temperature, moisture content and stress changes were developed. The simulation results were validated by thin-layer drying data and subsequent tempering experiments of rough rice. This simulation tool can be used for predicting temperature, moisture content and internal stress distribution in a single kernel.

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