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Volume 1,     Number 3,     Summer 1993

 

A NUMERICAL STUDY OF
A GRAIN COOLING MODEL
J. JAMES WANG AND M.J. MIKETINAC

Abstract. Heat and moisture transfer models have been applied by several researchers to the problem of simulating (and manipulating) the micro-climates of grain bulks in an effort to limit insect reproduction. In this paper a previously published model is rebuilt, resulting in a nonlinear hyperbolic system of conservation laws, and then solved numerically. In the numerical work on this model, severe computational difficulties, which mainly come from discontinuities on the boundary, and complicated flux functions are treated in terms of several high resolution schemes as well as a new scheme. A comparison of these schemes based on their numerical performance shows that the new scheme is the most successful in handling spurious oscillations. Computed results are in good agreement with experimental measurements.

 

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