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.