Finite element prediction of transient temperature distribution in a grainstorage bin

A two-dimensional non-linear heat transfer model is presented to describe t he transient temperature distribution in a cylindrical grain bin. In this m odel, the effects on grain temperatures of solar radiation, ambient air tem perature and convection were simulated and complicated mixed boundary condi tions on the grain surface and around the bin wall were considered during t he simulation. The model was verified by experiments conducted in a weather ed galvanized steel bin storing rice and was used to analyse the temperatur e distribution in the bin. The results show that the predicted temperatures agreed well with the measured ones. This study can be used as a tool for t he optimum design of storage bins. (C) 2000 Silsoe Research Institute.