Modelling approaches to predicting thermal conductivity of soils at high temperatures

Three predictive models are tested against soil thermal conductivity data a t high temperatures: two (deV-1 and deV-2) are modifications of the origina l de Vries model, and the third is the Gori model. Model deV-1 results corr elated very closely for 30, 50 and 70 degrees C, and moderately close for 9 0 degrees C. Generally, this model does not require the use of a mass trans fer enhancement factor. The Gori model results correlated well at 30 and 50 degrees C. Model deV-2 results correlate well above field capacity, and pr ovide the best predictions at full dryness. Model deV-1 is recommended for computer modelling of heat and moisture movement in soils at high temperatu res. Copyright (C) 2000 John Wiley & Sons, Ltd.