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A Thermal Wave Approach for Heat Transfer in a Nonuniform Soil
Author(s) -
Karam Mostafa A.
Publication year - 2000
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj2000.6441219x
Subject(s) - heat transfer , thermal , soil thermal properties , mechanics , heat flux , heat flow , soil water , reflection (computer programming) , heat wave , thermal transmittance , materials science , thermal resistance , thermodynamics , soil science , geology , physics , oceanography , climate change , field capacity , computer science , programming language
A novel thermal wave model is developed for studying heat transfer in nonuniform soils. The model, which is based on the wave‐like characteristics of periodic heat flow, discretizes the soil into sublayers. The total thermal reflection and transmission coefficients at the interfaces of those sublayers are formulated and then employed to construct the soil temperature and heat flux profiles from their values at the air–soil interface. Numerical simulations showed that the thermal wave model could predict the predictions of two exact analytic models for the temperature profiles and their derivatives.