An Improved Model for Predicting Soil Thermal Conductivity from Water Content at Room Temperature

By Sen Lu, T. Ren, Yuan-shi Gong, R. Horton. 2007

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Closed-Form Equation for Thermal Conductivity of Unsaturated Soils at Room Temperature (2015, methodology): “…by Cote & Konrad (2005) Model by Lu et al. (2007) The proposed model 0.0 0.2 0.4 0.6 0.8 1.0 1.2 Soil #17 Model by Cote & Konrad (2005) Model by Lu et al. (2007) The proposed model 0.0 0.2 0.4 0.6 0.8 1.0 Soil #19 Model by Cote & Konrad (2005) Model by Lu et al. (2007) The proposed…”
Critical Review of Thermal Conductivity Models for Unsaturated Soils (2015, methodology): “The 333 relative thermal conductivity relations defined by the models of Johansen (1975), Cote’s 334 (2005) and Lu et al. (2007) use logarithmic, exponential and power functions, 335 respectively, and have a similar trend with the measured data points.”
Thermal Conductivity of Sands under Varying Moisture and Porosity in Drainage–Wetting Cycles (2010, methodology): “Campbell et al. (1994) highlighted that λ increases dramatically with temperature in moist soil, reaching values three to fi ve times the ambient value at 90°C. Bristow (1998) highlighted the need for reliable data on soil mineralogy, demonstrating that substantial error can occur when estimating so”