Table 3 The parameters used for simulation Case 2
From: Holistic multiphysics simulation of climatic responses of cold region pavements
Symbol | value (unit) | Description |
|---|---|---|
\({\mathrm{K}}_{\mathrm{s}1}\) | 1.3e-3[m/s] | Saturated hydraulic conductivity of base |
\({\mathrm{K}}_{\mathrm{s}2}\) | 1e-6[m/s] | Saturated hydraulic conductivity of subgrade |
\({\uptheta }_{\mathrm{s}1}\) | 0.27 | Saturated volumetric water content of base |
\({\uptheta }_{\mathrm{s}2}\) | 0.43 | Saturated volumetric water content of subgrade |
\({\uptheta }_{\mathrm{r}1}\) | 0.08 | Residual volumetric water content of base |
\({\uptheta }_{\mathrm{r}2}\) | 0.06 | Residual volumetric water content of subgrade |
\({\alpha }_{1}\) | 0.028 | Van Genuchten model coefficient of base |
\({\alpha }_{2}\) | 0.020 | Van Genuchten model coefficient of subgrade |
\({l}_{1}\) | 1 | Van Genuchten model coefficient of base |
\({l}_{2}\) | 1 | Van Genuchten model coefficient of subgrade |
\({m}_{1}\) | 0.614 | Van Genuchten model coefficient of base |
\({m}_{2}\) | 0.137 | Van Genuchten model coefficient of subgrade |
\({n}_{1}\) | 2.587 | Van Genuchten model coefficient of base |
\({n}_{2}\) | 1.196 | Van Genuchten model coefficient of subgrade |
\({\Omega }_{1}\) | 2 | Van Genuchten model coefficient of base |
\({\Omega }_{2}\) | 0.5 | Van Genuchten model coefficient of subgrade |
\({b}_{1}\) | 0.6 | Ice content coefficient of base |
\({b}_{2}\) | 0.5 | Ice content coefficient of subgrade |
\({\mathrm{C}}_{\mathrm{pp}}\) | 2.314e6[J/(m^3*K)] | Heat capacity of pavement surface material |
\({\uplambda }_{\mathrm{p}}\) | 1.1[W/(m*K)] | Heat conductivity of pavement surface material |
albedo | 0.22 | Solar reflectivity |
\(\epsilon\) | 0.95 | Emission coefficient of pavement surface material |
\({\epsilon }_{a}\) | 0.95 | Absorption coefficient of pavement surface material |