Relative capillary conductivity based on Mualem's conductivity model for unimodal or bimodal van Genuchten-Mualem.
Kcap(suc, par.shp, suc.negativ = TRUE, modality = "uni")Suction/pressure heads. Negative if suc.negativ = TRUE
named parameter in list or vector
set TRUE if suction/pressure heads are negative and FALSE if positive
pore size distributions ('uni' or 'bi')
additional for bimodal (modality == 'bi') w2 [-]: weigthing between pore space distribution alfa2 [1/L]: van Genuchten parameter alfa for second pore space distribution n2 [-]: van Genuchten parameter n for second pore space distribution
Peters, A. (2014). Reply to comment by S. Iden and W. Durner on Simple consistent models for water retention and hydraulic conductivity in the complete moisture range. Water Resour. Res. 50, 7535<U+2013>7539.
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Mualem, Y. (1976). A new model for predicting the hydraulic conductivity of unsaturated porous media. Water resources research, 12(3), 513-522.
Schneider, M., & Goss, K. U. (2012). Prediction of the water sorption isotherm in air dry soils. Geoderma, 170, 64-69.