TY  - JOUR
T1  - A Formulation for Scanning Soil-water Characteristic Curves
TT  - A Formulation for Scanning Soil-water Characteristic Curves
AU  - Kenanoğlu, Melih Birhan
AU  - Toker, Nabi Kartal
PY  - 2018
DA  - December
DO  - 10.2339/politeknik.389619
JF  - Politeknik Dergisi
PB  - Gazi University
WT  - DergiPark
SN  - 2147-9429
SP  - 901
EP  - 906
VL  - 21
IS  - 4
LA  - en
AB  - The hysteretic nature ofsoil water characteristic curve (SWCC) is captured assuming the virgin dryingand virgin wetting (a.k.a. imbibition) curves; which can be obtained fromexperiments or various fitting equations in the literature, bound all possiblevalues during transition from one regime to the other. The scanning curves(transitions between virgin wetting and drying SWCC) are modelled by usinggeometry-based relations, which are devised by means of the observations on theshapes of graphs of experimental data found in the literature. The proposedrelations can be used in incremental form to predict suction in differentframeworks (e.g. infiltration, evaporation) and related physical problems. Anempirical equation is proposed for power parameter (K), which is introduced in the relations. Only virgin wetting andvirgin drying SWCCs and regime reversal point suffice to model a scanning curvein the developed formulations.
KW  - Soil-water characteristic curve
KW  - retention curve
KW  - scanning curve
KW  - hysteresis
N2  - The hysteretic nature ofsoil water characteristic curve (SWCC) is captured assuming the virgin dryingand virgin wetting (a.k.a. imbibition) curves; which can be obtained fromexperiments or various fitting equations in the literature, bound all possiblevalues during transition from one regime to the other. The scanning curves(transitions between virgin wetting and drying SWCC) are modelled by usinggeometry-based relations, which are devised by means of the observations on theshapes of graphs of experimental data found in the literature. The proposedrelations can be used in incremental form to predict suction in differentframeworks (e.g. infiltration, evaporation) and related physical problems. Anempirical equation is proposed for power parameter (K), which is introduced in the relations. Only virgin wetting andvirgin drying SWCCs and regime reversal point suffice to model a scanning curvein the developed formulations.
CR  - [1] Miller, G.A., Khoury, C.N., Muraleetharan, K.K., Liu, C., and Kibbey, T.C.G. "Effects of soil skeleton deformations on hysteretic soil water  characteristic curves: Experiments and simulations". Water Res. Res. 44,  W00C06, (2008).
CR  - [2] Lins, Y., Zou, Y., and Schanz, T. "Physical modelling of SWCC for granular  materials". Theoretical and numerical unsaturated soil mechanics, Weimar,  Germany, 61-74, (2007).
CR  - [3] Hammervold, W.L., Knutsen, Ø., Iversen, J.E., and Skjæveland, S.M. "Capillary pressure scanning curves by the micropore membrane  technique". Journal of Petroleum Science and Engineering 20: 253-258, (1998).
CR  - [4] Viane, P., Vereecken, H., Diels, J., and Feyen, J. "A statistical analysis of six  hysteresis models for the moisture retention characteristic". Soil Sci. 157: 345-355, (1994).
CR  - [5] Watson, K.K., Reginato, R.J., Jackson, R.D. "Soil water hysteresis in a field  soil". Soil Sci. Soc. America J. 157: 345-355, (1975).
CR  - [6] Topp, G.C. "Soil water hysteresis in silt loam and clay loam soils". Water  Res. Res. 7: 914-920, (1971).
CR  - [7] Li, X.S. "Modelling of hysteresis response for arbitrary wetting/drying paths".  Computers and Geotechnics, 32(2):  133-137, (2005).
CR  - [8] Pedroso, D.M., and Williams, D.J. "A novel approach for modelling soil- water characteristic curves with hysteresis". Computers and Geotechnics,  37(3): 374-380, (2010).
CR  - [9] Van Genuchten, M.T. "A closed-form equation for predicting the hydraulic  conductivity of unsaturated soils", Soil Sci. Soc. Am. J. 44: 892-898 ,(1980).
CR  - [10] Lins, Y., Zou, Y., and Schanz, T. "Physical modelling of SWCC for granular  materials". Theoretical and numerical unsaturated soil mechanics, Weimar,  Germany, 61-74, (2007).
CR  - [11] Talsma, T.  "Hysteresis in two sands and the independent domain model".  Water Resources Research 6(3): 964-970, (1970).
CR  - [12] Poulovassilis, A., and Childs, E.C. "The hysteresis of pore water: The non- indepence of domains". Journal of Soil Science, 112(5): 301-312, (1971).
CR  - [13] Sakai,M., and Toride, N.  "Soil water hydraulic functions for sandy soil and  an aggregated soil". J. Jpn. Soc. Soil Ohys., 107: 63-77, (2007).
CR  - [14] Dane, J.H., and Hruska, S. "In-situ determination of soil hydraulic properties during drainage". Soil Sci. Soc. Am. J., 4:  619-624, (1983).
CR  - [15] Haverkamp, R., Arrue, J.L., and Soet, M. "Soil physical properties within the root zone of the vine area of Tomelloso". Local and spatial standpoint, In Final integrated report of EFEDA II (European Field Experiment in a Desertification Area) Spain, Ed. J. F. Santa Olalla, CEE project n° CT920092, Brussels, chapter 3, (1997).
CR  - [16] Gillham, R.W., Klute, A., and Heermann, D.F. "Hydraulic properties o a porous medium: Measurement and empirical representation." Soil Science Society of America Journal, 40: 203-207, (1976).
CR  - [17] Huang, H.C., Tan, Y.C., Liu, C.W., and Chen, C.H. "A novel hysteresis model in unsaturated soil." Hydrol. Processes 19:1653-1665. doi:10.1002/hyp.5594, (2005).
CR  - [18] Chen, P., Wei, C. F., and Ma, T. T. (2015). “Analytical model of soil-water characteristics considering the effect of air entrapment.” Int. J. Geomech., 10.1061/(ASCE)GM.
UR  - https://doi.org/10.2339/politeknik.389619
L1  - https://dergipark.org.tr/en/download/article-file/418270
ER  -