Abstract
A system of improved hydrophysical functions describing the water-retention capacity and hydraulic conductivity of the soil is presented. The mathematical description of the functions is based on the physical ideas about the structure of the pore space of the soil and the capillarity phenomenon. For both functions, the parameters are common. The advantages of the presented functions are described in comparison with the most well-known world analogues, which are used in the Mualem-Van Genuchten method. An example of estimation of the ratio of the hydraulic conductivity of a soil to the filtration coefficient of moisture according to the data on the water-retention capacity of a soil of sandy particle size distribution is given. The presented system of hydrophysical functions of the soil can be used to justify the development and resource-saving technologies in irrigation and drainage construction and irrigation agriculture. Practical application of applied models based on these functions will significantly reduce the energy intensity of the operation of irrigation and drainage systems and the production of agricultural products.
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Acknowledgments
The reported study was funded by RFBR according to the research projects No 19-04-00939-a, No 19-016-00148-a.
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Terleev, V. et al. (2019). Improved Hydrophysical Functions of the Soil and Their Comparison with Analogues by the Williams-Kloot Test. In: Murgul, V., Pasetti, M. (eds) International Scientific Conference Energy Management of Municipal Facilities and Sustainable Energy Technologies EMMFT 2018. EMMFT-2018 2018. Advances in Intelligent Systems and Computing, vol 983. Springer, Cham. https://doi.org/10.1007/978-3-030-19868-8_45
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