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Dynamics of Volumetric Moisture in Sand Caused by Injection Irrigation—Physical Model

1
Department of Environmental Development and Protection, Wrocław University of Environmental and Life Sciences, pl.Grunwaldzki 24, 50-363 Wrocław, Poland
2
Institute of Agrophysics, Polish Academy of Sciences, Doświadczalna 4, 20-290 Lublin, Poland
*
Author to whom correspondence should be addressed.
Academic Editors: George Kargas, Petros Kerkides, Paraskevi Londra and Pilar Montesinos
Water 2021, 13(11), 1603; https://doi.org/10.3390/w13111603
Received: 21 April 2021 / Revised: 2 June 2021 / Accepted: 3 June 2021 / Published: 6 June 2021
(This article belongs to the Special Issue Study of the Soil Water Movement in Irrigated Agriculture Ⅱ)
The study was aimed at the determination of the dynamics of spatial distribution of moisture front, caused by pointwise application of water under conditions of high pressure. This was effected through a series of simulations of water injection to a porous material with particle size distribution corresponding to that of sand. The study was composed of six independent experimental series in which the sand monolith was supplied with water doses of 250, 500, 750, 1000, 1250, and 1500 cm3 under pressure (4 bar). At the same time, measurements of volumetric moisture were conducted with the use of TDR sensors, which were positioned within the soil in a regular grid pattern. It was demonstrated that the primary cause of water movement at the moment of injection is the pressure potential gradient of water molecules. The spatial reach of moisture change in relation to the injected water dose was also defined. It was also observed that in the course of water injection there is a risk of disturbing the structure of the porous material. The correctness of the adopted method was verified through the calculation of the water balance. View Full-Text
Keywords: injection irrigation; sand; time domain reflectrometry; volumetric moisture injection irrigation; sand; time domain reflectrometry; volumetric moisture
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MDPI and ACS Style

Walczak, A.; Szypłowska, A.; Janik, G.; Pęczkowski, G. Dynamics of Volumetric Moisture in Sand Caused by Injection Irrigation—Physical Model. Water 2021, 13, 1603. https://doi.org/10.3390/w13111603

AMA Style

Walczak A, Szypłowska A, Janik G, Pęczkowski G. Dynamics of Volumetric Moisture in Sand Caused by Injection Irrigation—Physical Model. Water. 2021; 13(11):1603. https://doi.org/10.3390/w13111603

Chicago/Turabian Style

Walczak, Amadeusz, Agnieszka Szypłowska, Grzegorz Janik, and Grzegorz Pęczkowski. 2021. "Dynamics of Volumetric Moisture in Sand Caused by Injection Irrigation—Physical Model" Water 13, no. 11: 1603. https://doi.org/10.3390/w13111603

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