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Simulation of evaporation, coupled liquid water, water vapor and heat transport through the soil medium

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  • Banimahd, S.A.
  • Zand-Parsa, Sh.

Abstract

In this research, the model of SWCT (soil water content and temperature) was developed for simulation of fluxes of soil water (liquid water and water vapor) and heat. The governing equations for water and heat fluxes were solved using numerical finite difference method. Soil water content and temperature were numerically solved using a fully explicit method. The measurement devices of temperature sensors and TDR probes (for measuring water content) were installed at soil depths of 0.05, 0.35, and 0.5m, at the selected site. The novelty of this study was the simulation of actual evaporation from the soil surface using the Penman–Monteith's equation, in which the value of saturated air vapor pressure was substituted by actual soil vapor pressure at the surface layer. This novelty allowed estimation of the actual evaporation rate based on soil water content and temperature and meteorological data. Simulated water contents followed reasonably well the measured values at three soil depths during the simulation period. Soil water content and temperature were numerically simulated using the SWCT model with coupling liquid water, water vapor, and heat transport and provided reasonably good results with the values of RMSE less than 0.017cm3cm−3 and 2.2°C, respectively.

Suggested Citation

  • Banimahd, S.A. & Zand-Parsa, Sh., 2013. "Simulation of evaporation, coupled liquid water, water vapor and heat transport through the soil medium," Agricultural Water Management, Elsevier, vol. 130(C), pages 168-177.
  • Handle: RePEc:eee:agiwat:v:130:y:2013:i:c:p:168-177
    DOI: 10.1016/j.agwat.2013.08.022
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    References listed on IDEAS

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    1. Timlin, D. J. & Pachepsky, Ya. & Acock, B. A. & Simunek, J. & Flerchinger, G. & Whisler, F., 2002. "Error analysis of soil temperature simulations using measured and estimated hourly weather data with 2DSOIL," Agricultural Systems, Elsevier, vol. 72(3), pages 215-239, June.
    2. Zand-Parsa, Sh. & Sepaskhah, A.R. & Ronaghi, A., 2006. "Development and evaluation of integrated water and nitrogen model for maize," Agricultural Water Management, Elsevier, vol. 81(3), pages 227-256, March.
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    Cited by:

    1. Carlos E. Villarreal-Olavarrieta & Néstor García-Chan & Miguel E. Vázquez-Méndez, 2021. "Simulation of Heat and Water Transport on Different Tree Canopies: A Finite Element Approach," Mathematics, MDPI, vol. 9(19), pages 1-20, September.
    2. Seyed Adib Banimahd & Davar Khalili & Shahrokh Zand-Parsa & Ali Akbar Kamgar-Haghighi, 2017. "Development of a Simulation Model for Estimation of Potential Recharge in a Semi-arid Foothill Region," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 31(5), pages 1535-1556, March.

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