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Hysteretic Water Flow in a Porous Medium:Experimental Study and Numerical Simulation.

机译：多孔介质中滞回水流动的实验研究与数值模拟。

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The differential equation describing the flow of the solution phase in a partially saturated porous medium can be solved numerically to predict the time and spatial distributions of water content and pressure head which would result from imposed initial and boundary conditions. Most porous media have a highly hysteretic water content-pressure head relationship,and since natural boundary conditions induce hysteretic flow systems,hysteresis should be accounted for in solutions of the flow equation. Good agreement found between the predicted and measured values for the slow drainage-rewet experiment indicated that under the conditions of this experiment the unsaturated flow equation is an adequate description of the flow process. The numerical solution used was an adequate solution of the flow equation for a nonuniform medium. The scale of the nonuniformity in the medium used was rather small.

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作者
fillham,robert winston;
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年度 1974
页码 1-100
总页数 100
原文格式 PDF
正文语种 eng
中图分类工业技术;
关键词
soil water; water flow; computerized simulationporous materials; unsteady flow; experimentation; hysteresis; theses;

机译：土壤水;水流;计算机模拟多孔材料;非定常流动;实验;滞后;论文;

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2. Numerical Study of the Combined Free-Forced Convection and Mass Transfer Flow Past a Vertical Porous Plate in a Porous Medium with Heat Generation and Thermal Diffusion [J] . M.S. Alam, M.M. Rahman, M.A. Samad Nonlinear Analysis : Modelling and Control . 2006,第4期

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5. Experimental and numerical study of transient water flow and solute transport in layered saturated-unsaturated porous media. [D] . Uddin, Mafiz Md. 1998

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Hysteretic Water Flow in a Porous Medium:Experimental Study and Numerical Simulation.

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