Saturated porous medium strain under osmotic actions

V. Richefeu, M. E. Youssoufi, J. Benet
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Abstract

This paper deals with an experimental and theoretical study of a porous medium strain during the transfers of a solution, which is composed of one solvent and only one solute. The porous medium is immersed into the same solution at different concentration. Resulting from concentration gradients, solvent and solute fluxes are created in opposite directions. Under some conditions relatives, for example, to the skeleton texture or to the solute molecule size, this mass transport can generate strains. We present a thermoporoelastic model taking into account the solvent / solute transport and the stresses / strains in a saturated porous medium. The porous medium is assumed to be isotropic, elastic and saturated with an ideal solution. We pay particular attention to the determination of the various parameters of the model. In the isothermal case, we give analytical relations that express the three most specific coefficients of this study.
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饱和多孔介质在渗透作用下的应变
本文对由一种溶剂和一种溶质组成的多孔介质在转移过程中的应变进行了实验和理论研究。将多孔介质浸入不同浓度的相同溶液中。由于浓度梯度,溶剂和溶质的通量在相反的方向上产生。在某些条件下,例如,与骨架结构或溶质分子大小有关,这种质量传递可以产生应变。我们提出了一个热孔弹性模型,考虑了饱和多孔介质中溶剂/溶质输运和应力/应变。多孔介质假定为各向同性、弹性和理想溶液饱和。我们特别注意模型各参数的确定。在等温情况下,我们给出了表达本研究的三个最具体系数的解析关系。
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