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Transport analysis in deformable porous media through integral transforms
International Journal for Numerical and Analytical Methods in Geomechanics ( IF 3.4 ) Pub Date : 2020-09-27 , DOI: 10.1002/nag.3150
Alessandra Bonazzi 1 , Birendra Jha 2 , Felipe P. J. de Barros 1
Affiliation  

Geomechanical deformation can alter the flow field that impacts solute mass fluxes. Despite its importance, the effects of the coupling between geomechanical deformation and the flow field on solute transport behavior are not fully known. In this paper, we study the impact of this coupling on the solute concentration distribution. The concentration field is semianalytically derived by making use of the generalized integral transform technique. We apply the semianalytical solution to two uniaxial consolidation problems, the classical Terzaghi's problem with a constant load and the case of periodic loading of a porous deformable layer. Our results indicate that geomechanical parameters, such as the Skempton's coefficient and the soil compressibility, can affect the peak concentration as well as the spatial moments of solute plume. In case of periodic loading, we show that the frequency of loading also plays a key role in regulating the temporal dynamics of the concentration field.

中文翻译:

通过积分变换在可变形多孔介质中的传输分析

地质力学变形会改变影响溶质通量的流场。尽管它很重要,但地质力学变形和流场之间的耦合对溶质运移行为的影响尚不完全清楚。在本文中,我们研究了这种耦合对溶质浓度分布的影响。通过使用广义积分变换技术半解析地得出浓度场。我们将半解析解应用于两个单轴固结问题,即具有恒定载荷的经典Terzaghi问题和多孔可变形层的周期性载荷情况。我们的结果表明,Skempton系数和土壤可压缩性等地质力学参数会影响峰浓度以及溶质羽流的空间矩。
更新日期:2020-09-27
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