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Phase Field Model of Thermo-Induced marangoni effects in the Mixtures and its Numerical Simulations with Mixed Finite Element Method

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Communications in Computational Physics 2009年第10期6卷 1095-1117页

作者： Pengtao Sun Chun Liu Jinchao Xu Department of Mathematical Sciences University of NevadaLas Vegas4505 Maryland ParkwayLas VegasNV 89154USA Department of Mathematics The Pennsylvania State UniversityUniversity ParkPA 16802USA

In this paper,we study the marangoni effects in the mixture of two Newtonian fluids due to the thermo-induced surface tension heterogeneity on the *** employ an energetic variational phase field model to describe its physical phenomena,and obtain the corresponding governing equations defined by a modi-fied Navier-Stokes equations coupled with phase field and energy transport.A mixed Taylor-Hood finite element discretization together with full Newton’s method are applied to this strongly nonlinear phase field model on a specific *** different boundary conditions of temperature,the resulting numerical solutions illustrate that the thermal energy plays a fundamental role in the interfacial dynamics of two-phase *** particular,it gives rise to a dynamic interfacial tension that depends on the direction of temperature gradient,determining the movement of the interface along a sine/cosine-like curve.

关键词： Phase field Navier-Stokes equations marangoni effects temperature dependent surface tension mixed Taylor-Hood finite element Newton’s method

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Impact of solutal marangoni convection on oil recovery during chemical flooding

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Petroleum Science 2020年第5期17卷 1298-1317页

作者： Sepideh Palizdan Jassem Abbasi Masoud Riazi Mohammad Reza Malayeri School of Chemical and Petroleum Engineering Shiraz UniversityMolasadra Avenue71946-84636 ShirazFarsIran

In this study,the impacts of solutal marangoni phenomenon on multiphase flow in static and micromodel geometries have experimentally been studied and the interactions between oil droplet and two different alkaline solutions(***04 and Na_2 CO_3) were *** static tests revealed that the marangoni convection exists in the presence of the alkaline and oil which should carefully be considered in porous *** the micromodel experiments,observations showed that in the MgS04 flooding,the fluids stayed almost stationary,while in the Na2 C03 flooding,a spontaneous movement was *** changes in the distribution of fluids showed that the circular movement of fluids due to the marangoni effects can be effective in draining of the unswept *** dimensional analysis for possible mechanisms showed that the viscous,gravity and diffusion forces were negligible and the other mechanisms such as capillary and marangoni effects should be considered in the investigated *** value of the new defined marangoni/capillary dimensionless number for the Na2 C03 solution was orders of magnitude larger than the MgS04 flooding scenario which explains the differences between the two cases and also between different micromodel *** conclusion,the marangoni convection is activated by creating an ultra-low IFT condition in multiphase flow problems that can be profoundly effective in increasing the phase mixing and microscopic efficiency.

关键词： marangoni effects Chemical flooding Surface tension Alkaline

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