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Zaisha Mao - One of the best experts on this subject based on the ideXlab platform.

  • visual dynamical measurement of the solute induced Marangoni Effect of a growing drop with a plif method
    Chemical Engineering Science, 2021
    Co-Authors: Zhenzhen Wang, Jie Chen, Xin Feng, Zaisha Mao, Chao Yang
    Abstract:

    Abstract We present a visualized measurement of the transient Marangoni Effect occurring in interfacial mass transfer processes by using a planner laser-induced fluorescence (PLIF) technique. Since acidity increased remarkably and linearly the fluorescent intensity of Rhodamine B, the concentration distribution of acidic solute inside a drop was obtained by PLIF. Thus, based on the concentration contours of solute, we could probe into the bulk flow and occurrence of the Marangoni Effect. The Marangoni Effect has been known to be affected by the physical properties of the test system, initial solute concentration, the operating conditions and device configurations. With existence of neutralization reaction in the extraction system, the Marangoni Effect was declined as for the acetic acid being consumed rapidly. Last, we found that the density Effect of solute coupled with Marangoni Effect, which further affected the distribution of solute and then influenced the location and evolution of Marangoni Effect.

  • The interphase mass transfer in liquid–liquid systems with Marangoni Effect
    The European Physical Journal Special Topics, 2015
    Co-Authors: Jiayong Chen, Chao Yang, Zaisha Mao
    Abstract:

    In this paper, we review the related studies on the interphase mass transfer process accompanied with Marangoni Effect in liquid-liquid systems. The Marangoni Effect is triggered by the local variation of interfacial tension and influenced by many factors, such as the physicochemical properties of the system, the solute concentration and the bulk flow. The onset criterion of the Marangoni Effect has been discussed extensively via theoretical analysis and experimental verification, but a unified and universal criterion was still not developed due to the complex system geometry and boundary conditions. When the Marangoni convection occurred, the bulk flow adjacent to the interface was spontaneously disturbed, normally leading to an enhanced mass transfer coefficient. Besides, the surface active agent has been found to affect the solute transport across the interface, by either promoting or inhibiting the Marangoni convection according to the nature of additives.

  • numerical simulation of the solute induced Marangoni Effect with the semi lagrangian advection scheme
    Chemical Engineering & Technology, 2015
    Co-Authors: Jie Chen, Zhihui Wang, Chao Yang, Zaisha Mao
    Abstract:

    The level set method is combined with the concentration transformation method to solve the interphase mass transfer process. However, the artificial diffusion generated in the mass transfer convection term across the interface is inevitable, especially when large shape deformation is encountered at high Reynolds numbers. A semi-Lagrangian advection scheme is introduced to overcome this disadvantage. The methyl isobutyl ketone (MIBK)-acetic acid-water system is adopted to study the unsteady mass transport process accompanied with the Marangoni Effect of a single deformable drop ascending in the infinite continuous phase. The predicted overall mass transfer coefficients agree with experimental data very well. The configuration of Marangoni convection is revealed and its Effect on the interphase mass transfer process is investigated.

  • Experimental Investigation and Numerical Simulation of Marangoni Effect Induced by Mass Transfer during Drop Formation
    AIChE Journal, 2013
    Co-Authors: Zhihui Wang, Chao Yang, Yang Wang, Zaisha Mao
    Abstract:

    Marangoni Effect induced by interphase mass transfer plays an important role in liquid-liquid extraction and reaction processes. The interaction of Marangoni Effect and interphase mass transfer during drop formation at different injection rates and different initial solute concentrations was investigated by experimental and numerical simulation. The extraction fraction was measured and the corresponding correlation was proposed. The level-set method coupled with mass-transfer equation is for the first time used to simulate the mass-transfer induced Marangoni Effect during drop formation. The simulated drop volume, shape, and extraction fraction are in good accordance with experimental data. Through the numerical simulation, it is found that the mass transfer in the first mass-transfer period is the most efficient during drop formation when Marangoni convection occurs. (c) 2013 American Institute of Chemical Engineers AIChE J, 59: 4424-4439, 2013

  • experimental investigation of Marangoni Effect in 1 hexanol water system
    Chemical Engineering Science, 2011
    Co-Authors: Zhihui Wang, Chao Yang, Guangji Zhang, Yumei Yong, Zaisha Mao
    Abstract:

    In this work, the interfacial phenomena of a single hanging drop have been observed and captured by a Schlieren optical system. The extraction fractions at different hanging times were determined. For the system without surfactant, the Marangoni Effect induced by interphase mass transfer of a solute displays regular convection patterns. The addition of surfactants changed the mode of interfacial instability significantly but in different ways: SDS enhanced the mass transfer and Triton X-100 reduced the extraction fraction.

Jiayong Chen - One of the best experts on this subject based on the ideXlab platform.

  • The interphase mass transfer in liquid–liquid systems with Marangoni Effect
    The European Physical Journal Special Topics, 2015
    Co-Authors: Jiayong Chen, Chao Yang, Zaisha Mao
    Abstract:

    In this paper, we review the related studies on the interphase mass transfer process accompanied with Marangoni Effect in liquid-liquid systems. The Marangoni Effect is triggered by the local variation of interfacial tension and influenced by many factors, such as the physicochemical properties of the system, the solute concentration and the bulk flow. The onset criterion of the Marangoni Effect has been discussed extensively via theoretical analysis and experimental verification, but a unified and universal criterion was still not developed due to the complex system geometry and boundary conditions. When the Marangoni convection occurred, the bulk flow adjacent to the interface was spontaneously disturbed, normally leading to an enhanced mass transfer coefficient. Besides, the surface active agent has been found to affect the solute transport across the interface, by either promoting or inhibiting the Marangoni convection according to the nature of additives.

  • the interphase mass transfer in liquid liquid systems with Marangoni Effect
    European Physical Journal-special Topics, 2015
    Co-Authors: Jiayong Chen, Chao Yang
    Abstract:

    In this paper, we review the related studies on the interphase mass transfer process accompanied with Marangoni Effect in liquid-liquid systems. The Marangoni Effect is triggered by the local variation of interfacial tension and influenced by many factors, such as the physicochemical properties of the system, the solute concentration and the bulk flow. The onset criterion of the Marangoni Effect has been discussed extensively via theoretical analysis and experimental verification, but a unified and universal criterion was still not developed due to the complex system geometry and boundary conditions. When the Marangoni convection occurred, the bulk flow adjacent to the interface was spontaneously disturbed, normally leading to an enhanced mass transfer coefficient. Besides, the surface active agent has been found to affect the solute transport across the interface, by either promoting or inhibiting the Marangoni convection according to the nature of additives.

  • numerical simulation of the Marangoni Effect on mass transfer to single slowly moving drops in the liquid liquid system
    Chemical Engineering Science, 2004
    Co-Authors: Jiayong Chen
    Abstract:

    The Marangoni Effect is a frequently observed phenomenon of enhancement of interphase mass transfer in liquid-liquid systems. Such an Effect, originating front the hydrodynamic instability induced by surface tension sensitivity to surface concentration of transferred solute, is mathematically formulated and numerically simulated for slowly moving single spherical drops in an axisymmetric boundary-fitted coordinate system by solving coupled fluid flow and solute mass transfer equations. Numerical simulation demonstrates the occurrence of the Marangoni Effect under typical conditions in liquid-liquid systems, and is in reasonable agreement with the classic theoretical analysis. Sufficient spatial and temporal resolution in simulation reveals the multi-scale interaction of the drop-scale Marangoni Effect with the sub-drop-scale local interfacial convection. The Effect of solute transfer direction, Peclet number, surface tension sensitivity to solute concentration, and level of random perturbation on surface concentration are investigated numerically. It is shown that the Marangoni Effect occurs in the middle stage of a transient interphase mass transfer process, and the Marangoni convection at the interface does not necessarily results in the Marangoni Effect of mass transfer enhancement. Besides, the Marangoni Effect occurs only when the surface tension sensitivity to the solute concentration variation is above certain critical level. The present axisymmetric simulation of the Marangoni Effect provides necessary basis for further work on three-dimensional numerical analysis. (C) 2004 Elsevier Ltd. All rights reserved.

  • Numerical simulation of the Marangoni Effect on mass transfer to single slowly moving drops in the liquid–liquid system
    Chemical Engineering Science, 2004
    Co-Authors: Zaisha Mao, Jiayong Chen
    Abstract:

    The Marangoni Effect is a frequently observed phenomenon of enhancement of interphase mass transfer in liquid-liquid systems. Such an Effect, originating front the hydrodynamic instability induced by surface tension sensitivity to surface concentration of transferred solute, is mathematically formulated and numerically simulated for slowly moving single spherical drops in an axisymmetric boundary-fitted coordinate system by solving coupled fluid flow and solute mass transfer equations. Numerical simulation demonstrates the occurrence of the Marangoni Effect under typical conditions in liquid-liquid systems, and is in reasonable agreement with the classic theoretical analysis. Sufficient spatial and temporal resolution in simulation reveals the multi-scale interaction of the drop-scale Marangoni Effect with the sub-drop-scale local interfacial convection. The Effect of solute transfer direction, Peclet number, surface tension sensitivity to solute concentration, and level of random perturbation on surface concentration are investigated numerically. It is shown that the Marangoni Effect occurs in the middle stage of a transient interphase mass transfer process, and the Marangoni convection at the interface does not necessarily results in the Marangoni Effect of mass transfer enhancement. Besides, the Marangoni Effect occurs only when the surface tension sensitivity to the solute concentration variation is above certain critical level. The present axisymmetric simulation of the Marangoni Effect provides necessary basis for further work on three-dimensional numerical analysis. (C) 2004 Elsevier Ltd. All rights reserved.

  • Numerical simulation of the Marangoni Effect on mass transfer to single slowly moving drops in the liquid–liquid system
    Chemical Engineering Science, 2004
    Co-Authors: Zaisha Mao, Jiayong Chen
    Abstract:

    The Marangoni Effect is a frequently observed phenomenon of enhancement of interphase mass transfer in liquid-liquid systems. Such an Effect, originating front the hydrodynamic instability induced by surface tension sensitivity to surface concentration of transferred solute, is mathematically formulated and numerically simulated for slowly moving single spherical drops in an axisymmetric boundary-fitted coordinate system by solving coupled fluid flow and solute mass transfer equations. Numerical simulation demonstrates the occurrence of the Marangoni Effect under typical conditions in liquid-liquid systems, and is in reasonable agreement with the classic theoretical analysis. Sufficient spatial and temporal resolution in simulation reveals the multi-scale interaction of the drop-scale Marangoni Effect with the sub-drop-scale local interfacial convection. The Effect of solute transfer direction, Peclet number, surface tension sensitivity to solute concentration, and level of random perturbation on surface concentration are investigated numerically. It is shown that the Marangoni Effect occurs in the middle stage of a transient interphase mass transfer process, and the Marangoni convection at the interface does not necessarily results in the Marangoni Effect of mass transfer enhancement. Besides, the Marangoni Effect occurs only when the surface tension sensitivity to the solute concentration variation is above certain critical level. The present axisymmetric simulation of the Marangoni Effect provides necessary basis for further work on three-dimensional numerical analysis. (C) 2004 Elsevier Ltd. All rights reserved.The Marangoni Effect is a frequently observed phenomenon of enhancement of interphase mass transfer in liquid-liquid systems. Such an Effect, originating front the hydrodynamic instability induced by surface tension sensitivity to surface concentration of transferred solute, is mathematically formulated and numerically simulated for slowly moving single spherical drops in an axisymmetric boundary-fitted coordinate system by solving coupled fluid flow and solute mass transfer equations. Numerical simulation demonstrates the occurrence of the Marangoni Effect under typical conditions in liquid-liquid systems, and is in reasonable agreement with the classic theoretical analysis. Sufficient spatial and temporal resolution in simulation reveals the multi-scale interaction of the drop-scale Marangoni Effect with the sub-drop-scale local interfacial convection. The Effect of solute transfer direction, Peclet number, surface tension sensitivity to solute concentration, and level of random perturbation on surface concentration are investigated numerically. It is shown that the Marangoni Effect occurs in the middle stage of a transient interphase mass transfer process, and the Marangoni convection at the interface does not necessarily results in the Marangoni Effect of mass transfer enhancement. Besides, the Marangoni Effect occurs only when the surface tension sensitivity to the solute concentration variation is above certain critical level. The present axisymmetric simulation of the Marangoni Effect provides necessary basis for further work on three-dimensional numerical analysis. (C) 2004 Elsevier Ltd. All rights reserved

Chao Yang - One of the best experts on this subject based on the ideXlab platform.

  • visual dynamical measurement of the solute induced Marangoni Effect of a growing drop with a plif method
    Chemical Engineering Science, 2021
    Co-Authors: Zhenzhen Wang, Jie Chen, Xin Feng, Zaisha Mao, Chao Yang
    Abstract:

    Abstract We present a visualized measurement of the transient Marangoni Effect occurring in interfacial mass transfer processes by using a planner laser-induced fluorescence (PLIF) technique. Since acidity increased remarkably and linearly the fluorescent intensity of Rhodamine B, the concentration distribution of acidic solute inside a drop was obtained by PLIF. Thus, based on the concentration contours of solute, we could probe into the bulk flow and occurrence of the Marangoni Effect. The Marangoni Effect has been known to be affected by the physical properties of the test system, initial solute concentration, the operating conditions and device configurations. With existence of neutralization reaction in the extraction system, the Marangoni Effect was declined as for the acetic acid being consumed rapidly. Last, we found that the density Effect of solute coupled with Marangoni Effect, which further affected the distribution of solute and then influenced the location and evolution of Marangoni Effect.

  • the interphase mass transfer in liquid liquid systems with Marangoni Effect
    European Physical Journal-special Topics, 2015
    Co-Authors: Jiayong Chen, Chao Yang
    Abstract:

    In this paper, we review the related studies on the interphase mass transfer process accompanied with Marangoni Effect in liquid-liquid systems. The Marangoni Effect is triggered by the local variation of interfacial tension and influenced by many factors, such as the physicochemical properties of the system, the solute concentration and the bulk flow. The onset criterion of the Marangoni Effect has been discussed extensively via theoretical analysis and experimental verification, but a unified and universal criterion was still not developed due to the complex system geometry and boundary conditions. When the Marangoni convection occurred, the bulk flow adjacent to the interface was spontaneously disturbed, normally leading to an enhanced mass transfer coefficient. Besides, the surface active agent has been found to affect the solute transport across the interface, by either promoting or inhibiting the Marangoni convection according to the nature of additives.

  • The interphase mass transfer in liquid–liquid systems with Marangoni Effect
    The European Physical Journal Special Topics, 2015
    Co-Authors: Jiayong Chen, Chao Yang, Zaisha Mao
    Abstract:

    In this paper, we review the related studies on the interphase mass transfer process accompanied with Marangoni Effect in liquid-liquid systems. The Marangoni Effect is triggered by the local variation of interfacial tension and influenced by many factors, such as the physicochemical properties of the system, the solute concentration and the bulk flow. The onset criterion of the Marangoni Effect has been discussed extensively via theoretical analysis and experimental verification, but a unified and universal criterion was still not developed due to the complex system geometry and boundary conditions. When the Marangoni convection occurred, the bulk flow adjacent to the interface was spontaneously disturbed, normally leading to an enhanced mass transfer coefficient. Besides, the surface active agent has been found to affect the solute transport across the interface, by either promoting or inhibiting the Marangoni convection according to the nature of additives.

  • numerical simulation of the solute induced Marangoni Effect with the semi lagrangian advection scheme
    Chemical Engineering & Technology, 2015
    Co-Authors: Jie Chen, Zhihui Wang, Chao Yang, Zaisha Mao
    Abstract:

    The level set method is combined with the concentration transformation method to solve the interphase mass transfer process. However, the artificial diffusion generated in the mass transfer convection term across the interface is inevitable, especially when large shape deformation is encountered at high Reynolds numbers. A semi-Lagrangian advection scheme is introduced to overcome this disadvantage. The methyl isobutyl ketone (MIBK)-acetic acid-water system is adopted to study the unsteady mass transport process accompanied with the Marangoni Effect of a single deformable drop ascending in the infinite continuous phase. The predicted overall mass transfer coefficients agree with experimental data very well. The configuration of Marangoni convection is revealed and its Effect on the interphase mass transfer process is investigated.

  • Experimental Investigation and Numerical Simulation of Marangoni Effect Induced by Mass Transfer during Drop Formation
    AIChE Journal, 2013
    Co-Authors: Zhihui Wang, Chao Yang, Yang Wang, Zaisha Mao
    Abstract:

    Marangoni Effect induced by interphase mass transfer plays an important role in liquid-liquid extraction and reaction processes. The interaction of Marangoni Effect and interphase mass transfer during drop formation at different injection rates and different initial solute concentrations was investigated by experimental and numerical simulation. The extraction fraction was measured and the corresponding correlation was proposed. The level-set method coupled with mass-transfer equation is for the first time used to simulate the mass-transfer induced Marangoni Effect during drop formation. The simulated drop volume, shape, and extraction fraction are in good accordance with experimental data. Through the numerical simulation, it is found that the mass transfer in the first mass-transfer period is the most efficient during drop formation when Marangoni convection occurs. (c) 2013 American Institute of Chemical Engineers AIChE J, 59: 4424-4439, 2013

Zijing Ding - One of the best experts on this subject based on the ideXlab platform.

  • breakup of ultra thin liquid films on vertical fiber enhanced by Marangoni Effect
    Chemical Engineering Science, 2019
    Co-Authors: Zijing Ding, Zhou Liu, Rong Liu, Chun Yang
    Abstract:

    Abstract An ultra-thin liquid film flowing down a vertical uniformly heated cylinder under the influence of gravity is investigated. A thin liquid film model is derived, assuming that the film thickness h is much smaller than the fiber radius a. To predict the breakup of film, the van der Waals attraction, proportional to h - 3 , is taken into account. Linear stability analysis shows that the Rayleigh-Plateau instability is enhanced by the long-range attractions and Marangoni Effect. The spatial-temporal stability analysis shows that the instability is absolute when A + M > 0.17 (A is a composite Hamaker number accounting for the strength of van der Waals attractions and M is the Marangoni number). A self-similarity analysis shows that the film thins as h ∼ ( t r - t ) 1 / 5 ( t r is the breakup time), which is supported by the numerical simulations of the thin film model. Although the scaling is independent on the Marangoni Effect, nonlinear simulations demonstrate that the breakup time t r decreases as the Marangoni Effect becomes stronger, demonstrating that the breakup process is accelerated by the Marangoni Effect. Nonlinear simulation also shows that the thin heated or non-heated film mainly breaks up in the absolutely unstable regime.

  • Absolute instability induced by Marangoni Effect in thin liquid film flows on vertical cylindrical surfaces
    Chemical Engineering Science, 2018
    Co-Authors: Zijing Ding, Teck Neng Wong, Rong Liu, Chun Yang
    Abstract:

    Abstract This paper investigates a thin liquid film flowing down the interior or exterior surface of a vertical uniformly heated cylinder under the influence of gravity. A thin liquid film model, which is applicable to both cases, is derived to examine the Marangoni Effect on the spatial-temporal dynamics. Linear stability analysis predicts that an absolutely unstable mode could be initiated by the Marangoni Effect even if the film thickness is very thin compared to the cylinder’s radius. The linear stability analysis shows that the instability is always absolute for arbitrary capillary number if a composite Marangoni number M = 3 MaBi 2 ( 1 + Bi ) 2 exceeds a critical value M = - 17 + 7 7 3 ≈ 0.71 ( Ma is the Marangoni number, and Bi is the Biot number). Direct numerical simulations of the linearized and the full thin film model demonstrated the linear analysis. Results of the direct numerical simulations also show that the film has a strong tendency to break up into more droplets or rupture in the absolute instability regime. Nonlinear study also shows that the coalescence of droplets/ring waves and bound state are weakly dependent on the absolute or convective instability.

  • three dimensional dynamics of thin liquid films on vertical cylinders with Marangoni Effect
    Physics of Fluids, 2017
    Co-Authors: Zijing Ding, Teck Neng Wong
    Abstract:

    The Effects of thermocapillary force on the three dimensional dynamics of thin liquid films flowing down a uniformly heated vertical cylinder are investigated using a thin film model. Linear and nonlinear analyses predict the existence of a non-axisymmetric mode due to the Marangoni Effect. Symmetry-breaking of axisymmetric steady traveling waves is observed when the Marangoni number exceeds a critical value. Linear stability analysis demonstrates that the steady traveling wave can be unstable to azimuthal disturbances due to the Marangoni Effect, leading to the formation of non-axisymmetric patterns.

Zhihui Wang - One of the best experts on this subject based on the ideXlab platform.

  • numerical simulation of the solute induced Marangoni Effect with the semi lagrangian advection scheme
    Chemical Engineering & Technology, 2015
    Co-Authors: Jie Chen, Zhihui Wang, Chao Yang, Zaisha Mao
    Abstract:

    The level set method is combined with the concentration transformation method to solve the interphase mass transfer process. However, the artificial diffusion generated in the mass transfer convection term across the interface is inevitable, especially when large shape deformation is encountered at high Reynolds numbers. A semi-Lagrangian advection scheme is introduced to overcome this disadvantage. The methyl isobutyl ketone (MIBK)-acetic acid-water system is adopted to study the unsteady mass transport process accompanied with the Marangoni Effect of a single deformable drop ascending in the infinite continuous phase. The predicted overall mass transfer coefficients agree with experimental data very well. The configuration of Marangoni convection is revealed and its Effect on the interphase mass transfer process is investigated.

  • Experimental Investigation and Numerical Simulation of Marangoni Effect Induced by Mass Transfer during Drop Formation
    AIChE Journal, 2013
    Co-Authors: Zhihui Wang, Chao Yang, Yang Wang, Zaisha Mao
    Abstract:

    Marangoni Effect induced by interphase mass transfer plays an important role in liquid-liquid extraction and reaction processes. The interaction of Marangoni Effect and interphase mass transfer during drop formation at different injection rates and different initial solute concentrations was investigated by experimental and numerical simulation. The extraction fraction was measured and the corresponding correlation was proposed. The level-set method coupled with mass-transfer equation is for the first time used to simulate the mass-transfer induced Marangoni Effect during drop formation. The simulated drop volume, shape, and extraction fraction are in good accordance with experimental data. Through the numerical simulation, it is found that the mass transfer in the first mass-transfer period is the most efficient during drop formation when Marangoni convection occurs. (c) 2013 American Institute of Chemical Engineers AIChE J, 59: 4424-4439, 2013

  • numerical simulation of the Marangoni Effect on transient mass transfer from single moving deformable drops
    Aiche Journal, 2011
    Co-Authors: Jianfeng Wang, Zhihui Wang, Ping Lu, Chao Yang
    Abstract:

    A level set approach was adopted in numerical simulation of interphase mass transfer from a deformable drop moving in a continuous immiscible liquid, and the simulation results on Marangoni Effect were presented with respect to three experimental runs in the methyl isobutyl ketone-acetic acid-water system. Experiments showed that when the solute concentration was sufficiently high, the Marangoni Effect would occur with the interphase mass transfer enhanced. Numerical results indicated that the mass-transfer coefficient with Marangoni Effect was larger than that without Marangoni Effect and stronger Marangoni Effect made the drop deform more easily. The predictions were qualitatively in accord with the experimental data. Numerical simulation revealed well the transient flow structure of Marangoni Effect. (C) 2011 American Institute of Chemical Engineers AIChE J, 57: 2670-2683, 2011

  • experimental investigation of Marangoni Effect in 1 hexanol water system
    Chemical Engineering Science, 2011
    Co-Authors: Zhihui Wang, Chao Yang, Guangji Zhang, Yumei Yong, Zaisha Mao
    Abstract:

    In this work, the interfacial phenomena of a single hanging drop have been observed and captured by a Schlieren optical system. The extraction fractions at different hanging times were determined. For the system without surfactant, the Marangoni Effect induced by interphase mass transfer of a solute displays regular convection patterns. The addition of surfactants changed the mode of interfacial instability significantly but in different ways: SDS enhanced the mass transfer and Triton X-100 reduced the extraction fraction.

  • Numerical simulation of the Marangoni Effect on transient mass transfer from single moving deformable drops
    AIChE Journal, 2011
    Co-Authors: Jianfeng Wang, Zhihui Wang, Chao Yang, Zaisha Mao
    Abstract:

    A level set approach was adopted in numerical simulation of interphase mass transfer from a deformable drop moving in a continuous immiscible liquid, and the simulation results on Marangoni Effect were presented with respect to three experimental runs in the methyl isobutyl ketone-acetic acid-water system. Experiments showed that when the solute concentration was sufficiently high, the Marangoni Effect would occur with the interphase mass transfer enhanced. Numerical results indicated that the mass-transfer coefficient with Marangoni Effect was larger than that without Marangoni Effect and stronger Marangoni Effect made the drop deform more easily. The predictions were qualitatively in accord with the experimental data. Numerical simulation revealed well the transient flow structure of Marangoni Effect. (C) 2011 American Institute of Chemical Engineers AIChE J, 57: 2670-2683, 2011