Numerical simulation of the Marangoni effect on transient mass transfer from single moving deformable drops

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 masstransfer 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. V

Numerical Simulation of the Solute‐Induced Marangoni Effect with the Semi‐Lagrangian Advection Scheme

“…7 a and 7 b. The simulated results reported by Wang et al [33] overestimated significantly compared with the experimental ones, as listed in Tab. 3.…”

“…(7). The involved coefficients [33] were given as a = -0.475 and b = 0.06 for Case 1, and a = -0.74 and b = 0.14 for Case 2. …”

Relaxation oscillations of solutal Marangoni convection at curved interfaces

“…Even if the magnitude of Marangoni convection decreases rapidly with the distance from the interface, it changes the heat and mass transfer rates observed in such systems. This effect, already noted in the early experiments of Sherwood & Wei [1], motivated continuing research on Marangoni flow structures and their relation to mass transfer efficiency [2][3][4][5]. Furthermore, new technologies are developed which use these flow structures to pattern functional surfaces [6,7].…”

Biofluid spectroscopic disease diagnostics: A review on the processes and spectral impact of drying

“…Marangoni flow has been studied experimentally and through numerical and computational modelling . The simulations in these studies have the advantage of viewing the flow effects in more detail . This behaviour is common in pure liquids, but has been found to be far more complex in multiple component systems .…”