Marangoni Effect

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Definition

WineTears.jpg

The Marangoni effect is the flow of fluid caused by a gradient in surface tension [1,2]. The gradient in surface tension can be caused by a gradient in temperature or chemical concentration [2]. Fluid flows from a region with low surface tension to a region with high surface tension as seen clearly in the following video: Marangoni Effect Example 1

References

[1] Velarde, Manuel, "Drops, Liquid Layers and the Marangoni Effect," Philosophical Transactions: Mathematical, Physical and Engineering Sciences 356 829-844 (1998).

[2] Mei, C., "Lecture 4: Marangoni flows," Fluid Dynamics Lecture Notes (May 5, 2004).