Surface Tension Gradients on Mixing Processes after Coalescence of Binary Equal-Sized Droplets

doi:10.1088/0256-307X/30/7/074701

Chin. Phys. Lett.

2013, Vol. 30

Issue (7): 074701 DOI: 10.1088/0256-307X/30/7/074701

FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS)

Surface Tension Gradients on Mixing Processes after Coalescence of Binary Equal-Sized Droplets

LIU Dong, GUO Yin-Cheng^**, LIN Wen-Yi

School of Aerospace, Tsinghua University, Beijing 100084

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LIU Dong, GUO Yin-Cheng, LIN Wen-Yi 2013 Chin. Phys. Lett. 30 074701

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Abstract Numerical simulations on coalescence of binary equal-sized droplets with surface tension gradients are carried out by using the front tracking method. Mixing process of the fluid from each droplet is investigated. The tangential flow caused by the Marangoni effect and the interface replacement by the fluid with small surface tension coefficient are simulated successfully. Asymmetry caused by the surface tension gradients can generate some extent of mixing within the coalesced droplet. The effects of the surface tension gradients and viscosity on the tangential velocity, replacement time of interface and mixing are investigated.

Received: 22 February 2013 Published: 21 November 2013

PACS:	47.55.D-	(Drops and bubbles)
	47.52.+a
	47.55.pf	(Marangoni convection)

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https://cpl.iphy.ac.cn/10.1088/0256-307X/30/7/074701 OR https://cpl.iphy.ac.cn/Y2013/V30/I7/074701

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	LIU Dong
	GUO Yin-Cheng
	LIN Wen-Yi

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