Self-propelled motion of a fluid droplet under chemical reaction

Shunsuke Yabunaka; Takao Ohta; Natsuhiko Yoshinaga

doi:10.1063/1.3685805

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arXiv · 1203.0593

Self-propelled motion of a fluid droplet under chemical reaction

Shunsuke Yabunaka·Takao Ohta·Natsuhiko Yoshinaga

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Abstract

We study self-propelled dynamics of a droplet due to a Marangoni effect and chemical reactions in a binary fluid with a dilute third component of chemical product which affects the interfacial energy of a droplet. The equation for the migration velocity of the center of mass of a droplet is derived in the limit of an infinitesimally thin inter- face. We found that there is a bifurcation from a motionless state to a propagating state of droplet by changing the strength of the Marangoni effect.

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Shunsuke Yabunaka, Takao Ohta, Natsuhiko Yoshinaga. 2012-03-03. Self-propelled motion of a fluid droplet under chemical reaction. https://doi.org/10.1063/1.3685805

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