The physical and mathematical models of the Marangoni convection in liquid bridge with liquid encapsulation (two immiscible coaxial liquid columns) were established. With these models a series of numerical simulations of the Marangoni convection in liquid bridge with liquid encapsulation have been performed by the vorticity-stream function method and the Alternative Direction Implicit scheme in finite difference. The distributions of temperature and flow in liquid columns were then obtained. In this paper, it is mainly considered that the ratio of the temperature coefficient of interface tension to surface tension affects on the Marangoni convection in liquid bridge with liquid encapsulation.

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