Abstract
We develop a three-fluid front-tracking method in order to simulate the motion of an axisymmetry compound droplet, which consists of three immis- cible fluids separated by two different interfaces. The two interfaces of the com- pound droplet are represented by two different sets of the front-tracking elements immersed on the Eulerian grid mesh, where the velocities and the pressure are calculated. The density and viscosity profiles with jumps at the interfaces are suc- cessfully determined from the location and the connection information of the front- tracking elements. The motion of a compound droplet is simulated on axisymmetric cylindrical coordinates. The results show that the three-fluid front tracking method works appropriately for the motion of a compound droplet. Stability of a spherical compound droplet is examined numerically and the stable position is found from the simulations.
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