[01] Ashraf Balabel, Mechanical Engineering Dept., Faculty of Engineering, Taif University, Al-Haweiah, Taif, Saudi Arabia.

The present paper introduces a numerical modeling for one of the most important problems of two-phase flows; namely the breakup mechanism of stretched liquid ligaments. The challenge problem of such complex flow is how to deal with the breakup of liquid ligaments in natural way without any constraints or numerical instability. The present modeling is based on solving the governing equations of motion in the liquid phase by the aid of the control volume strategy on a non-sta-ggered grid system. The level set function is further applied to track and capture the moving interface by using the normal velocity components located directly at the liquid interface. Some numerical test cases are performed to indicate the ability of the proposed numerical method in predicting the breakup mechanism of liquid ligaments. The obtained results showed that the developed numerical method is capable of simulating the formation and the breakup mechanism of the ligaments formed in two-phase flows without any numerical constraints.

Breakup Mechanism, Liquid Ligaments, Level Set Method, Numerical Modeling, Two-Phase Flow Dynamics

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