Computational Investigation of Bubble-Shock Wave Interaction, Using Front Tracking-Ghost Fluid Method

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Razmi, Ashraf | 2020

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 57708 (45)
University: Sharif University of Technology
Department: Aerospace Engineering
Advisor(s): Taeibi Rahni, Mohammad; Massah, Hamid Reza
Abstract:
Shock wave–bubble interaction is not yet fully understood, while has many important applications. Such physics for example appears in sonoluminescense phenomenon, wherein a sinusoidal pressure field causes a gas bubble to first become large and then small enough to collapse. In this complex physics, spherical shock wave also appears right before, during, and right after the bubble bursting. On the other hand, modeling the interface between the liquid and gas in such problems, in which the gas becomes compressible is challenging. In this regard, Ghost-Fluid/Front Tracking method has shown to be very practical. In this work, the Euler equations have been computationally solved to simulate the interaction of a shock wave with a standing bubble. The results indicate that the mathematical model and the computational methodology used have obtained relatively accurate predictions
Keywords:
Numerical Simulation ; Bubble Dynamic ; Interfacial Flows ; Front Tracking Method ; Shock Wave–Bubble Interaction ; Front Tracking/Ghost Fluid Method ; Interfacial Multiphase Flow

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