Numerical Investigation of Shock Bubble Interaction using Wavelet Adaptive Multi-Resolution Method
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MS Thesis Rahul
Type
ThesisAuthors
Dhopeshwar, Rahul
Advisors
Im, Hong G.
Committee members
Thoroddsen, Sigurdur T
Sun, Shuyu

Program
Mechanical EngineeringKAUST Department
Physical Science and Engineering (PSE) DivisionDate
2018-07Permanent link to this record
http://hdl.handle.net/10754/628061
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When a shock interacts with a bubble having a different density than the environment or medium, the interaction causes compression and deformation of the bubble and generation of a vortex pair. Later, secondary vortices appear causing enhanced mixing. The enhanced mixing induced by the shock bubble interactions is particularly of interest in supersonic combustion and detonation. The Wavelet Adaptive Multi-resolution Representation (WAMR) method is particularly suitable for challenging continuum physics problems like shock bubble interaction, which has strong multi-scale character. This method provides an efficient strategy to create a dynamically adaptive spatial grid and to obtain a verified solution. Since the wavelet amplitude provides a first-hand estimate of the local error at each point, the method is able to efficiently capture a wide spectrum of spatial scales by dynamically changing the adaptive grid. Highly resolved computations are done only in the regions where abrupt transition occurs. In this work a detailed investigation of Shock Bubble Interaction (SBI) is carried out using shocks having Mach numbers from 1.2 to 3 for helium, nitrogen and krypton bubbles. Simulations carried out using WAMR method were used to analyze the effects of Mach number and density contrast on the shape, location and velocity of the bubble as well as vorticity and pressure in the flow field.Citation
Dhopeshwar, R. (2018). Numerical Investigation of Shock Bubble Interaction using Wavelet Adaptive Multi-Resolution Method. KAUST Research Repository. https://doi.org/10.25781/KAUST-18Y47ae974a485f413a2113503eed53cd6c53
10.25781/KAUST-18Y47