Type
Text
Type
Dissertation
Advisor
Xiangmin Jiao | Xiaolin Li. James Glimm. | Foluso Ladeinde.
Date
2011-05-01
Keywords
AMR, CFD, front tracking | Applied Mathematics
Department
Department of Applied Mathematics and Statistics
Language
en_US
Source
This work is sponsored by the Stony Brook University Graduate School in compliance with the requirements for completion of degree.
Identifier
http://hdl.handle.net/11401/71603
Publisher
The Graduate School, Stony Brook University: Stony Brook, NY.
Format
application/pdf
Abstract
Multi component fluid instability problems suffer artificial mass diffusion when numerical methods do not correct for numerical dissipation at an interface. Front tracking provides a sharp interface between components but can be computationally intensive. Adaptive mesh refinement (AMR) is a method of increasing resolution only where needed, which can be more computationally efficient. Under certain conditions AMR can achieve a high resolution numerical solution that would be otherwise unattainable on a uniform grid. In this thesis, we combine front tracking and AMR and apply the new algorithm to fluid mixing problems. A series of timed simulations show that this algorithm can be faster then uniform grid front tracking. The front tracked interface is less diffuse than an AMR calculation at equivalent resolution without front tracking. These results show that combining AMR and front tracking is feasible and the strengths of both methods are retained. The combined algorithm assumes front information resides only at the finest level, simplifying the code and easing the way for future modifications.
Recommended Citation
Fix, Brian, "Front Tracking and Adaptive Mesh Refinement" (2011). Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions). 808.
https://commons.library.stonybrook.edu/stony-brook-theses-and-dissertations-collection/808