Non-newtonian effects on Richtmyer-Meshkov instabilities and shock-driven nuclear fusion target
File(s)
Author(s)
Matar, Omar
Type
Thesis or dissertation
Abstract
This PhD project aims to develop computational methods for studying non-Newtonian effects in highly compressible flows. The research is conducted within the context of clean energy applications that exploit fusion technology, which involves the rapid collapse of bubbles culminating in energy generation through nuclear fusion. The study examines interface-capturing methods: algebraic volume-of-fluid and a hy brid interface-tracking method called front-tracking. Several validation simulations involving shock-tube, bubble collapse, Richtmyer-Meshkov instabilities, and Kelvin Helmholtz instabilities are conducted to determine the relative merits of these meth ods. The focus of this comparison is on interface resolution, performance, and the
robustness of each technique. Additionally, the project explores non-Newtonian ef fects. The aim is to investigate how the non-Newtonian effects influence the evolu tion of vorticity, Richtmyer-Meshkov instabilities, and Kelvin-Helmholtz instabilities, as well as how the RMI and KHI impact the average density, pressure, and tempera ture in a Fusion Target.
robustness of each technique. Additionally, the project explores non-Newtonian ef fects. The aim is to investigate how the non-Newtonian effects influence the evolu tion of vorticity, Richtmyer-Meshkov instabilities, and Kelvin-Helmholtz instabilities, as well as how the RMI and KHI impact the average density, pressure, and tempera ture in a Fusion Target.
Version
Open Access
Date Issued
2024-04-26
Date Awarded
2024-09-01
Copyright Statement
Creative Commons Attribution NonCommercial NoDerivatives Licence
License URL
Advisor
Matar, Omar
Sponsor
First Light Fusin
Publisher Department
Chemical Engineering
Publisher Institution
Imperial College London
Qualification Level
Doctoral
Qualification Name
Doctor of Philosophy (PhD)