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Title: Thermal instabilities in an evolving boundary layer at a single vertical wall
Author: Gumm, Zoe
Awarding Body: City University London
Current Institution: City, University of London
Date of Award: 2013
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In this research we look at the effects of heating a single vertical wall bounding a semi-infinite fluid. This investigation is based on a mathematical and numerical study of the equations that govern the fluid motion. Our main focus is on the study of thermal instabilities, the first stage in the breakdown of the smooth flow up the wall that may eventually lead to turbulence. In our research, a thermal instability is defined to be a growth in the disturbance energy by a set amount. Initially instabilities cannot develop and therefore the main aim of our research is to identify the time at which instabilities in our system begin to grow. This involves finding the most unstable initial conditions and looking at how the form of the instabilities change as the background flow evolves. By achieving this, we have obtained quantitative information regarding the onset of thermal instabilities which takes into account the time-dependent nature of the problem.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available