Large eddy simulation of homogeneous isotropic turbulence

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Large eddy simulation of homogeneous isotropic turbulence


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Title: Large eddy simulation of homogeneous isotropic turbulence
Author: Zeigler, Harald Bergersen
Date: 02-Jun-2008
Type: Master thesis; Mastergradsoppgave
Abstract: The theme for the master thesis is simulation of homogeneous, isotropic turbulence. I have shown that the energy of the velocity field is decaying in time, but the comparison to the reference solution is however invalid, due to the fact that the reference solution may have scalings that are not obvious to the observer, and that my own simulation results seemed to behave quite strange, with a sudden fall of energy in the first time-steps, which I have no explanation for why happened. The thesis consists of a rather large theory section and a smaller discussion in the end. Chapters 3 and 4 are mainly introductory and addressing the theme and job description. They also serve as mild introductions to tuirbulence theory as well as mathematical, numerical subjects. Overall, the reader is assumed not to be very familiar with mathematical terms, applied mathematics and physics, so many terms are explained. The provided theory is designed to teach a reader totally unfamiliar with science some things, but not all. The author has not forgot about the experienced reader who may be an expert in the field, and the level of the thesis should be high enough for that person also to maintain interest while reading.
Publisher: Universitetet i Tromsø; University of Tromsø

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