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https://hdl.handle.net/2142/83384
Description
Title
Analysis and Modeling of Plunging Flows
Author(s)
Dai, Hsi-Heng
Issue Date
2008
Doctoral Committee Chair(s)
Garcia, Marcelo H.
Department of Study
Civil Engineering
Discipline
Civil Engineering
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Engineering, Civil
Language
eng
Abstract
To extend the knowledge gained to this point to the field observations, we found that the plunging flows in the field could be different from those in current theoretical and laboratory scale modeling. In particular, two unusual and speculated observations drew our attention: Fleenor and Schladow (2000) reported an exceptionally high initial mixing coefficient and Best et al. (2005) observed a shifting plunge line and pulsing underflows in the field. In this research, we developed a theoretical model, an interplay between the flow momentum upstream of the plunge line and the turbulent Rayleigh-Taylor instability, to offer rational explanations for these two special observations.
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