Computational Investigation of Geophysical Flows
Rechnergestützte Untersuchung geophysischer Strömungen.
- Turbidity currents play a significant role within the global sediment cycle, and are important for environmental processes as well as the formation of hydrocarbon reservoirs. A special kind of turbidity currents are tubidity currents with reversing buoy- ancy. Hyperpycnal flows are one kind of turbidity currents with reversing buoyancy. There exist numerous experimental studies of these flows but no simulations. This thesis deals with reversing-buoyancy turbidity currents. The propagation of the flow front over time and the later lift-off are investigated on the basis of the results from Sparks et al. (1993). Furthermore the interaction of the current with obstacles is analyzed by means of the work from Stevenson & Peakall (2010). Hereby a closer look at deposit patterns caused by various obstacle positions and dimensions, is taken. Towards this end a highly parallel three-dimensional Navier-Stokes Direct Numerical Simulation code is used.
Author: | Erik Lenk |
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Advisor: | Helmut EichertGND, Eckart Meiburg, Radhakrishnan Senthilkumaran |
Document Type: | Master's Thesis |
Language: | English |
Name: | University of California Santa Barbara Santa Barbara, CA 93106-5070, Department of Mechanical Engineering, Engineering II, Building 503, 93106 Santa Barbara |
Date of Publication (online): | 2013/01/16 |
Year of first Publication: | 2013 |
Publishing Institution: | Westsächsische Hochschule Zwickau |
Date of final exam: | 2013/01/15 |
Tag: | Deposition Patterns; Hyperpycnal Flows; Interaction Obstacle Deposition Patterns; Hyperpycnal Flows; Interaction Obstacle |
GND Keyword: | Suspensionsströmung; Numerische Strömungssimulation; Fluviale Sedimentation |
Page Number: | 50 Seiten, 15 Abb., 5 Tab., 44 Lit. |
Faculty: | Westsächsische Hochschule Zwickau / Maschinenbau und Kraftfahrzeugtechnik (bis 2018) |
Release Date: | 2013/01/16 |