Date of Award
Spring 5-12-2022
Degree Type
Dissertation
Degree Name
Doctor of Philosophy (PhD)
School
Mathematics and Natural Sciences
Committee Chair
Dr. James V. Lambers
Committee Chair School
Mathematics and Natural Sciences
Committee Member 2
Dr. Julian Simeonov
Committee Member 3
Dr. Haiyan Tian
Committee Member 3 School
Mathematics and Natural Sciences
Committee Member 4
Dr. Huiqing Zhu
Committee Member 4 School
Mathematics and Natural Sciences
Committee Member 5
Dr. Zhifu Xie
Committee Member 5 School
Mathematics and Natural Sciences
Abstract
Currently, all forecasts of currents, waves, and seafloor evolution are limited by a lack of fundamental knowledge and the parameterization of small-scale processes at the seafloor-ocean interface. Commonly used Euler-Lagrange models for sediment transport require parameterizations of the drag and lift forces acting on the particles. However, current parameterizations for these forces only work for spherical particles. In this dissertation we propose a new method for predicting the drag and lift forces on arbitrarily shaped objects at arbitrary orientations with respect to the direction of flow that will ultimately provide models for predicting the sediment sorting processes that lead to the variability of shell fragments on inner shelf seafloors. We wish to develop the drag force parameterization specifically for a limpet shell through the linear regression of force estimated from high-fidelity Reynolds-averaged Navier-Stokes (RANS) simulations in OpenFOAM.
Recommended Citation
Walker, Carley R.; Lambers, James V.; and Simeonov, Julian, "A New Model for Predicting the Drag and Lift Forces of Turbulent Newtonian Flow on Arbitrarily Shaped Shells on the Seafloor" (2022). Dissertations. 1996.
https://aquila.usm.edu/dissertations/1996
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