Date of Award
Spring 5-2013
Degree Type
Honors College Thesis
Department
Physics and Astronomy
First Advisor
Michael Vera
Advisor Department
Physics and Astronomy
Abstract
Equivalent fluids use complex densities in place of realistic seafloor conditions to simplify simulations of acoustic interaction with the seafloor. This eliminates the computationally intensive attempts to simulate realistic seafloor interactions that include shear waves. A previous method used such equivalent fluids and was found to be accurate only for interaction with low grazing angles and low shear speeds. The current method expands by also parameterizing the speed of sound in the fluid, allowing higher grazing angles and shear speeds to be modeled with equivalent fluids. For a particular window of grazing angle, there are several approaches to determining the complex density and the fluid's speed of sound using this Expanded Equivalent Fluid. By calculating statistics and comparing acoustic simulation results, the approach that most accurately mimics the actual seafloor and the highest window of grazing angle at which the fluid yields respectable results are investigated.
Copyright
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Recommended Citation
Kirkup, Steven J., "Finding the Limitations of the Expanded Equivalent Fluid Approximation For Simulating Acoustic Interactions With the Ocean Bottom" (2013). Honors Theses. 109.
https://aquila.usm.edu/honors_theses/109