Title page for ETD etd-03122013-040239

Type of Document Master's Thesis
Author Wells, Jared Lawrence
URN etd-03122013-040239
Title Effect of angular orientation on the hydrodynamic forces acting on a body in a restricted waterway
Degree Master of Science
Department Aerospace and Ocean Engineering
Advisory Committee
Advisor Name Title
Kaplan, Paul Committee Chair
Grossman, Bernard M. Committee Member
Neu, Wayne L. Committee Member
  • Yawing (Aerodynamics)
Date of Defense 1985-12-05
Availability restricted

A slender body theory method developed for a body moving parallel to a wall in shallow water is extended to include angular orientation of the body to the wall. The method satisfies only the zero normal velocity condition on the external boundaries but does not take into account the effect of induced flows on the body itself. A spheroid and a Series 60, block .80 hull were the bodies studied. The side force and yaw moment on each body were determined numerically for varying angular orientation with respect to either a single wall or canal bank. For both cases results for a range of depths and wall separation distances are presented. It is found that the method gives good qualitative side force predictions for a body moving parallel to a wall, but is unable to correctly predict the yaw moment or the side force due to angular orientation. This result dictates the need for a more complex mathematical model to properly represent the flow than the simple model and quasi—steady method used here.

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