An Initial Assessment of Free Surface Effects on Surface Effects on Submerged Bodies.

Abstract

This thesis presents a study of free surface effects on submerged bodies. The motivation for this study lies in the significance of free surface suction effects during submarine operations at periscope depth. Such operations become increasingly important as new roles for the Navy in littoral waters are emerging. Particular emphasis is placed on computation of steady state forces on the body as a function of speed, depth, and wave frequency and direction. These forces constitute an important and very frequently limiting factor in establishing the periscope depth submerged operating envelope. Solution of the problem is accomplished by singularity distribution on the actual surface of the body and discretization in the form of plane quadrilateral elements. Parametric studies are conducted in order to assess the effects of body shape and size. The results of this thesis can be directly utilized in the simulation based design process as well as during training.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1994
Accession Number
ADA288546

Entities

People

  • Thomas P. Crook

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Computational Science
  • Computer Programs
  • Depth Control
  • Diffraction
  • Flow
  • Fluid Mechanics
  • Frequency
  • Froude Number
  • Geometric Forms
  • Geometry
  • Mechanical Engineering
  • Phase Velocity
  • Potential Flow
  • Pressure Distribution
  • Submarine Hulls
  • Submarines
  • United States Naval Academy

Readers

  • Computational Modeling and Simulation
  • Fluid Dynamics.
  • Naval Mine Countermeasure Systems Development.