RANS Analysis of Free-Surface and Bottom Effects on Axisymmetric RCMS

Abstract

The UNCLE Reynolds-averaged Navier-Stokes code is used to investigate free-surface and bottom effects on an axisymmetric radio-controlled submarine model. It is shown that the basin bottom and water surface have small but noticeable influences on the hydrodynamic vertical force and pitching moment on the body for typical depths of submergence. The influence of submergence depth and speed on the forces and moments is analyzed. It is shown that the presence of the water surface leads to vertical velocities near the stern that are consistent with sternplane deflections previously found necessary to keep appended models in straight and level motion.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 2000
Accession Number
ADA377941

Entities

People

  • Henry J. Haussling
  • Roderick M. Coleman

Organizations

  • Naval Surface Warfare Center Carderock Division

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Axisymmetric
  • Boundaries
  • Boundary Layer
  • Deflection
  • Flow
  • Frequency
  • Froude Number
  • Molecular Dynamics
  • Parallel Computing
  • Parallel Processing
  • Potential Flow
  • Pressure Distribution
  • Surface Properties
  • Surface Warfare
  • Surface Waves
  • Symmetry
  • Waves

Fields of Study

  • Physics

Readers

  • Computational Fluid Dynamics (CFD)
  • Marine Hydrodynamics