Evaluation and Additional Documentation of the Parabolic Marching Code Surfwake

Abstract

The capabilities of the parabolic marching code SURFWAKE for simulating the turbulent wake of a surface ship are evaluated for one set of experimental conditions. For the conditions considered, it is determined that the results from the code agree well with the results previously obtained with the code TWAKE when the rigid lid approximation to the free surface is used. When the linearized free surface boundary condition is used, the code gives poor simulations for the transverse velocities. Additional capabilities are added to the program and documented. The new capabilities permit the user greater flexibility in providing the input data required to initialize a turbulent wake simulation. For the conditions considered, the SURFWAKE code requires less computer time for the simulations than does the TWAKE code. The code has been executed for the given data on two computer systems with identical results to 4 significant figures for single precision compliations. Keywords: Turbulent ship wake; Finite difference calculations; Self propelled wake; SURFWAKE programmer's manual.

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Document Details

Document Type
Technical Report
Publication Date
Sep 22, 1988
Accession Number
ADA200321

Entities

People

  • Armin Troesch
  • E. W. Miner
  • Thomas F. Swean Jr.

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Boundaries
  • Computational Fluid Dynamics
  • Computer Programming
  • Computer Programs
  • Computers
  • Engineering
  • Equations
  • Experimental Data
  • Flow Fields
  • Fluid Dynamics
  • Kinetic Energy
  • Marine Engineering
  • Measurement
  • Naval Architecture
  • Self Propelled
  • Simulations
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Computer Science.
  • Fluid Mechanics and Fluid Dynamics.
  • Marine Hydrodynamics