Modeling Approach for Reducing Helmholtz Resonance in Submarine Structures

Abstract

This paper discusses CFD technology capable of predicting the occurrence of Helmholtz resonance in surface openings of underwater vehicles. An examination of the numerical issues involved in the prediction is discussed - numerical dissipation, turbulence modeling and their interplay are analyzed through detailed parametric simulations. Further, control of such resonance through the use of passive devices is analyzed. Interesting parallels are observed between resonant flow field behavior in a compressible fluid and the behavior in an incompressible setting with no resonance. This suggests the interesting possibility of controlling resonant flow fields through analysis of corresponding incompressible flow fields.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2005
Accession Number
ADA458237

Entities

People

  • N. Sinha
  • S. Arunajatesan

Tags

Communities of Interest

  • Energy and Power Technologies
  • Ground and Sea Platforms
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Boundary Layer
  • Computational Fluid Dynamics
  • Flow Fields
  • Fluid Dynamics
  • Fluid Flow
  • Free Stream
  • Frequency
  • Hydrodynamics
  • Incompressible Flow
  • Large Eddy Simulation
  • Measurement
  • Naval Vessels
  • Resonance
  • Stratified Fluids
  • Turbulent Mixing
  • Underwater Vehicles
  • Viscous Flow

Readers

  • Acoustical Oceanography.
  • Fluid Dynamics.
  • Systems Analysis and Design