Advancement and Application of Multi-Phase CFD Modeling to High Speed Supercavitating Flows

Abstract

In this work, we present insight on the internal gaseous flow of artificially ventilated supercavities. Using multiphase computational fluid dynamics, the major mechanism of gas leakage from a ventilated supercavity is identified as occurring though gaseous shear layers forming at the gas-water interface. These observations corroborate previous theory developed for toroidal cavities, and display evidence that shear-layer mechanisms remain important for twin-vortex cavities and cavities interacting with bodies. Additionally, shear mechanisms appear to influence cavity hysteresis behavior. These observations are used to guide improved supercavitating-vehicle analyses including numerical predictions, experiments, and modeling.

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Document Details

Document Type
Technical Report
Publication Date
Aug 13, 2013
Accession Number
ADA588597

Entities

People

  • Jules W. Lindau
  • Michael Kinzel

Organizations

  • Pennsylvania State University

Tags

Communities of Interest

  • Air Platforms
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Air Entrainment
  • Boundary Layer
  • Computational Fluid Dynamics
  • Computational Science
  • Flow
  • Fluid Dynamics
  • Fluid Flow
  • Froude Number
  • Gas Flow
  • Hulls (Marine)
  • Physics
  • Pressure Gradients
  • Reynolds Number
  • Three Dimensional
  • Turbulence
  • Turbulent Mixing

Readers

  • Computational Fluid Dynamics (CFD)
  • Fluid Mechanics and Fluid Dynamics.
  • Marine Propulsion Engineering and Naval Architecture