Quasi-2D Unsteady Flow Procedure for Real Fluids

Abstract

Details of the numerical solution techniques, including explicit, point-implicit, and fully implicit schemes, used in a new quasi two-dimensional procedure for the transient solution of real fluids in system lines and volumes are presented. The procedure is coupled with a real-fluid properties database so that both compressible and incompressible fluids may be considered using the same code. The procedure has been implemented in Matlab/Simulink(R) as well as Fortran95 to allow for application on a wide variety of computer platforms. The computational efficiency of the various numerical methods is discussed to aid in selection for specific applications. Results for the transient flows of gaseous nitrogen and water in a pipe are presented to demonstrate the capability of the current techniques and the unsteady flow physics that can occur in system lines.

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Document Details

Document Type
Technical Report
Publication Date
Nov 02, 2005
Accession Number
ADA450905

Entities

People

  • Bryan Campbell
  • Roger Davis

Organizations

  • Aerojet Rocketdyne Holdings

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Computational Fluid Dynamics
  • Databases
  • Differential Equations
  • Equations
  • Flow
  • Fluid Dynamics
  • Fluid Flow
  • Frequency
  • Heat Transfer
  • Hydrodynamics
  • Nitrogen
  • Steady Flow
  • Two Dimensional
  • Unsteady Flow
  • Viscous Flow

Fields of Study

  • Physics

Readers

  • Computational Fluid Dynamics (CFD)
  • Computer Science.
  • Fluid Dynamics.