Global PNS (Parabolized Navier-Stokes) Solutions for Laminar and Turbulent Flow.

Abstract

A multi-sweep relaxation procedure is applied for inviscid and parabolized (pressure-elliptic) Navier-Stokes (PNS) equations. Boattail, finite flat plate and NASA 0012 airfoil geometries are considered for incompressible and subsonic inviscid, laminar and turbulent flow. The equations are written in a conformal body-fitted coordinate frame and differenced on a staggered grid in order to give second-order accuracy for the inviscid flow and somewhere between first and second-order accuracy for the PNS solutions. A full second-order scheme is also discussed. Separation, trailing edge and stagnation point flow are evaluated. The effects of normal pressure gradients for laminar and turbulent flows are compared. A multi-grid procedure is applied in order to speed convergence rates for fine meshes and/or large computational domains. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1983
Accession Number
ADA137829

Entities

People

  • D. R. Reddy
  • S. G. Rubin

Organizations

  • University of Cincinnati

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Boundary Layer
  • Computational Fluid Dynamics
  • Difference Equations
  • Equations
  • Flow
  • Fluid Dynamics
  • Fluid Flow
  • Geometry
  • Grids
  • Hydrodynamics
  • Incompressible Flow
  • Inviscid Flow
  • Mach Number
  • Mechanics
  • Pressure Gradients
  • Stagnation Point
  • Turbulent Flow

Fields of Study

  • Physics

Readers

  • Combustion and Flow Dynamics.
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)