Investigation of Upwind Schemes for Finite Element Analysis of Transonic Flow Over Thin Airfoils.

Abstract

Two finite element upwind techniques were investigated to see if convergent solutions could be obtained from the transonic potential equation for steady flow over thin airfoils. The first technique involves the use of parabolic upwind functions, that when added to the shape functions weight the upstream node in the supersonic region more than the downwind nodes. The second technique integrates the finite element equations over the area that influences the solution (i.e., the area inside a mach cone). (Author)

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1981
Accession Number
ADA111168

Entities

People

  • Dennis L. Hunt

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • C4I
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Computational Fluid Dynamics
  • Computational Science
  • Differential Equations
  • Equations
  • Far Field
  • Finite Element Analysis
  • Flow
  • Flow Fields
  • Fluid Flow
  • Leading Edges
  • Mach Number
  • Partial Differential Equations
  • Pressure Distribution
  • Steady Flow
  • Supersonic Flow
  • Transonic Flow

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Computational Fluid Dynamics (CFD)
  • Linear Algebra

Technology Areas

  • Hypersonics