Simulation of Massively Separated Flow Around a Missile at Angle of Attack Using Solution-Adaptive Re-Meshing.

Abstract

Simulation of massively separated flow around a missile at various angle of attack using solution adaptive remeshing is performed. These simulations are exercised in support of the KTA2-12 program which is designed to evaluate computational technology for predicting highly separated flow fields for missile configurations. A new weight function using Boolean sum of pertinent solution gradient and curvature terms with appropriate scaling and normalization is developed. The new weight function is applicable to wide range of grid adaptive problems with no user input. The adaptive algorithms have been cast into a parallel multiblock adaptive grid system using MPI. The improvement in the convergence level and better agreement of flow solutions with experimental force and moment coefficients with flow solutions have been demonstrated by using the adaptive process. The computer codes NPARC and CFL3D are utilized for respective flow field simulations.

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Document Details

Document Type
Technical Report
Publication Date
Apr 15, 1997
Accession Number
ADA324828

Entities

People

  • Bharat K. Soni

Organizations

  • Mississippi State University

Tags

Communities of Interest

  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Air Force
  • Algorithms
  • Boolean Algebra
  • Boundary Layer
  • Computational Fluid Dynamics
  • Computers
  • Flow
  • Flow Fields
  • Flow Visualization
  • Fluid Dynamics
  • Geometry
  • Simulations
  • Statistical Analysis
  • Three Dimensional
  • Turbulent Mixing
  • Viscous Flow

Readers

  • Computational Fluid Dynamics (CFD)
  • Fluid Dynamics.