One Type of Automatically Adjusted Difference Scheme with Artificial Viscosity to Calculate Ablated Exterior Shapes

Abstract

In the calculation of the exterior form of ablated reentry nose tips, through automatic wave filter processing with reference to the shape of the object, a type of explicit difference scheme with added artificial viscosity quantities was created. This type of scheme reaches first order accuracy in areas where shape change is wavy and second order accuracy in areas where it is smooth. Tests with numerical values clearly show that this type of method is effective in guaranteeing the accuracy of exterior shape calculations, enlarging time increments and saving computer time.

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Document Details

Document Type
Technical Report
Publication Date
Jan 17, 1992
Accession Number
ADA254108

Entities

People

  • Maozhao Yang

Organizations

  • National Air and Space Intelligence Center

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Coordinate Systems
  • Differential Equations
  • Equations
  • Foreign Technology
  • Grids
  • Heat Transmission
  • Materials
  • Nose Tips
  • Noses
  • Partial Differential Equations
  • Roughness
  • Surface Roughness
  • Three Dimensional
  • Translations
  • Viscosity

Readers

  • Computer Vision.
  • Fluid Dynamics.
  • Systems Analysis and Design