Improved Numerical Prediction of Transonic Flow.

Abstract

The time dependent Navier Stokes computational technique has been in general use to predict transonic flows over projectiles. Recently, efforts have been made to improve the computational efficiency of this code by analyzing and including a spatially varying time step and various improved artificial dissipation models. The combined effect of these changes has led to a significant gain in the robustness and convergence characteristics for steady state applications. These techniques have been used to compute the practical problem of flow over a projectile at a transonic speed. The results confirm the improvements achieved for such calculations. Keywords: Steady state; Transonic flow; Varying time step; Navier Stokes equations; Dissipation models.

Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1987
Accession Number
ADA182250

Entities

People

  • Charles J. Nietubicz
  • Jubaraj Sahu

Organizations

  • Ballistic Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Convergence
  • Dissipation
  • Efficiency
  • Equations
  • Flow
  • Navier Stokes Equations
  • Projectiles
  • Steady State
  • Transonic Flow

Fields of Study

  • Physics

Readers

  • Computational Fluid Dynamics (CFD)
  • Fluid Dynamics.