Accession Number:

ADA181429

Title:

Fast Algorithm Development for Large-Eddy Simulation of Circular-Jet Turbulence.

Descriptive Note:

Annual technical rept. no. 1, 1 Sep 85-14 Oct 86,

Corporate Author:

DAYTON UNIV OH RESEARCH INST

Report Date:

1986-12-01

Pagination or Media Count:

25.0

Abstract:

This research project deals with the computational fluid dynamic investigation of the turbulent mixing layers of several prototype circular-jet configurations. The predictive research addressed the large-eddy simulation computations for the large-scale motions and the subgrid-scale turbulence models for the small-scale motions in the near field downstream of an axisymmetric nozzle. The initial attention is focused on the single free jet expanding into a quiescent environment, with the emphasis on two-dimensional computations and one-point closure models. The numerical algorithm development has examined the applicability of a variable reduction method, and the simulation of a sustained unsteady motion through weighted combinations of stable and unstable schemes.

Subject Categories:

  • Fluid Mechanics
  • Numerical Mathematics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE