Numerical modeling and simulation of compressible reacting turbulent shear layers

Numerical modeling and simulation of compressible reacting turbulent shear layers are considered. In the numerical modeling portion of this work, improved turbulent transport models for compressible shear layers are presented and validated with detailed experimental data. The new compressible models are one-equation and two-equation algebraic Reynolds stress models (ASMs), which account for variations in the anisotropy of the normal stresses through modification of the pressure-strain terms of the Reynolds stress transport equations. In contrast to previous models, the compressible ASMs correctly predict the experimentally observed increase in turbulence anisotropy with increasing compressibility, as well as the reduction in the normalized shear layer growth rate. The effects of compressibility on the transport and mixing of a passive scalar are also considered. Finally, reacting compressible turbulent shear layer modeling results are presented. An assumed probability density function (PDF) turbulent H$\sb2$-air combustion model is implemented and demonstrated using three forms of PDFs. For comparison, 9-species, 18-reaction finite-rate and equilibrium calculations are also presented. The importance of modeling unmixedness and its effect on chemical reaction and heat release are clearly illustrated. The above models are developed and validated in a new parabolized Navier-Stokes (PNS) code.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Mechanical Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2011

Author dc:creator

• Burr, Ronald Frederick

Contributors dc:contributor

• Dutton, J. Craig

• Engineering, Mechanical

Statement dc:rights

• Copyright 1991 Burr, Ronald Frederick

Language dc:language

eng

Identifier

AAI9136558
(UMI)AAI9136558

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/21342