Numerical modeling of compressible reacting turbulent shear layers

R. F. Burr, J. C. Dutton

Research output: Contribution to conferencePaper

Abstract

Numerical modeling of fully-developed compressible turbulent reacting shear layers is examined. Various existing turbulent transport models and an improved model for compressible shear layers are compared with experimental data. The new model is a modified one-equation algebraic stress model (ASM), which accounts for variations in the anisotropy of the normal stresses through modification of the pressure-strain terms of the Reynolds stress transport equations. Results from the proposed model agree well with recent detailed compressible mixing layer data. In contrast’ to previous models, the new model correctly predicts the changes in the turbulent velocity moments and the increase in turbulence anisotropy with increasing relative Mach number, as well as the reduction in the normalized shear layer growth rate. In addition, transport modeling of a passive scalar is considered, with particular emphasis placed on modeling the unmixedness. Reacting compressible turbulent shear layer results are also presented. An assumed probability density function (PDF) combustion model is implemented and demonstrated using two alternate forms of PDFs to account for turbulence-chemistry interaction. For comparison, 9-species, 18-reaction H2-air finite-rate and equilibrium calculations are also presented. This appears to be the first application of the assumed PDF technique to compressible planar mixing layers and the importance of modeling the unmixedness and turbulence-chemistry interaction is clearly illustrated.

Original languageEnglish (US)
StatePublished - Jan 1 1990
EventAIAA 21st Fluid Dynamics, Plasma Dynamics and Lasers Conference, 1990 - Seattle, United States
Duration: Jun 18 1990Jun 20 1990

Other

OtherAIAA 21st Fluid Dynamics, Plasma Dynamics and Lasers Conference, 1990
CountryUnited States
CitySeattle
Period6/18/906/20/90

ASJC Scopus subject areas

  • Aerospace Engineering
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Engineering (miscellaneous)

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    Burr, R. F., & Dutton, J. C. (1990). Numerical modeling of compressible reacting turbulent shear layers. Paper presented at AIAA 21st Fluid Dynamics, Plasma Dynamics and Lasers Conference, 1990, Seattle, United States.