Subgrid-scale model for the temperature fluctuations in reacting hypersonic turbulent flows
- 1 September 1999
- journal article
- research article
- Published by AIP Publishing in Physics of Fluids
- Vol. 11 (9), 2765-2771
- https://doi.org/10.1063/1.870135
Abstract
A direct numerical simulation (DNS) database is used to develop a model of subgrid-scale temperature fluctuations for use in large-eddy simulations of turbulent, reacting hypersonic flows. The proposed model uses a probability density representation of the temperature fluctuations. The DNS database reveals a physically consistent relation between the resolved-scale flow conditions that may be used to predict the standard deviation of the Gaussian probability density function (PDF). The model is calibrated and tested by comparison to simulations of decaying isotropic turbulence. The conditional single-variable PDF model is found to capture the fluctuations in temperature and product formation.Keywords
This publication has 17 references indexed in Scilit:
- A laminar flamelet approach to subgrid-scale chemistry in turbulent flowsCombustion and Flame, 1997
- Monte Carlo PDF modelling of a turbulent natural-gas diffusion flameCombustion Theory and Modelling, 1997
- Evaluation of the dynamic model for simulations of compressible decaying isotropic turbulenceAIAA Journal, 1996
- A dynamic localization model for large-eddy simulation of turbulent flowsJournal of Fluid Mechanics, 1995
- Modeling temperature and species fluctuations in turbulent, reacting flowComputing Systems in Engineering, 1994
- PDF approach and stochastic models of the turbulent mixing of inert and reactive statistically homogeneous scalar fieldsTransport Theory and Statistical Physics, 1994
- Compact finite difference schemes with spectral-like resolutionJournal of Computational Physics, 1992
- A proposed modification of the Germano subgrid-scale closure methodPhysics of Fluids A: Fluid Dynamics, 1992
- Direct numerical simulations of reacting flows in homogeneous turbulenceAIChE Journal, 1991
- PDF methods for turbulent reactive flowsProgress in Energy and Combustion Science, 1985