Molecular mixing in a turbulent flow: some fundamental considerations

WA Sirignano - Combustion science and technology, 1987 - Taylor & Francis
A transport or evolution equation for the joint PDF of a reacting scalar and the gradient of
that scalar is developed and presented. The derivation clearly indicates the relationship …

A linear-eddy model of turbulent scalar transport and mixing

AR Kerstein - Combustion Science and Technology, 1988 - Taylor & Francis
Transport and mixing of diffusive scalars in turbulent flows are simulated computationally
based on a novel representation of the temporal evolution along a transverse line moving …

Inter-layer diffusion model of scalar mixing in homogeneous turbulence

FA Jaberi, P Givi - Combustion science and technology, 1995 - Taylor & Francis
ABSTRACT A field-parametrized model termed the Inter-Layer Diffusion Model (ILDM) is
developed and is implemented for the probabilistic description of scalar mixing in …

Turbulent mixing in systems with simple reactions

EE O'Brien - Turbulent Mixing in Nonreactive and Reactive Flows, 1975 - Springer
The additional complexities that chemically reacting species bring to turbulently mixed
scalar fields may be of several kinds. If the reaction is strongly exothermic, the thermal field …

PDF approach and stochastic models of the turbulent mixing of inert and reactive statistically homogeneous scalar fields

C Dopazo, L Valiño - Transport Theory and Statistical Physics, 1994 - Taylor & Francis
The turbulent mixing of both inert and reactive scalar fields is investigated. Single-point
moment formulations outline the closure problems related to the molecular diffusion and the …

The joint pdf of a scalar and its gradient at a point in a turbulent fluid

RE Meyers, EE O'brien - Combustion Science and Technology, 1981 - Taylor & Francis
A closed model equation is derived which describes the evolution of the single-point, joint
probability density function of a reacting scalar and its gradient in a turbulent advection field …

The effect of turbulence on mixing in prototype reaction‐diffusion systems

A Majda, P Souganidis - … on Pure and Applied Mathematics: A …, 2000 - Wiley Online Library
The effect of turbulence on mixing in prototype reaction‐diffusion systems is analyzed here
in the special situation where the turbulence is modeled ideally with two separated scales …

[图书][B] PDF models for mixing in turbulent reactive flows

S Subramaniam - 1997 - search.proquest.com
In modeling turbulent reactive flows based on the transport equation for the joint probability
density function (PDF) of velocity and composition, the change in fluid composition due to …

Mapping closures for turbulent mixing and reaction

SB Pope - Theoretical and Computational Fluid Dynamics, 1991 - Springer
The mapping closure for the one-point pdf of an inert scalar in homogeneous turbulence is
explained and developed. It is shown that the pdf's calculated from the closure are in …

A simple recipe for modeling reaction-rate in flows with turbulent-combustion

S Girimaji - 22nd Fluid Dynamics, Plasma Dynamics and Lasers …, 1991 - arc.aiaa.org
In this paper we present a computationally viable scheme to account for chemical reaction in
turbulent flows. The multivariate a· pdf model for multiple scalar nuxing (Girimaji 1991 …