A multienvironment conditional probability density function model for turbulent reacting flows

On Fokker-Planck Equations for Turbulent Reacting Flows. Part 1. Probability Density Function for Reynolds-Averaged Navier–Stokes Equations

The accurate treatment of finite-rate chemistry is possible by the application of stochastic turbulence models which generalize Reynolds-averaged Navier–Stokes equations. Usually, one considers linear stochastic equations. In this way, fluctuations are generated by uncorrelated forces and relax with a frequency that is independent of the actual fluctuation. It has been proved that such linear e...

Filtered Density Function for Large Eddy Simulation of Turbulent Reacting Flows on Unstructured Meshes

Application of the velocity-dissipation probability density function model to inhomogeneous turbulent flows

Recently Pope and Chen [ Phys. Fluids A 2, 1437 ( 1990) ] developed a turbulence model based on the one-point Eulerian joint probability density function (pdf) of velocity and dissipation. The modeling is performed by constructing stochastic processes for the velocity and dissipation following fluid particles. In the original work, these models were constructed by reference to the known statist...

Calculations of subsonic and supersonic turbulent reacting mixing layers using probability density function methods

A particle method applying the probability density function ~PDF! approach to turbulent compressible reacting flows is presented. The method is applied to low and high Mach number reacting plane mixing layers. Good agreement is obtained between the model calculations and the available experimental data. The PDF equation is solved using a Lagrangian Monte Carlo method. To represent the effects o...

Large-Eddy Simulation of Turbulent Reacting Flows

Numerical simulations of combustion in aircraft engines is quite complex, as it requires an adequate description of liquid fuel injection, liquid fuel atomization, drop breakup, drop dynamics, and evaporation, large-scale turbulent fuel air mixing, small scale molecular fuel air mixing, chemical reactions, and turbulence/chemistry interactions. In the present paper, we have identified three of ...