An Approach to Model Partially Premixed Turbulent Combustion withProbability Density Function (PDF) Methods

Pdf Simulation of Premixed Combustion in Turbulent Flows

PDF modeling and simulation of premixed turbulent combustion

The use of probability density function (PDF) methods for turbulent combustion simulations is very attractive because arbitrary finite-rate chemistry can be exactly taken into account. PDF methods are well developed for non-premixed turbulent combustion. However, many real flames involve a variety of mixing regimes (non-premixed, partially-premixed and premixed turbulent combustion), and the de...

Extended Variational Multiscale Methods for Turbulent Variable-density Flow at Low Mach Number and Premixed Combustion

Problems of combustion are usually mathematically described by a variabledensity formulation of the Navier-Stokes equations at low Mach number. Finite volume and finite difference methods have been proposed for large-eddy simulation (LES) of variable-density turbulent flows at low Mach number. Finite element methods, which are often better suited for problems in complex geometries, have so far ...

Pdf Methods for Combustion in High-speed Turbulent Flows

Simulation of Lean Premixed Turbulent Combustion

There is considerable technological interest in developing new fuel-flexible combustion systems that can burn fuels such as hydrogen or syngas. Lean premixed systems have the potential to burn these types of fuels with high efficiency and low NOx emissions due to reduced burnt gas temperatures. Although traditional scientific approaches based on theory and laboratory experiment have played esse...