DOI: 10.1615/TSFP5
ASSESSMENT OF A CONDITIONAL PDF-TRANSPORT METHOD IN THE COMBUSTION-LES CONTEXT
ABSTRACT
The aim of this work is to combine Large-Eddy-
Simulation (LES) and the PDF-transport method for the
prediction of turbulent non-premixed flames. On the one
hand the motivation is based upon the property of LES to
provide a better description of complex flows than RANS
(Reynolds-Averaged-Navier-Stokes) methods offer. On the
other hand PDF-methods allow for exact treatment of the
chemical source term, which provides a possibility to describe strong turbulence-chemistry interaction considering chemical time scales with equal or greater magnitude compared to the turbulent time scales.
The intent of this work is to combine the ability of the LES to predict scalar mixing with high accuracy and the property of PDF transport methods to describe the chemical source term in a closed form.