An eddy-viscosity based, subgrid-scale model for large eddy simulations is derived from the
analysis of the singular values of the resolved velocity gradient tensor. The proposed σ …

This article explores the possibility of analyzing combustion instabilities in liquid rocket
engines by making use of Large Eddy Simulations (LES). Calculations are carried out for a …

This paper investigates one issue related to Large Eddy Simulation (LES) of self-excited
combustion instabilities in gas-fueled swirled burners: the effects of incomplete mixing …

While most academic set ups used to study combustion instabilities are limited to single
burners and are submitted mainly to longitudinal acoustic modes, real gas turbines exhibit …

Being able to ignite or reignite a gas turbine engine in a cold and rarefied atmosphere is a
critical issue for many manufacturers. From a fundamental point of view, the ignition of the …

The objectives of this paper are the description of azimuthal instability modes found in
annular combustion chambers using two numerical tools:(1) Large Eddy Simulation (LES) …

Nitric oxide formation in gas turbine combustion depends on four key factors: flame
stabilization, heat transfer, fuel–air mixing and combustion instability. The design of modern …

Large-Eddy Simulation (LES) has been used to analyze the occurrence and the causes of
cycle-to-cycle combustion variations in a spark ignited four-valve single cylinder engine …

Internal combustion engine simulations are commonly performed using the RANS
(Reynolds averaged Navier–Stokes) approach. It gives a correct estimates of global …

Using 15 LES cycles of a high load/low speed spark ignition engine operating point, two
different fresh gases autoignition regimes called knock and super-knock are analyzed. A …