12 research outputs found
Stochastic modeling of atomizing spray in a complex swirl injector using large eddy simulation
International audienc
Unsteady Flow Evolution in Porous Chamber with Surface Mass Injection, Part 1: Free Oscillation
Increased transfer of iron to the fetus after total dose infusion of iron dextran during pregnancy.
Investigation of Two-Fluid Methods for Large Eddy Simulation of Spray Combustion in Gas Turbines
International audienceAn extension of the large eddy simulation (LES) technique to two-phase reacting flows, required to capture and predict the behavior of industrial burners, is presented. While most efforts reported in the literature to construct LES solvers for two-phase flow focus on EulerâLagrange formulation, the present work explores a different solution (âtwo-fluidâ approach) where an Eulerian formulation is used for the liquid phase and coupled with the LES solver of the gas phase. The equations used for each phase and the coupling terms are presented before describing validation in two simple cases which gather some of the specificities of real combustion chamber: (1) a one-dimensional laminar JP10/air flame and (2) a non-reacting swirled flow where solid particles disperse (Sommerfeld and Qiu, Int. J. Multiphase Flow 19(6):1093â1127, 1993). After these validations, the LES tool is applied to a realistic aircraft combustion chamber to study both a steady flame regime and an ignition sequence by a spark. Results bring new insights into the physics of these complex flames and demonstrate the capabilities of two-fluid LES