Ecoulement à phase liquide dispersée : application à la modélisation de la combustion multiphasique dans les moteurs aéronautiques

Flow with a dispersed liquid phase: application to multiphase combustion in aeronautics engines

DMAE, ONERA/CERT

Abstract

Two-phase flow modelling in combustion chambers is based on the Euler-Lagrange approach, respectively for the continuous and dispersed phases. Different models linked to the behavior of a liquid fuel droplet have been developped, and integrated in a numerical simulation module. These models concern droplet turbulent dispersion, evaporation, droplet-wall interactions, secondary breakup, auto-ignition, and interactions between the two phases (liquid and gas). This two-phase flow module now permits to calculate numerous configurations, from ramjets to turboreactors, as well as for space propulsion, internal combustion engines, or any industrial burner. Several aspects have to be furthemore developped, and concern mainly atomisation and dense zones in two-phase flows.