Analysis of the initiation and development of autoignition after a rapid compression of a turbulent reactive mixture : Application to the context of CAI/HCCI
type: Dataset
description: Combustion by autoignition of a homogeneous charge aims at reducing particulate matter as well as NOx emissions, while maintaining higher thermal efficiency of conventional diesel engines. To control this new mode of combustion, a fine understanding of the mechanisms of coupling between aerodynamics and thermochemistry is required. Direct Numerical Simulations of a turbulent reactive flow, undergoing a compression, have been performed. This study led to identification of two regimes. The first, known as quasi-homogeneous, is characterized by volumetric autoignition of large zones of the reactive mixture and results in the generation of strong pressure waves, which are potentially dangerous for the structure of engines. In the second regime, called localized, hot spots are initiated more sporadically in space and time, and their topology is such that no significant pressure wave is generated.
identifier: NNT: 2013ISAM0008
issued: 2026-05-10T09:29:27.717201
language: fr
modified: 2026-05-10T09:29:27.717206
contact point: Organization
  fn: CCSD
keyword: auto-inflammation
keyword: chimie-tabulee
keyword: combustion-by-autoignition
keyword: combustion-turbulente
keyword: diagramme-des-regimes-dauto-inflammation
keyword: direct-numerical-simulations
keyword: infoeu-reposemanticsdoctoralthesis
keyword: physcondcm-genphysics-physicscondensed-matter-cond-matother-cond-matother
keyword: simulation-numerique-directe
keyword: thermochemistry
keyword: theses
keyword: turbulent-reactive-flow
landing page: https://theses.hal.science/tel-00843595

Analysis of the initiation and development of autoignition after a rapid compression of a turbulent reactive mixture : Application to the context of CAI/HCCI
type: Distribution
format: HTML
issued: 2026-05-10T09:29:27.721535
modified: 2026-05-10T09:29:27.703221
access URL: https://theses.hal.science/tel-00843595

test_moissonnage_selune
type: Agent