Contribution to the study of spray formation
type: Dataset
description: The work of this thesis aims to provide and validate tools useful to study and understand the phenomena involved in the injection of fuel, mainly focused on intra-flow injector. These tools are numeric and simulate the formation of a spray. A first part focuses on zero-dimensional modelling. Models which predict these following characteristics of spray like the spray angle, the spray penetration or the liquid length are compared with experimental data. The conclusions are that zero-dimensional modelling provides good results very quickly in some cases. Although, a better understanding of the influence of cavitation on the spray, which requires an understanding of the intra-flow injector, could be beneficial for the prediction of these models. A second study is carried out to select a model of multi-dimensional cavitation. The chosen model is a barotropic equation model. A validation of this model is then performed to ensure that it is able to predict the cavitating flow inside a nozzle. The model provides good results and can be used for the next step. Finally, in the third part, the cavitation model previously validated is used. Single-hole nozzle geometry is used with an injection pressure comparable to that used in internal combustion engines with direct injection system. The study is done to investigate the influence of several geometrical parameters on the onset of cavitation. The movement of the needle is also studied and compared, after offering to the code the possibility of moving mesh, to the results of several stationary needle lifts.
identifier: NNT: 2012DIJOS079
issued: 2026-05-09T11:54:40.391197
language: fr
modified: 2026-05-09T11:54:40.391204
contact point: Organization
  fn: CCSD
keyword: 0d-modelling
keyword: 3d-modelling
keyword: atomisation
keyword: cavitation
keyword: energetique
keyword: infoeu-reposemanticsdoctoralthesis
keyword: injection
keyword: intra-injecteur
keyword: intra-injector
keyword: maillage-mobile
keyword: mathmath-gmmathematics-mathgeneral-mathematics-mathgm
keyword: mfncfd
keyword: modelisation
keyword: moving-mesh
keyword: openfoam
keyword: physcondcm-genphysics-physicscondensed-matter-cond-matother-cond-matother
keyword: spiotherengineering-sciences-physicsother
keyword: spray
keyword: theses
landing page: https://theses.hal.science/tel-00869635

Contribution to the study of spray formation
type: Distribution
format: HTML
issued: 2026-05-09T11:54:40.431889
modified: 2026-05-09T11:54:40.358979
access URL: https://theses.hal.science/tel-00869635

test_moissonnage_selune
type: Agent