Entrainment and flow field generated by a variable density axisymmetric impinging jet in atmospheric induction burners - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Chapitre D'ouvrage Année : 2000

Entrainment and flow field generated by a variable density axisymmetric impinging jet in atmospheric induction burners

Résumé

Optimised combustion in atmospheric induction burners of gas stove units is determined by the quality of the mixing and the structure of the dynamic field. These parameters are fixed by the geometry of the burner and also the excess momentum of the jet which creates an entrainment force. Velocity measurements (LDA and PIV) are performed on different jet configurations, from free to confined impinging jets. The effect of the confinement ratio, impinging distance, and of the density ratio are discussed and compared with the real domestic burner configuration. The flow field inside an atmospheric induction burner was found to be well described by a confined impinging axisymmetric jet, either turbulent or laminar, depending on the flow rate injected. The main parameters influencing the entrainment process are the density ratio and the distance to the stagnation plate. An optimum is deduced for a distance around ten jet diameters and light jets appear to drive more air than isodensity jets. Furthermore entrainment has been found to be enhanced by impingement, through pressure gradient effect.
Fichier non déposé

Dates et versions

hal-04173977 , version 1 (31-07-2023)

Identifiants

  • HAL Id : hal-04173977 , version 1

Citer

I. Serres, C. Chauveau, B. Sarh, I. Gökalp. Entrainment and flow field generated by a variable density axisymmetric impinging jet in atmospheric induction burners. Industrial Furnaces and Boilers, 1, pp.245-254, 2000. ⟨hal-04173977⟩
10 Consultations
0 Téléchargements

Partager

Gmail Facebook X LinkedIn More