Regular Article

Modeling and numerical study of H₂/N₂ jet flame in vitiated co-flow using Eulerian PDF transport approach

¹ Faculté du Génie Mécanique, Université des Sciences et de la Technologie d'Oran Mohamed Boudiaf, BP. 1505 Elmenaouer, Oran 31000, Algeria
² Unité de Recherche en Energies renouvelables en Milieu Saharien, URERMS, Centre de Développement des Energies Renouvelables, CDER, 01000 Adrar, Alegria
³ Laboratoire des Sciences et Ingénierie Maritime (LSIM), Faculté du Génie Mécanique, Université des Sciences et de la Technologie d'Oran Mohamed Boudiaf, BP. 1505 Elmenaouer, Oran 31000, Algeria

^* e-mail: aminelarbi@hotmail.fr

Received: 20 December 2017
Accepted: 30 May 2018

Abstract

The multi-environment Eulerian approach (MEPDF) is the eulerian method to solve the PDF transport equations; it is considered a product of the delta function. Its advantages are the prediction of extinction and ignition of the flame, also the kinetic control of the species as CO and NOX. Even though the MEPDF approach has been improved in recent years, most improvements have been achieved with parametric study in order to investigate the impact of the model accuracy. The main objective of this work is to improve further the model accuracy, the prediction of the lift off height by a parametric study of the mixing constant and Schmidt number and to understand its impact in flame stabilization. The numerical investigation of H₂/N₂ jet flame in vitiated co-flow is presented using MEPDF approach. The study was applied with K-epsilon modified model of turbulence. The chosen mixture model is the IEM (Interaction by Exchange with the Mean). The number of environment in the multi-environment Eulerian approach MEPDF is (2.0). The model was solved in this work by the commercial CFD code, ANSYS fluent and the chemical reaction mechanism injected is GRI mech 2.1. The results are validated with experimental data and discussed.