Large eddy simulation of hydrogen autoignition in a preheated turbulent co-flow

All of RECERCAT

To access the full text documents, please follow this link: http://hdl.handle.net/2117/105026

Title:	Large eddy simulation of hydrogen autoignition in a preheated turbulent co-flow
Author:	Muela Castro, Jordi; Lehmkuhl Barba, Oriol; Oliva Llena, Asensio; Ventosa Molina, Jordi
Other authors:	Universitat Politècnica de Catalunya. Departament de Màquines i Motors Tèrmics; Universitat Politècnica de Catalunya. Departament de Física; Universitat Politècnica de Catalunya. CTTC - Centre Tecnològic de la Transferència de Calor
Abstract:	The autoignition process of a hydrogen jet into a preheated turbulent air stream is numerically studied. A Progress-variable (PV) model with the turbulence-chemistry interactions modelled using a Presumed Conditional Moment (PCM) closure has been used. Furthermore, the same case is studied using a Finite Rates model without closure for the reaction rate. The PV-PCM model reproduces satisfactorily the physical behaviour found in the experiments, although the model tends to underpredict the autoignition length. The results of the Finite Rates model also capture accurately the autoignition phenomenology observed experimentally and the autoignition lengths are closer to those obtained in the experiment.
Abstract:	Peer Reviewed
Subject(s):	-Àrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluids -Turbulence-- Numerical simulation -Hydrogen -Turbulència -- Simulació numèrica -Hidrogen -- Combustió
Rights:
Document type:	Article - Published version Conference Object
Share: