IDEAL studies the ignition of combustible mixtures near a wall

The ignition process produced by the instantaneous application of a linear local heat source near a cold wall is studied using irreversible Arrhenius kinetics. Special attention is devoted here to investigate the limiting case when the instantaneous source is located at a distance from the wall small in comparison with the thermal width of the flame. The ignition problem in this case is reduced to the study of flame initiation by means of a thermal dipole. Changes in the critical values of the dipole intensity for successful ignition are presented as a function of the Lewis number.

The results are compared with the configuration in which the distance between the source and the cold wall is finite. This study is also relevant for safety issues in the sense of preventing accidental ignition of combustible mixtures.

Title: Flame initiation near a cold isothermal wall: Ignition by an instantaneous thermal dipole
Authors: VN Kurdyumov, C Jiménez, M Sánchez-Sanz
Journal: Combustion and Flame 234, 111643
Publication date: 2021.
You can read an excerpt here


IDEAL aims at closing knowledge gaps regarding Hydrogen and Hydrogen-Derived fuels (ammonia, biofuels, biogas) to develop or adapt existing appliances to carbon-free fuels. You can write us an email or contact us through our contact form.

Project funded by  Agencia Estatal de Investigación (PID2019-108592RB-C41-C42-C43-C44 / AEI / 10.13039/501100011033)


© IDEAL – All rights reserved · Privacy · Cookies Policy 
Web desarrollada por Jinete Pálido posicionamiento web