A model for plasma-combustion coupling and its effect on the ignition of a dielectric-barrier discharge actuated hydrogen jet

Luca Massa, Jonathan B. Freund

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Plasma and combustion are coupled at high temperature by correlations terms in the electron and neutral energy equations. These terms represent the effect of neutral temperature in reducing specific collisional losses and thus increasing the electron energy and the concomitant action of the electron temperature in increasing the Joule heating. Joule heating is a favorable contribution to the neutral energy budget, thus the coupling leads to a closed loop feedback that self-sustains high temperature kernels. The research presented in this paper shows that such kernels created by plasma-combustion coupling are an important contribution to the ignition of laminar hydrogen jets in a turbulent cross-flow. The coupling selectively amplifies the energy and radical contributions by the discharge at the ignition hot spot. These contributions dominates the evolution of hot spots interacting with electric field layers over dielectric surfaces and are a key ingredient of predictive ignition models.

Original languageEnglish (US)
Title of host publicationAIAA SciTech Forum - 55th AIAA Aerospace Sciences Meeting
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Electronic)9781624104473
DOIs
StatePublished - 2017
Event55th AIAA Aerospace Sciences Meeting - Grapevine, United States
Duration: Jan 9 2017Jan 13 2017

Publication series

NameAIAA SciTech Forum - 55th AIAA Aerospace Sciences Meeting

Other

Other55th AIAA Aerospace Sciences Meeting
CountryUnited States
CityGrapevine
Period1/9/171/13/17

ASJC Scopus subject areas

  • Aerospace Engineering

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