Ozone and plasma-assisted deflagration to detonation transition of dimethyl ether in a microchannel

Madeline Vorenkamp, Yuki Murakami, Timothy Chen, Michaela Nickerson, Aric Rousso, Andrey Starikovskiy, Yiguang Ju

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

Abstract

This study aimed to understand the plasma assisted low temperature ignition influence on Detonation to Deflagration Transitions (DDT) in a microchannel at atmospheric pressure by using dimethyl ether (DME). At first, we examined the effect of ozone chemical sensitization on DDT. The kinetic effect of O radial addition via ozone dissociation on DDT for DME was investigated. In the second experiment, a dielectric barrier discharge is used for mixture pre-excitation to increase the chemical reactivity for fast DDT. Non-equilibrium plasma creates fast and slow heating of a mixture due to electronic excitation and vibration-rotation energy transfer. Moreover, it produces active species such as atomic oxygen and electronically excited nitrogen and oxygen molecules which can significantly enhance low temperature and high temperature oxidation of fuel and thus accelerate ignition processes dramatically. The effects of plasma generated active species and plasma fast and slow heating on DDT is investigated. The present experiments will provide insights to control engine knock and DDT in advanced engines.

Original languageEnglish (US)
Title of host publicationAIAA Scitech 2021 Forum
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
Pages1-8
Number of pages8
ISBN (Print)9781624106095
StatePublished - 2021
EventAIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2021 - Virtual, Online
Duration: Jan 11 2021Jan 15 2021

Publication series

NameAIAA Scitech 2021 Forum

Conference

ConferenceAIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2021
CityVirtual, Online
Period1/11/211/15/21

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering

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