A Study Of Methane And Hydrogen Ignition Delay Times In Co2 At High Pressures Near 40 Atm

Abstract

Supercritical CO2 power generation cycles are being developed for cleaner and high efficiency combustion. For these systems to be designed, the chemical kinetics of combustion must be well understood at their operating regimes which are typically very high-pressure conditions. In this study, experiments were performed behind reflected shockwaves to measure the ignition delay times for methane and hydrogen in CO2 diluted environments at around 40 atmospheres. The temperature ranges were between 1325K to 1600 K for methane and 1150K to 1330K for hydrogen, respectively. Based on the data, Aramco 2.0 mechanism and GRI 3.0 mechanism are approximately modelling the ignition delay times of methane combustion, however, are unable to predict the ignition delay times of hydrogen.

Publication Date

1-1-2018

Publication Title

AIAA Aerospace Sciences Meeting, 2018

Issue

210059

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.2514/6.2018-0146

Socpus ID

85044358242 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85044358242

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