High-speed imaging of n-heptane ignition in a high-pressure shock tube

  • Jiankun Shao
  • , Rishav Choudhary
  • , Adam J. Susa
  • , Yuzhe Peng
  • , David F. Davidson
  • , Ronald K. Hanson

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

Both homogeneous and inhomogeneous ignition modes of n-heptane were studied using high-speed imaging in a high-pressure shock tube (HPST). n-Heptane, a fuel with a strong negative temperature coefficient (NTC) behavior, was mixed with 4%-21% oxygen in argon or nitrogen and ignited at both low (< 1000 K) and high (> 1000 K) temperatures, at elevated pressures (>10 atm). Ultraviolet (UV) images were captured through a sapphire shock tube end-wall using a high-speed camera and a UV intensifier. Both homogeneous and inhomogeneous auto-ignition were observed. The current study demonstrates the capability to study auto-ignition inhomogeneity using high-speed imaging in a high-pressure shock tube.

Original languageEnglish
Title of host publicationAIAA Scitech 2019 Forum
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105784
DOIs
Publication statusPublished - 2019
Externally publishedYes
EventAIAA Scitech Forum, 2019 - San Diego, United States
Duration: 7 Jan 201911 Jan 2019

Publication series

NameAIAA Scitech 2019 Forum

Conference

ConferenceAIAA Scitech Forum, 2019
Country/TerritoryUnited States
CitySan Diego
Period7/01/1911/01/19

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