Is Ignition In A Shock Tube Homogeneous? An Experimental Study Behind Reflected Shock Waves

Abstract

In this study, new ignition delay times and high-speed images were taken behind reflected shockwaves during hydrogen/oxygen ignition to probe the homogenieity of ignition process and their effects on interpreting ignition delay times. Experimental conditions were temperatures between 941-1177K and pressures between 2.87-3.45atm for a 8%H2/4%O2/Ar mixture. Experiments were conducted in both a clean and dirty shock tube as we did recently in other hydrogen mixtures. Ignition delay times showed no significant deviations between these two types of tests, but endwall image sequences conducted in a dirty facility showed a large amount of dirt and soot particulates, clouding the images during preignition. Current high-speed results for ignition delay times confirm previous literature studies conducted using without imaging and chemical kinetic modeling.

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/10.2514/6.2018-0144

Socpus ID

85044371810 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85044371810

This document is currently not available here.

Share

COinS