Details
| Original language | English |
|---|---|
| Pages (from-to) | 103-119 |
| Number of pages | 17 |
| Journal | Combustion science and technology |
| Volume | 108 |
| Issue number | 1-3 |
| Publication status | Published - 1 Jan 1995 |
| Externally published | Yes |
Abstract
Experimental and theoretical studies on the spontaneous ignition process of isolated fuel droplets were carried out Time dependent temperature fields around the igniting droplets were observed by interferometry so that two step temperature rise can be detected. Some experiments are performed under microgravity to obtain reference data. Induction times are examined as a function of ambient temperature. As a result, a zero temperature coefficient region is found, which is equivalent to the NTC (negative temperature coefficient) region for the ignition of premixed gas. A numerical model is developed applying a simplified chemical reaction model that includes the low and the high temperature reactions. The model is able to reproduce the two step temperature rise and the roles of the two kinds of reactions on the ignition process up to the establishment of a diffusion flame around the droplet are examined.
Keywords
- Droplet, ignition, microgravity
ASJC Scopus subject areas
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In: Combustion science and technology, Vol. 108, No. 1-3, 01.01.1995, p. 103-119.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Two Stage Ignition of n-Heptane Isolated Droplets
AU - Tanabe, M.
AU - Kono, M.
AU - Sato, J.
AU - Koenig, J.
AU - Eigenbrod, C.
AU - Dinkelacker, F.
AU - Rath, H. J.
PY - 1995/1/1
Y1 - 1995/1/1
N2 - Experimental and theoretical studies on the spontaneous ignition process of isolated fuel droplets were carried out Time dependent temperature fields around the igniting droplets were observed by interferometry so that two step temperature rise can be detected. Some experiments are performed under microgravity to obtain reference data. Induction times are examined as a function of ambient temperature. As a result, a zero temperature coefficient region is found, which is equivalent to the NTC (negative temperature coefficient) region for the ignition of premixed gas. A numerical model is developed applying a simplified chemical reaction model that includes the low and the high temperature reactions. The model is able to reproduce the two step temperature rise and the roles of the two kinds of reactions on the ignition process up to the establishment of a diffusion flame around the droplet are examined.
AB - Experimental and theoretical studies on the spontaneous ignition process of isolated fuel droplets were carried out Time dependent temperature fields around the igniting droplets were observed by interferometry so that two step temperature rise can be detected. Some experiments are performed under microgravity to obtain reference data. Induction times are examined as a function of ambient temperature. As a result, a zero temperature coefficient region is found, which is equivalent to the NTC (negative temperature coefficient) region for the ignition of premixed gas. A numerical model is developed applying a simplified chemical reaction model that includes the low and the high temperature reactions. The model is able to reproduce the two step temperature rise and the roles of the two kinds of reactions on the ignition process up to the establishment of a diffusion flame around the droplet are examined.
KW - Droplet
KW - ignition
KW - microgravity
UR - http://www.scopus.com/inward/record.url?scp=0000268531&partnerID=8YFLogxK
U2 - 10.1080/00102209508960393
DO - 10.1080/00102209508960393
M3 - Article
AN - SCOPUS:0000268531
VL - 108
SP - 103
EP - 119
JO - Combustion science and technology
JF - Combustion science and technology
SN - 0010-2202
IS - 1-3
ER -