旋流器出口结构对旋流火焰的影响研究
(2019) In Tuijin Jishu/Journal of Propulsion Technology 40(6). p.1324-1331- Abstract
To deeply understand the non-premixed swirl flame, the effects of two burner exit geometries on the non-premixed swirl flames modes were studied by performing OH-PLIF, PIV measurements and coupling LES with PDF combustion model numerically. The results showed that the stochastic PDF method can predict the swirl flow fields and detailed flame structures including local extinction. Two different quarl geometries played significant roles on the flow fields thus leading to the local extinction and lift-off. The recirculation zone is smaller in the non-quarl case which causes a more serious quenching state. Meanwhile, at the stoichiometric equivalence ratio, the OH and CH2O distributions in the no-quarl exit were broader than the... (More)
To deeply understand the non-premixed swirl flame, the effects of two burner exit geometries on the non-premixed swirl flames modes were studied by performing OH-PLIF, PIV measurements and coupling LES with PDF combustion model numerically. The results showed that the stochastic PDF method can predict the swirl flow fields and detailed flame structures including local extinction. Two different quarl geometries played significant roles on the flow fields thus leading to the local extinction and lift-off. The recirculation zone is smaller in the non-quarl case which causes a more serious quenching state. Meanwhile, at the stoichiometric equivalence ratio, the OH and CH2O distributions in the no-quarl exit were broader than the quarl exit at the low temperature regime. This indicated that many low-temperature reactions took places, providing beneficial conditions for the lift-off flame stabilization.
(Less)
- author
- Yu, Sen Bin LU ; Liu, Xiao LU and Zheng, Hong Tao
- organization
- alternative title
- Effects of Burner Exit Geometries on Swirl Flames
- publishing date
- 2019-06-01
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- LES-PDF, Local quenching, Quarl structure geometry, Swirl flame
- in
- Tuijin Jishu/Journal of Propulsion Technology
- volume
- 40
- issue
- 6
- pages
- 8 pages
- publisher
- Journal of Propulsion Technology
- external identifiers
-
- scopus:85071247066
- ISSN
- 1001-4055
- DOI
- 10.13675/j.cnki.tjjs.180311
- language
- Chinese
- LU publication?
- yes
- id
- 7960d2f8-98bc-432d-9b91-49005003c196
- date added to LUP
- 2019-09-05 14:48:18
- date last changed
- 2022-04-10 20:57:45
@article{7960d2f8-98bc-432d-9b91-49005003c196,
abstract = {{<p>To deeply understand the non-premixed swirl flame, the effects of two burner exit geometries on the non-premixed swirl flames modes were studied by performing OH-PLIF, PIV measurements and coupling LES with PDF combustion model numerically. The results showed that the stochastic PDF method can predict the swirl flow fields and detailed flame structures including local extinction. Two different quarl geometries played significant roles on the flow fields thus leading to the local extinction and lift-off. The recirculation zone is smaller in the non-quarl case which causes a more serious quenching state. Meanwhile, at the stoichiometric equivalence ratio, the OH and CH<sub>2</sub>O distributions in the no-quarl exit were broader than the quarl exit at the low temperature regime. This indicated that many low-temperature reactions took places, providing beneficial conditions for the lift-off flame stabilization.</p>}},
author = {{Yu, Sen Bin and Liu, Xiao and Zheng, Hong Tao}},
issn = {{1001-4055}},
keywords = {{LES-PDF; Local quenching; Quarl structure geometry; Swirl flame}},
language = {{chi}},
month = {{06}},
number = {{6}},
pages = {{1324--1331}},
publisher = {{Journal of Propulsion Technology}},
series = {{Tuijin Jishu/Journal of Propulsion Technology}},
title = {{旋流器出口结构对旋流火焰的影响研究}},
url = {{http://dx.doi.org/10.13675/j.cnki.tjjs.180311}},
doi = {{10.13675/j.cnki.tjjs.180311}},
volume = {{40}},
year = {{2019}},
}