高Ka 数下分子扩散效应对氨气/氢气/空气预混火焰结构的影响
(2022) In Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics 43(8). p.2025-2032- Abstract
Simultaneous planar laser induced fluorescence (PLIF) and Rayleigh scattering thermometry (RST) were applied to measure the key species and temperature fields of premixed ammonia/ hydrogen/air jet flames to investigate the effects of differential diffusion on flame structure. NH-PLIF technique was developed to properly characterize the reaction zone of ammonia flames. Three flames with similar laminar combustion characteristics but different Lewis numbers (Le) were investigated. Results show that the reaction zone are locally thickened for all flames at high Karlovitz number (Ka). Furthermore, the reaction layer thickness increases with the Le, indicating that the differential diffusion still plays a role in the turbulent combustion... (More)
Simultaneous planar laser induced fluorescence (PLIF) and Rayleigh scattering thermometry (RST) were applied to measure the key species and temperature fields of premixed ammonia/ hydrogen/air jet flames to investigate the effects of differential diffusion on flame structure. NH-PLIF technique was developed to properly characterize the reaction zone of ammonia flames. Three flames with similar laminar combustion characteristics but different Lewis numbers (Le) were investigated. Results show that the reaction zone are locally thickened for all flames at high Karlovitz number (Ka). Furthermore, the reaction layer thickness increases with the Le, indicating that the differential diffusion still plays a role in the turbulent combustion even in the distributed reaction zone regime.
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- author
- Cai, Xiao LU ; Fan, Qingshuang LU ; Wang, Jinhua ; Huang, Zuohua and Li, Zhongshan LU
- organization
- alternative title
- Effect of Differential Diffusion on the Structure of High Karlovitz Number Premixed Ammonia/Hydrogen/Air Flames
- publishing date
- 2022
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Differential diffusion, High Ka number, Reaction zone thickness, Turbulent flame structure
- in
- Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics
- volume
- 43
- issue
- 8
- pages
- 8 pages
- publisher
- Science Press
- external identifiers
-
- scopus:85136017119
- ISSN
- 0253-231X
- language
- Chinese (Simplified)
- LU publication?
- yes
- id
- 15e38beb-ddab-417f-9ffb-7cc42646fb1d
- date added to LUP
- 2022-09-23 13:30:55
- date last changed
- 2023-11-21 17:08:01
@article{15e38beb-ddab-417f-9ffb-7cc42646fb1d, abstract = {{<p>Simultaneous planar laser induced fluorescence (PLIF) and Rayleigh scattering thermometry (RST) were applied to measure the key species and temperature fields of premixed ammonia/ hydrogen/air jet flames to investigate the effects of differential diffusion on flame structure. NH-PLIF technique was developed to properly characterize the reaction zone of ammonia flames. Three flames with similar laminar combustion characteristics but different Lewis numbers (Le) were investigated. Results show that the reaction zone are locally thickened for all flames at high Karlovitz number (Ka). Furthermore, the reaction layer thickness increases with the Le, indicating that the differential diffusion still plays a role in the turbulent combustion even in the distributed reaction zone regime.</p>}}, author = {{Cai, Xiao and Fan, Qingshuang and Wang, Jinhua and Huang, Zuohua and Li, Zhongshan}}, issn = {{0253-231X}}, keywords = {{Differential diffusion; High Ka number; Reaction zone thickness; Turbulent flame structure}}, language = {{chi}}, number = {{8}}, pages = {{2025--2032}}, publisher = {{Science Press}}, series = {{Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics}}, title = {{高Ka 数下分子扩散效应对氨气/氢气/空气预混火焰结构的影响}}, volume = {{43}}, year = {{2022}}, }