| Laminar Burning Velocities and Markstein Lengths of Premixed Methane/Air Flames near the Lean Flammability Limit in Microgravity | |
Wang SF(王双峰) ; Zhang H; Jarosinski J; Gorczakowski A; Podfilipski J
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| Source Publication | Combustion and Flame
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| 2010 | |
| Volume | 157Issue:4Pages:667-675 |
| ISSN | 0010-2180 |
| Abstract | Effects of flame stretch on the laminar burning velocities of near-limit fuel-lean methane/air flames have been studied experimentally using a microgravity environment to minimize the complications of buoyancy. Outwardly propagating spherical flames were employed to assess the sensitivities of the laminar burning velocity to flame stretch, represented by Markstein lengths, and the fundamental laminar burning velocities of unstretched flames. Resulting data were reported for methane/air mixtures at ambient temperature and pressure, over the specific range of equivalence ratio that extended from 0.512 (the microgravity flammability limit found in the combustion chamber) to 0.601. Present measurements of unstretched laminar burning velocities were in good agreement with the unique existing microgravity data set at all measured equivalence ratios. Most of previous 1-g experiments using a variety of experimental techniques, however, appeared to give significantly higher burning velocities than the microgravity results. Furthermore, the burning velocities predicted by three chemical reaction mechanisms, which have been tuned primarily under off-limit conditions, were also considerably higher than the present experimental data. Additional results of the present investigation were derived for the overall activation energy and corresponding Zeldovich numbers, and the variation of the global flame Lewis numbers with equivalence ratio. The implications of these results were discussed. 2010 The Combustion Institute. Published by Elsevier Inc. All rights reserved. |
| DOI | 10.1016/j.combustflame.2010.01.006 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000275484500006 |
| WOS Keyword | AIR FLAMES ; GAS COMBUSTION ; MIXTURES ; PROPAGATION ; EXTINCTION ; EXPLOSION ; PRESSURES ; GRAVITY ; NUMBERS |
| WOS Research Area | Thermodynamics ; Energy & Fuels ; Engineering |
| WOS Subject | Thermodynamics ; Energy & Fuels ; Engineering, Multidisciplinary ; Engineering, Chemical ; Engineering, Mechanical |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/34210 |
| Collection | 微重力重点实验室 |
| Corresponding Author | Wang SF(王双峰) |
| Recommended Citation GB/T 7714 | Wang SF,Zhang H,Jarosinski J,et al. Laminar Burning Velocities and Markstein Lengths of Premixed Methane/Air Flames near the Lean Flammability Limit in Microgravity[J]. Combustion and Flame,2010,157,4,:667-675. |
| APA | 王双峰,Zhang H,Jarosinski J,Gorczakowski A,&Podfilipski J.(2010).Laminar Burning Velocities and Markstein Lengths of Premixed Methane/Air Flames near the Lean Flammability Limit in Microgravity.Combustion and Flame,157(4),667-675. |
| MLA | 王双峰,et al."Laminar Burning Velocities and Markstein Lengths of Premixed Methane/Air Flames near the Lean Flammability Limit in Microgravity".Combustion and Flame 157.4(2010):667-675. |
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