Journal article
Flame structure changes resulting from hydrogen-enrichment and pressurization for low-swirl premixed methane―air flames
International journal of hydrogen energy, Vol.37(13), pp.10397-10404
2012
DOI: 10.1016/j.ijhydene.2012.04.017
Abstract
With the current focus on alternate and renewable fuels, fuel flexibility has become a driving factor in the design of new turbines. Flame stability is heavily impacted by the presence of hydrogen in the fuel stream (as is common in many alternative fuels). This study examines how the flame dynamics change in response to the systematic addition of hydrogen in a low-swirl lean premixed methane–air burner. Stability maps for these test cases show that adding hydrogen broadens the blow-off limits, with 20% hydrogen resulting in a 7% change while 40% hydrogen results in a 35% larger stable region. The most dramatic manifestation of hydrogen addition is the greatly decreased radius of curvature of the local flame surface, which is visible from the increased wrinkling of the flame front. Increases in both pressure and hydrogen enrichment result in higher means and variances of flame front curvatures. The flame surface density is in agreement with the aforementioned flame front curvature PDFs in that increasing the pressure and hydrogen concentration leads to an increase in the maximum flame surface density.
Details
- Title: Subtitle
- Flame structure changes resulting from hydrogen-enrichment and pressurization for low-swirl premixed methane―air flames
- Creators
- Majid EMADI - Department of Mechanical and Industrial Engineering, University of Iowa, 3131 Seamans Center, Iowa City, IA 52242, United StatesDouglas KARKOW - Department of Mechanical and Industrial Engineering, University of Iowa, 3131 Seamans Center, Iowa City, IA 52242, United StatesTaleb SALAMEH - Department of Mechanical and Industrial Engineering, University of Iowa, 3131 Seamans Center, Iowa City, IA 52242, United StatesAmeet GOHIL - Department of Mechanical and Industrial Engineering, University of Iowa, 3131 Seamans Center, Iowa City, IA 52242, United StatesAlbert RATNER - Department of Mechanical and Industrial Engineering, University of Iowa, 3131 Seamans Center, Iowa City, IA 52242, United States
- Resource Type
- Journal article
- Publication Details
- International journal of hydrogen energy, Vol.37(13), pp.10397-10404
- Publisher
- Elsevier; Kidlington
- DOI
- 10.1016/j.ijhydene.2012.04.017
- ISSN
- 0360-3199
- eISSN
- 1879-3487
- Language
- English
- Date published
- 2012
- Academic Unit
- Mechanical Engineering
- Record Identifier
- 9984064595202771
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