Impact of heat release on strain rate field in turbulent premixed Bunsen flames
Abstract
The effects of combustion on the strain rate field are investigated in turbulent premixed CH4/air Bunsen flames using simultaneous tomographic PIV and OH LIF measurements. Tomographic PIV provides three-dimensional velocity measurements, from which the complete strain rate tensor is determined. The OH LIF measurements are used to determine the position of the flame surface and the flame-normal orientation within the imaging plane. This combination of diagnostic techniques enables quantification of divergence as well as flame-normal and tangential strain rates, which are otherwise biased using only planar measurements. Measurements are compared in three lean-to-stoichiometric flames that have different amounts of heat release and Damköhler numbers greater than unity. The effects of heat release on the principal strain rates and their alignment relative to the local flame normal are analyzed. The extensive strain rate preferentially aligns with the flame normal in the reaction zone, which has been indicated by previous studies. The strength of this alignment increases with increasing heat release and, as a result, the flame-normal strain rate becomes highly extensive. These effects are associated with the gas expansion normal to the flame surface, which is largest for the stoichiometric flame. In the preheat zone, the compressive strain rate has amore »
- Publication Date:
- Research Org.:
- Sandia National Lab. (SNL-CA), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1329630
- Alternate Identifier(s):
- OSTI ID: 1413161
- Report Number(s):
- SAND-2016-10308J
Journal ID: ISSN 1540-7489; 648269
- Grant/Contract Number:
- AC04-94AL85000
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Proceedings of the Combustion Institute
- Additional Journal Information:
- Journal Name: Proceedings of the Combustion Institute; Journal ID: ISSN 1540-7489
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; tomographic PIV; turbulent premixed flames; strain rate; dilatation
Citation Formats
Coriton, Bruno Rene Leon, and Frank, Jonathan H. Impact of heat release on strain rate field in turbulent premixed Bunsen flames. United States: N. p., 2016.
Web. doi:10.1016/j.proci.2016.07.006.
Coriton, Bruno Rene Leon, & Frank, Jonathan H. Impact of heat release on strain rate field in turbulent premixed Bunsen flames. United States. https://doi.org/10.1016/j.proci.2016.07.006
Coriton, Bruno Rene Leon, and Frank, Jonathan H. Wed .
"Impact of heat release on strain rate field in turbulent premixed Bunsen flames". United States. https://doi.org/10.1016/j.proci.2016.07.006. https://www.osti.gov/servlets/purl/1329630.
@article{osti_1329630,
title = {Impact of heat release on strain rate field in turbulent premixed Bunsen flames},
author = {Coriton, Bruno Rene Leon and Frank, Jonathan H.},
abstractNote = {The effects of combustion on the strain rate field are investigated in turbulent premixed CH4/air Bunsen flames using simultaneous tomographic PIV and OH LIF measurements. Tomographic PIV provides three-dimensional velocity measurements, from which the complete strain rate tensor is determined. The OH LIF measurements are used to determine the position of the flame surface and the flame-normal orientation within the imaging plane. This combination of diagnostic techniques enables quantification of divergence as well as flame-normal and tangential strain rates, which are otherwise biased using only planar measurements. Measurements are compared in three lean-to-stoichiometric flames that have different amounts of heat release and Damköhler numbers greater than unity. The effects of heat release on the principal strain rates and their alignment relative to the local flame normal are analyzed. The extensive strain rate preferentially aligns with the flame normal in the reaction zone, which has been indicated by previous studies. The strength of this alignment increases with increasing heat release and, as a result, the flame-normal strain rate becomes highly extensive. These effects are associated with the gas expansion normal to the flame surface, which is largest for the stoichiometric flame. In the preheat zone, the compressive strain rate has a tendency to align with the flame normal. Away from the flame front, the flame – strain rate alignment is arbitrary in both the reactants and products. The flame-tangential strain rate is on average positive across the flame front, and therefore the turbulent strain rate field contributes to the enhancement of scalar gradients as in passive scalar turbulence. As a result, increases in heat release result in larger positive values of the divergence as well as flame-normal and tangential strain rates, the tangential strain rate has a weaker dependence on heat release than the flame-normal strain rate and the divergence.},
doi = {10.1016/j.proci.2016.07.006},
journal = {Proceedings of the Combustion Institute},
number = ,
volume = ,
place = {United States},
year = {Wed Aug 10 00:00:00 EDT 2016},
month = {Wed Aug 10 00:00:00 EDT 2016}
}
Free Publicly Available Full Text
Publisher's Version of Record
Other availability
Search WorldCat to find libraries that may hold this journal
Cited by: 6 works
Citation information provided by
Web of Science
Web of Science
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.
Works referenced in this record:
Interaction of turbulence and scalar fields in premixed flames
journal, April 2006
- Swaminathan, N.; Grout, R. W.
- Physics of Fluids, Vol. 18, Issue 4
Structure of a spatially developing turbulent lean methane–air Bunsen flame
journal, January 2007
- Sankaran, Ramanan; Hawkes, Evatt R.; Chen, Jacqueline H.
- Proceedings of the Combustion Institute, Vol. 31, Issue 1
Interactions between turbulence and flames in premixed reacting flows
journal, December 2011
- Hamlington, Peter E.; Poludnenko, Alexei Y.; Oran, Elaine S.
- Physics of Fluids, Vol. 23, Issue 12
The Scalar Gradient Alignment Statistics of Flame Kernels and its Modelling Implications for Turbulent Premixed Combustion
journal, February 2010
- Chakraborty, N.; Rogerson, J. W.; Swaminathan, N.
- Flow, Turbulence and Combustion, Vol. 85, Issue 1
Subgrid Modeling of Turbulent Premixed Flames in the Flamelet Regime
journal, January 2000
- Chakravarthy, V. K.; Menon, S.
- Flow, Turbulence and Combustion, Vol. 65, Issue 2, p. 133-161
Effect of heat release on turbulence and scalar-turbulence interaction in premixed combustion
journal, March 2008
- Hartung, G.; Hult, J.; Kaminski, C. F.
- Physics of Fluids, Vol. 20, Issue 3
Statistics and dynamics of turbulence–flame alignment in premixed combustion
journal, August 2012
- Steinberg, Adam M.; Driscoll, James F.; Swaminathan, Nedunchezhian
- Combustion and Flame, Vol. 159, Issue 8
On the alignment of fluid-dynamic principal strain-rates with the 3D flamelet-normal in a premixed turbulent V-flame
journal, January 2015
- Sponfeldner, T.; Boxx, I.; Beyrau, F.
- Proceedings of the Combustion Institute, Vol. 35, Issue 2
Tomographic particle image velocimetry
journal, October 2006
- Elsinga, G. E.; Scarano, F.; Wieneke, B.
- Experiments in Fluids, Vol. 41, Issue 6
Tomographic PIV measurements in a turbulent lifted jet flame
journal, October 2013
- Weinkauff, J.; Michaelis, D.; Dreizler, A.
- Experiments in Fluids, Vol. 54, Issue 12
High-speed tomographic PIV and OH PLIF measurements in turbulent reactive flows
journal, June 2014
- Coriton, Bruno; Steinberg, Adam M.; Frank, Jonathan H.
- Experiments in Fluids, Vol. 55, Issue 6
High-speed tomographic PIV measurements of strain rate intermittency and clustering in turbulent partially-premixed jet flames
journal, January 2015
- Coriton, Bruno; Frank, Jonathan H.
- Proceedings of the Combustion Institute, Vol. 35, Issue 2
Alignment of vorticity and scalar gradient with strain rate in simulated Navier–Stokes turbulence
journal, January 1987
- Ashurst, Wm. T.; Kerstein, A. R.; Kerr, R. M.
- Physics of Fluids, Vol. 30, Issue 8
Influence of combustion on principal strain-rate transport in turbulent premixed flames
journal, January 2015
- Steinberg, A. M.; Coriton, B.; Frank, J. H.
- Proceedings of the Combustion Institute, Vol. 35, Issue 2
Measurements of conditional velocities in turbulent premixed flames by simultaneous OH PLIF and PIV
journal, January 1999
- Frank, Jonathan H.; Kalt, Peter A. M.; Bilger, Robert W.
- Combustion and Flame, Vol. 116, Issue 1-2
Interaction of turbulent premixed flames with combustion products: Role of stoichiometry
journal, August 2016
- Coriton, Bruno; Frank, Jonathan H.; Gomez, Alessandro
- Combustion and Flame, Vol. 170
Works referencing / citing this record:
Enstrophy transport in swirl combustion
journal, August 2019
- Kazbekov, Askar; Kumashiro, Keishi; Steinberg, Adam M.
- Journal of Fluid Mechanics, Vol. 876