Large Eddy Simulations of a Premixed Jet Combustor Using Flamelet-Generated Manifolds: Effects of Heat Loss and Subgrid-Scale Models

Handle URI:
http://hdl.handle.net/10754/625562
Title:
Large Eddy Simulations of a Premixed Jet Combustor Using Flamelet-Generated Manifolds: Effects of Heat Loss and Subgrid-Scale Models
Authors:
Hernandez Perez, Francisco E.; Lee, Bok Jik; Im, Hong G. ( 0000-0001-7080-1266 ) ; Fancello, Alessio; Donini, Andrea; van Oijen, Jeroen A.; de Goey, Philip H.
Abstract:
Large eddy simulations of a turbulent premixed jet flame in a confined chamber were conducted using the flamelet-generated manifold technique for chemistry tabulation. The configuration is characterized by an off-center nozzle having an inner diameter of 10 mm, supplying a lean methane-air mixture with an equivalence ratio of 0.71 and a mean velocity of 90 m/s, at 573 K and atmospheric pressure. Conductive heat loss is accounted for in the manifold via burner-stabilized flamelets and the subgrid-scale (SGS) turbulencechemistry interaction is modeled via presumed probability density functions. Comparisons between numerical results and measured data show that a considerable improvement in the prediction of temperature is achieved when heat losses are included in the manifold, as compared to the adiabatic one. Additional improvement in the temperature predictions is obtained by incorporating radiative heat losses. Moreover, further enhancements in the LES predictions are achieved by employing SGS models based on transport equations, such as the SGS turbulence kinetic energy equation with dynamic coefficients. While the numerical results display good agreement up to a distance of 4 nozzle diameters downstream of the nozzle exit, the results become less satisfactory along the downstream, suggesting that further improvements in the modeling are required, among which a more accurate model for the SGS variance of progress variable can be relevant.
KAUST Department:
Clean Combustion Research Center
Citation:
Hernandez Perez FE, Lee BJ, Im HG, Fancello A, Donini A, et al. (2017) Large Eddy Simulations of a Premixed Jet Combustor Using Flamelet-Generated Manifolds: Effects of Heat Loss and Subgrid-Scale Models. 55th AIAA Aerospace Sciences Meeting. Available: http://dx.doi.org/10.2514/6.2017-0379.
Publisher:
American Institute of Aeronautics and Astronautics
Journal:
55th AIAA Aerospace Sciences Meeting
Conference/Event name:
55th AIAA Aerospace Sciences Meeting
Issue Date:
5-Jan-2017
DOI:
10.2514/6.2017-0379
Type:
Conference Paper
Sponsors:
This research work was sponsored by King Abdullah University of Science and Technology (KAUST). The simulations utilized the computing resources at KAUST Supercomputing Laboratory and Research Computing.
Additional Links:
https://arc.aiaa.org/doi/10.2514/6.2017-0379
Appears in Collections:
Conference Papers; Clean Combustion Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorHernandez Perez, Francisco E.en
dc.contributor.authorLee, Bok Jiken
dc.contributor.authorIm, Hong G.en
dc.contributor.authorFancello, Alessioen
dc.contributor.authorDonini, Andreaen
dc.contributor.authorvan Oijen, Jeroen A.en
dc.contributor.authorde Goey, Philip H.en
dc.date.accessioned2017-10-03T12:49:26Z-
dc.date.available2017-10-03T12:49:26Z-
dc.date.issued2017-01-05en
dc.identifier.citationHernandez Perez FE, Lee BJ, Im HG, Fancello A, Donini A, et al. (2017) Large Eddy Simulations of a Premixed Jet Combustor Using Flamelet-Generated Manifolds: Effects of Heat Loss and Subgrid-Scale Models. 55th AIAA Aerospace Sciences Meeting. Available: http://dx.doi.org/10.2514/6.2017-0379.en
dc.identifier.doi10.2514/6.2017-0379en
dc.identifier.urihttp://hdl.handle.net/10754/625562-
dc.description.abstractLarge eddy simulations of a turbulent premixed jet flame in a confined chamber were conducted using the flamelet-generated manifold technique for chemistry tabulation. The configuration is characterized by an off-center nozzle having an inner diameter of 10 mm, supplying a lean methane-air mixture with an equivalence ratio of 0.71 and a mean velocity of 90 m/s, at 573 K and atmospheric pressure. Conductive heat loss is accounted for in the manifold via burner-stabilized flamelets and the subgrid-scale (SGS) turbulencechemistry interaction is modeled via presumed probability density functions. Comparisons between numerical results and measured data show that a considerable improvement in the prediction of temperature is achieved when heat losses are included in the manifold, as compared to the adiabatic one. Additional improvement in the temperature predictions is obtained by incorporating radiative heat losses. Moreover, further enhancements in the LES predictions are achieved by employing SGS models based on transport equations, such as the SGS turbulence kinetic energy equation with dynamic coefficients. While the numerical results display good agreement up to a distance of 4 nozzle diameters downstream of the nozzle exit, the results become less satisfactory along the downstream, suggesting that further improvements in the modeling are required, among which a more accurate model for the SGS variance of progress variable can be relevant.en
dc.description.sponsorshipThis research work was sponsored by King Abdullah University of Science and Technology (KAUST). The simulations utilized the computing resources at KAUST Supercomputing Laboratory and Research Computing.en
dc.publisherAmerican Institute of Aeronautics and Astronauticsen
dc.relation.urlhttps://arc.aiaa.org/doi/10.2514/6.2017-0379en
dc.titleLarge Eddy Simulations of a Premixed Jet Combustor Using Flamelet-Generated Manifolds: Effects of Heat Loss and Subgrid-Scale Modelsen
dc.typeConference Paperen
dc.contributor.departmentClean Combustion Research Centeren
dc.identifier.journal55th AIAA Aerospace Sciences Meetingen
dc.conference.date2017-01-09 to 2017-01-13en
dc.conference.name55th AIAA Aerospace Sciences Meetingen
dc.conference.locationGrapevine, TX, USAen
dc.contributor.institutionPhysical Science and Engineering, Clean Combustion Research Center, , Saudi Arabiaen
dc.contributor.institutionEindhoven University of Technology (TU/e), Combustion Technology, Eindhoven, 5600 MB, , Netherlandsen
kaust.authorHernandez Perez, Francisco E.en
kaust.authorLee, Bok Jiken
kaust.authorIm, Hong G.en
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