Direct numerical simulation of bluff-body-stabilized premixed flames

Handle URI:
http://hdl.handle.net/10754/564879
Title:
Direct numerical simulation of bluff-body-stabilized premixed flames
Authors:
Arias, Paul G.; Lee, Bok Jik; Im, Hong G. ( 0000-0001-7080-1266 )
Abstract:
To enable high fidelity simulation of combustion phenomena in realistic devices, an embedded boundary method is implemented into direct numerical simulations (DNS) of reacting flows. One of the additional numerical issues associated with reacting flows is the stable treatment of the embedded boundaries in the presence of multicomponent species and reactions. The implemented method is validated in two test con gurations: a pre-mixed hydrogen/air flame stabilized in a backward-facing step configuration, and reactive flows around a square prism. The former is of interest in practical gas turbine combustor applications in which the thermo-acoustic instabilities are a strong concern, and the latter serves as a good model problem to capture the vortex shedding behind a bluff body. In addition, a reacting flow behind the square prism serves as a model for the study of flame stabilization in a micro-channel combustor. The present study utilizes fluid-cell reconstruction methods in order to capture important flame-to-solid wall interactions that are important in confined multicomponent reacting flows. Results show that the DNS with embedded boundaries can be extended to more complex geometries without loss of accuracy and the high fidelity simulation data can be used to develop and validate turbulence and combustion models for the design of practical combustion devices.
KAUST Department:
Clean Combustion Research Center; Physical Sciences and Engineering (PSE) Division; Mechanical Engineering Program; Computational Reacting Flow Laboratory (CRFL)
Publisher:
American Institute of Aeronautics and Astronautics (AIAA)
Journal:
52nd Aerospace Sciences Meeting
Conference/Event name:
52nd AIAA Aerospace Sciences Meeting - AIAA Science and Technology Forum and Exposition, SciTech 2014
Issue Date:
10-Jan-2014
DOI:
10.2514/6.2014-1025
Type:
Conference Paper
ISBN:
9781624102561
Appears in Collections:
Conference Papers; Physical Sciences and Engineering (PSE) Division; Mechanical Engineering Program; Clean Combustion Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorArias, Paul G.en
dc.contributor.authorLee, Bok Jiken
dc.contributor.authorIm, Hong G.en
dc.date.accessioned2015-08-04T07:23:55Zen
dc.date.available2015-08-04T07:23:55Zen
dc.date.issued2014-01-10en
dc.identifier.isbn9781624102561en
dc.identifier.doi10.2514/6.2014-1025en
dc.identifier.urihttp://hdl.handle.net/10754/564879en
dc.description.abstractTo enable high fidelity simulation of combustion phenomena in realistic devices, an embedded boundary method is implemented into direct numerical simulations (DNS) of reacting flows. One of the additional numerical issues associated with reacting flows is the stable treatment of the embedded boundaries in the presence of multicomponent species and reactions. The implemented method is validated in two test con gurations: a pre-mixed hydrogen/air flame stabilized in a backward-facing step configuration, and reactive flows around a square prism. The former is of interest in practical gas turbine combustor applications in which the thermo-acoustic instabilities are a strong concern, and the latter serves as a good model problem to capture the vortex shedding behind a bluff body. In addition, a reacting flow behind the square prism serves as a model for the study of flame stabilization in a micro-channel combustor. The present study utilizes fluid-cell reconstruction methods in order to capture important flame-to-solid wall interactions that are important in confined multicomponent reacting flows. Results show that the DNS with embedded boundaries can be extended to more complex geometries without loss of accuracy and the high fidelity simulation data can be used to develop and validate turbulence and combustion models for the design of practical combustion devices.en
dc.publisherAmerican Institute of Aeronautics and Astronautics (AIAA)en
dc.titleDirect numerical simulation of bluff-body-stabilized premixed flamesen
dc.typeConference Paperen
dc.contributor.departmentClean Combustion Research Centeren
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentMechanical Engineering Programen
dc.contributor.departmentComputational Reacting Flow Laboratory (CRFL)en
dc.identifier.journal52nd Aerospace Sciences Meetingen
dc.conference.date13 January 2014 through 17 January 2014en
dc.conference.name52nd AIAA Aerospace Sciences Meeting - AIAA Science and Technology Forum and Exposition, SciTech 2014en
dc.conference.locationNational Harbor, MDen
dc.contributor.institutionUniversity of Michigan, Clean Combustion Research Center, Ann Arbor, MI 48109, United Statesen
kaust.authorArias, Paul G.en
kaust.authorIm, Hong G.en
kaust.authorLee, Bok Jiken
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