Stochastic modeling of unsteady extinction in turbulent non-premixed combustion

Lackmann, T.; Hewson, J. C.; Knaus, R. C.; Kerstein, A. R.; Oevermann, M.

doi:10.1016/j.proci.2016.07.014

Title: Stochastic modeling of unsteady extinction in turbulent non-premixed combustion

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Abstract

Turbulent fluctuations of the scalar dissipation rate have a major impact on extinction in non-premixed combustion. Recently, an unsteady extinction criterion has been developed (Hewson, 2013) that predicts extinction dependent on the duration and the magnitude of dissipation rate fluctuations exceeding a critical quenching value; this quantity is referred to as the dissipation impulse. Furthermore, the magnitude of the dissipation impulse corresponding to unsteady extinction is related to the difficulty with which a flamelet is exintguished, based on the steady-state S-curve.

Authors:

Lackmann, T. ^[1]; Hewson, J. C. ^[2]; Knaus, R. C. ^[2]; Kerstein, A. R. ^[3]; Oevermann, M. ^[1]

Chambers Univ. of Technology, Gothenburg (Sweden)
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Consultant, Danville, CA (United States)

Publication Date:: Tue Jul 19 00:00:00 EDT 2016

Research Org.:: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Sponsoring Org.:: USDOE National Nuclear Security Administration (NNSA)

OSTI Identifier:: 1275513

Alternate Identifier(s):: OSTI ID: 1413160

Report Number(s):: SAND-2016-7105J
Journal ID: ISSN 1540-7489; PII: S154074891630270X

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:: 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; extinction; unsteady flames; non-premixed flame; scalar dissipation rate; turbulence

Citation Formats


                    Lackmann, T., Hewson, J. C., Knaus, R. C., Kerstein, A. R., and Oevermann, M. Stochastic modeling of unsteady extinction in turbulent non-premixed combustion.  United States: N. p., 2016. 
Web.  doi:10.1016/j.proci.2016.07.014.

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                    Lackmann, T., Hewson, J. C., Knaus, R. C., Kerstein, A. R., & Oevermann, M. Stochastic modeling of unsteady extinction in turbulent non-premixed combustion.  United States.  https://doi.org/10.1016/j.proci.2016.07.014

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                    Lackmann, T., Hewson, J. C., Knaus, R. C., Kerstein, A. R., and Oevermann, M. Tue .  
"Stochastic modeling of unsteady extinction in turbulent non-premixed combustion".  United States.  https://doi.org/10.1016/j.proci.2016.07.014.  https://www.osti.gov/servlets/purl/1275513.

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@article{osti_1275513,

  title        = {Stochastic modeling of unsteady extinction in turbulent non-premixed combustion},

  author       = {Lackmann, T. and Hewson, J. C. and Knaus, R. C. and Kerstein, A. R. and Oevermann, M.},

  abstractNote = {Turbulent fluctuations of the scalar dissipation rate have a major impact on extinction in non-premixed combustion. Recently, an unsteady extinction criterion has been developed (Hewson, 2013) that predicts extinction dependent on the duration and the magnitude of dissipation rate fluctuations exceeding a critical quenching value; this quantity is referred to as the dissipation impulse. Furthermore, the magnitude of the dissipation impulse corresponding to unsteady extinction is related to the difficulty with which a flamelet is exintguished, based on the steady-state S-curve.},

  doi          = {10.1016/j.proci.2016.07.014},

  journal      = {Proceedings of the Combustion Institute},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue Jul 19 00:00:00 EDT 2016},

  month        = {Tue Jul 19 00:00:00 EDT 2016}

}

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