Topology of local flame-flame interaction events in turbulent flames

Ankit Tyagi, Isaac Boxx, Ryan Shupp, Stephen J. Peluso, Jacqueline Antonia O'Connor

    Research output: Contribution to conferencePaper

    Abstract

    A large number of modern combustion devices have multiple, closely-spaced turbulent flames that interact with each other, resulting in interacting flowfields as well as scalar fields. The local structure and dynamics of adjacent flames is dependent on both these interacting fields. Local flame-flame interaction occurs frequently in turbulent flames, occasionally resulting in formation of unburned gas pockets, and in some cases, burned gas pockets. Unburned gas pockets can be a source of harmful pollutants, as they may result in toxic fuel emissions. The topology of interaction events can vary significantly in the presence of adjacent flames and it becomes crucial to understand the sensitivity of these flames to these local interaction events for improving the design and operability of multi-flame devices. In this study, we investigate two interacting premixed flames in a dual burner configuration and apply high-speed OH-planar laser-induced fluorescence (OH-PLIF) to obtain instantaneous flame-front locations of Bunsen flames. A non-rigid image registration technique is applied to flame images to track the topological changes occurring in small time steps. Flame-flame interaction events are identified using this technique and statistics conditioned on these events are compared. In particular, results are compared between single- and dual-burner configurations to illustrate the differences that interacting flames have on flame topology. Statistics of flame-flame interactions that result in flame pockets are also discussed.

    Original languageEnglish (US)
    StatePublished - Jan 1 2018
    Event2018 Spring Technical Meeting of the Eastern States Section of the Combustion Institute, ESSCI 2018 - State College, United States
    Duration: Mar 4 2018Mar 7 2018

    Other

    Other2018 Spring Technical Meeting of the Eastern States Section of the Combustion Institute, ESSCI 2018
    CountryUnited States
    CityState College
    Period3/4/183/7/18

    Fingerprint

    flame interaction
    turbulent flames
    flames
    topology
    Gases
    Topology
    Fuel burners
    Statistics
    gas pockets
    Poisons
    Image registration
    Fluorescence
    Lasers
    burners
    statistics
    premixed flames
    flame propagation
    configurations
    laser induced fluorescence

    All Science Journal Classification (ASJC) codes

    • Mechanical Engineering
    • Physical and Theoretical Chemistry
    • Chemical Engineering(all)

    Cite this

    Tyagi, A., Boxx, I., Shupp, R., Peluso, S. J., & O'Connor, J. A. (2018). Topology of local flame-flame interaction events in turbulent flames. Paper presented at 2018 Spring Technical Meeting of the Eastern States Section of the Combustion Institute, ESSCI 2018, State College, United States.
    Tyagi, Ankit ; Boxx, Isaac ; Shupp, Ryan ; Peluso, Stephen J. ; O'Connor, Jacqueline Antonia. / Topology of local flame-flame interaction events in turbulent flames. Paper presented at 2018 Spring Technical Meeting of the Eastern States Section of the Combustion Institute, ESSCI 2018, State College, United States.
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    title = "Topology of local flame-flame interaction events in turbulent flames",
    abstract = "A large number of modern combustion devices have multiple, closely-spaced turbulent flames that interact with each other, resulting in interacting flowfields as well as scalar fields. The local structure and dynamics of adjacent flames is dependent on both these interacting fields. Local flame-flame interaction occurs frequently in turbulent flames, occasionally resulting in formation of unburned gas pockets, and in some cases, burned gas pockets. Unburned gas pockets can be a source of harmful pollutants, as they may result in toxic fuel emissions. The topology of interaction events can vary significantly in the presence of adjacent flames and it becomes crucial to understand the sensitivity of these flames to these local interaction events for improving the design and operability of multi-flame devices. In this study, we investigate two interacting premixed flames in a dual burner configuration and apply high-speed OH-planar laser-induced fluorescence (OH-PLIF) to obtain instantaneous flame-front locations of Bunsen flames. A non-rigid image registration technique is applied to flame images to track the topological changes occurring in small time steps. Flame-flame interaction events are identified using this technique and statistics conditioned on these events are compared. In particular, results are compared between single- and dual-burner configurations to illustrate the differences that interacting flames have on flame topology. Statistics of flame-flame interactions that result in flame pockets are also discussed.",
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    Tyagi, A, Boxx, I, Shupp, R, Peluso, SJ & O'Connor, JA 2018, 'Topology of local flame-flame interaction events in turbulent flames' Paper presented at 2018 Spring Technical Meeting of the Eastern States Section of the Combustion Institute, ESSCI 2018, State College, United States, 3/4/18 - 3/7/18, .

    Topology of local flame-flame interaction events in turbulent flames. / Tyagi, Ankit; Boxx, Isaac; Shupp, Ryan; Peluso, Stephen J.; O'Connor, Jacqueline Antonia.

    2018. Paper presented at 2018 Spring Technical Meeting of the Eastern States Section of the Combustion Institute, ESSCI 2018, State College, United States.

    Research output: Contribution to conferencePaper

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    AU - Tyagi, Ankit

    AU - Boxx, Isaac

    AU - Shupp, Ryan

    AU - Peluso, Stephen J.

    AU - O'Connor, Jacqueline Antonia

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    N2 - A large number of modern combustion devices have multiple, closely-spaced turbulent flames that interact with each other, resulting in interacting flowfields as well as scalar fields. The local structure and dynamics of adjacent flames is dependent on both these interacting fields. Local flame-flame interaction occurs frequently in turbulent flames, occasionally resulting in formation of unburned gas pockets, and in some cases, burned gas pockets. Unburned gas pockets can be a source of harmful pollutants, as they may result in toxic fuel emissions. The topology of interaction events can vary significantly in the presence of adjacent flames and it becomes crucial to understand the sensitivity of these flames to these local interaction events for improving the design and operability of multi-flame devices. In this study, we investigate two interacting premixed flames in a dual burner configuration and apply high-speed OH-planar laser-induced fluorescence (OH-PLIF) to obtain instantaneous flame-front locations of Bunsen flames. A non-rigid image registration technique is applied to flame images to track the topological changes occurring in small time steps. Flame-flame interaction events are identified using this technique and statistics conditioned on these events are compared. In particular, results are compared between single- and dual-burner configurations to illustrate the differences that interacting flames have on flame topology. Statistics of flame-flame interactions that result in flame pockets are also discussed.

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    Tyagi A, Boxx I, Shupp R, Peluso SJ, O'Connor JA. Topology of local flame-flame interaction events in turbulent flames. 2018. Paper presented at 2018 Spring Technical Meeting of the Eastern States Section of the Combustion Institute, ESSCI 2018, State College, United States.