Physical Insights into the Flameless Combustion of Methane under MILD combustion conditions

Efstathios-Al. Tingas, Dimitris M. Manias, Yuki Minamoto, Hong G. Im

Research output: Contribution to conferenceAbstract

Abstract

Moderate or intense low-oxygen dilution (MILD) combustion is a promising technology for energy efficient industrial combustors. Many experimental studies have been carried out on the parameters that characterize the dynamics of this type of combustion, which is associated with intense preheating and dilution. Yet, there is limited understanding about the physical processes that characterize this mode of combustion, which makes it difficult to maintain and to model MILD combustion at different operating conditions. To this end, the mathematical tools provided by the computational singular perturbation (CSP) method can be applied to systematically analyze the relevant physics, by identifying the important dynamical characteristics driven by the key processes. In the current work, CSP tools are used to analyze the dynamics of an EGR-type methane/air premixed flame under MILD combustion conditions that was previously generated in the context of DNS and compare it with a conventional turbulent methane flame. In addition, the topological characteristics of these two flames are identified and compared.
Original languageEnglish
Publication statusPublished - Nov 2018
Event71st Annual Meeting of the APS Division of Fluid Dynamics
- Atlanta, Atlanta, GA, United States
Duration: 18 Nov 201820 Nov 2018
https://meetings.aps.org/Meeting/DFD18/

Conference

Conference71st Annual Meeting of the APS Division of Fluid Dynamics
Abbreviated title71st APS
CountryUnited States
CityAtlanta, GA
Period18/11/1820/11/18
Internet address

Fingerprint Dive into the research topics of 'Physical Insights into the Flameless Combustion of Methane under MILD combustion conditions'. Together they form a unique fingerprint.

  • Cite this

    Tingas, E-A., Manias, D. M., Minamoto, Y., & Im, H. G. (2018). Physical Insights into the Flameless Combustion of Methane under MILD combustion conditions. Abstract from 71st Annual Meeting of the APS Division of Fluid Dynamics
    , Atlanta, GA, United States. https://meetings.aps.org/Meeting/DFD18/Session/G02.3