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Experimental observation and numerical modelling of a laminar double coflow methane/air diffusion flame

  • Fengshan Liu*
  • , Wenjun Kong
  • *Corresponding author for this work
  • National Research Council of Canada
  • CAS - Institute of Engineering Thermophysics

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The effect of the central air flow rate on the structure and sooting characteristics of a laminar double coflow methane/air diffusion flame was experimentally observed and recorded by a digital camera. The double diffusion flame was generated using a modified Guider laminar coflow diffusion flame burner by introducing an air flow in the centre of the fuel pipe. Numerical calculations of the double diffusion flame at different central air flow rates were conducted by solving the elliptic conservation equations of mass, momentum, species, and energy in axisymmetric cylindrical coordinates using a standard control volume method. Detailed multi-component thermal and transport properties and detailed combustion chemistry were employed in the modelling. Soot formation was modeled using a semi-empirical acetylene based model in which two transport equations for soot mass fraction and soot number density per unit mass were solved. Thermal radiation was calculated using the discrete-ordinates method and a 9-band non-grey model for the radiative properties of the CO-CO2-H2O-soot mixture. The numerical model reproduced qualitatively the experimental observations of the effect of central air flow rate on the structure and sooting characteristics.

Original languageEnglish
Title of host publicationEnergy Systems
Subtitle of host publicationAnalysis, Thermodynamics and Sustainability
PublisherAmerican Society of Mechanical Engineers (ASME)
Pages761-768
Number of pages8
ISBN (Print)0791843009, 9780791843000
DOIs
StatePublished - 2008
Externally publishedYes
EventASME International Mechanical Engineering Congress and Exposition, IMECE 2007 - Seattle, WA, United States
Duration: 11 Nov 200715 Nov 2007

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings
Volume6

Conference

ConferenceASME International Mechanical Engineering Congress and Exposition, IMECE 2007
Country/TerritoryUnited States
CitySeattle, WA
Period11/11/0715/11/07

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