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Investigation of Flame Structure for Laminar Methane/Air Flame Impinging on a Flat Surface

[+] Author Affiliations
Subhash Chander

National Institute of Technology, Jalandhar, PB, India

Anjan Ray

Indian Institute of Technology Delhi, New Delhi, India

Paper No. HT2009-88195, pp. 63-71; 9 pages
  • ASME 2009 Heat Transfer Summer Conference collocated with the InterPACK09 and 3rd Energy Sustainability Conferences
  • Volume 3: Combustion, Fire and Reacting Flow; Heat Transfer in Multiphase Systems; Heat Transfer in Transport Phenomena in Manufacturing and Materials Processing; Heat and Mass Transfer in Biotechnology; Low Temperature Heat Transfer; Environmental Heat Transfer; Heat Transfer Education; Visualization of Heat Transfer
  • San Francisco, California, USA, July 19–23, 2009
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 978-0-7918-4358-1 | eISBN: 978-0-7918-3851-8
  • Copyright © 2009 by ASME


A combined experimental and numerical study has been conducted to investigate the impinging flame structure. Inflame temperature profiles were obtained and compared with corresponding simulated profiles. For detailed understanding of flame structure numerical simulations were carried out using commercial CFD code FLUENT. Simulated temperature, heat flux and species profiles were analyzed. Further investigations were done by plotting streamlines, velocity magnitude profiles and species profiles. It has been seen that bulk of the combustion products were burnt rapidly in the narrow reaction zone at the tip of the flame. This was because of exponential relationship between the chemical reaction rate and temperature. Simulation results show high temperature in the region between the inner premixed and the outer non-premixed (diffusion) reaction zones. The burnt gas along the inner zone expands and molecules change their directions from initially parallel to diverging lines. Flow accelerated from stagnation point and attained maximum velocity at the start of wall-jet region.

Copyright © 2009 by ASME
Topics: Flames , Methane



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