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Thermal Structure and Flow Field Characteristics of a Modified Inverse Jet Diffusion Flame Burner

[+] Author Affiliations
Sherif Amin, Ahmed Emara, Adel Hussien, Ibrahim Shabaka

Helwan University, Cairo, Egypt

Paper No. IMECE2014-38030, pp. V007T09A053; 6 pages
  • ASME 2014 International Mechanical Engineering Congress and Exposition
  • Volume 7: Fluids Engineering Systems and Technologies
  • Montreal, Quebec, Canada, November 14–20, 2014
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4954-5
  • Copyright © 2014 by ASME


The study of aerodynamic behavior of turbulent coaxial and annular jets is of great interest in many engineering applications as, for instance, the design of a new generation of industrial burners. This investigation concerns the combustion process in a triple path inverse jet diffusion flame burner in which a gaseous fuel is inserted in the middle of the second jet. A comparison between the middle fuel co-annular jet (COA, case I) and the circumferential arranged fuel ports (CAP, case II) is performed at constant projectile area (as listed in Table.1). A numerical simulation is conducted to predict the flame structure using ANSYS-CFX program.

The present work experimentally investigates the thermal (inflame temperature) conditions as well as other physical properties. The planar flow field was visualized in both burner configurations. The effect of burner loading and velocity ratio of inner to outer air annuals jets on the flame structure is investigated at unity equivalence ratio. The flammability limit is expected to be changed for CAP and COA configurations as the velocity ratio increases since no lifted flame is predicted at high velocities.

Copyright © 2014 by ASME



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