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ISBN : 978-1-56700-478-6

Proceedings of the 24th National and 2nd International ISHMT-ASTFE Heat and Mass Transfer Conference (IHMTC-2017)
2017, December 27-30 , BITS Pilani, Hyderabad, India

MODELING INTERACTION OF A NON-PREMIXED JET FLAME WITH A STANDING WAVE

Get access DOI: 10.1615/IHMTC-2017.270
pages 193-199

Abstract

A numerical investigation has been carried out to study the interaction of a non-premixed jet diffusion flame with a standing wave produced in a tube. ANSYS FLUENT is used to model the configuration with acoustic perturbations imposed through user defined function (UDF). The turbulent flow field is modeled using widely used k−ε turbulence model. Two different combustion models are compared, namely Eddy Dissipation Model (EDM) and Non-premixed Model (NPM). Keeping the fuel injector position fixed, flame excitation with respect to two acoustic forcing frequencies (220Hz and 375Hz) are investigated. The simulations are able to predict the pressure antinodes as well as static pressure along the tube length. It is observed that Eddy Dissipation Model is able to capture the flame dynamics better than non-premixed model.
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