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research-article

Influence of Micro-Lobed Burner on the Non-premixed Combustion of Methane and Oxygen

[+] Author and Article Information
Yi Xie

School of Automotive Engineering, Chongqing University, Chongqing, 400044, China Chongqing, 400044 China claudexie@hotmail.com

Chuan-li Yi

No.174 Shazhengjie, Shapingba Chongqing, 400044 China 158761605@qq.com

1Corresponding author.

Contributed by the Heat Transfer Division of ASME for publication in the Journal of Thermal Science and Engineering Applications. Manuscript received December 9, 2018; final manuscript received May 27, 2019; published online xx xx, xxxx. Assoc. Editor: Matthew Oehlschlaeger.

ASME doi:10.1115/1.4043913 History: Received December 09, 2018; Accepted May 27, 2019

Abstract

Non-premixed combustion was implemented in a micro lobed combustion system. Its influence on combustion was studied by using experiment and simulation. Results show that micro lobed burner produces streamwise vortices and their intensity increases with equivalence ratio. Because of streamwise vortices and increment of contact area between methane and oxygen, methane mixes with oxygen well in the micro lobed burner, and it has bigger OH mass fraction and higher temperature than micro splitter burner. Near lobe exit, equivalence ratio of methane to oxygen (F) greatly affects the combustion enhancement of micro lobed burner. When F increases from 0.6 to 1.4, difference of highest temperature between micro lobed burner and micro splitter burner falls from 171K to 44K. In the phase when combustion is controlled by diffusion of shear layer, F affects combustion enhancement of micro lobed burner little. Dfference of highest combustion temperature changes little with F.

Copyright © 2019 by ASME
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