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Journal of Flow Visualization and Image Processing
SJR: 0.161 SNIP: 0.312 CiteScore™: 0.5

ISSN 印刷: 1065-3090
ISSN オンライン: 1940-4336

Journal of Flow Visualization and Image Processing

DOI: 10.1615/JFlowVisImageProc.v9.i2-3.10
15 pages

THE EFFECT OF AIR-SUCTION MOMENTUM FLUX ON TURBULENT JET DIFFUSION FLAME BLOWOUT LIMIT EXTENSION IN THE INTERIM OF ANNULAR COUNTERFLOW APPLICATION

Sze Man Simon Chan
Department of Mechanical Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima, 890-0065, Japan
Shuichi Torii
Kumamoto University, Kumamoto, Japan
Toshiaki Yano
Department of Mechanical Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima, 890-0065, Japan
T. Sameshima
Department of Mechanical Engineering, Kagoshima University 1-21-40, Korimoto, Kagoshima, 890-0065, Japan

要約

Experiments are conducted to investigate the effect of a proposed combustion technique, namely annular counterflow, on jet diffusion flame blowout limit extension. Annular counterflow is formed in a concentric annulus, in which a fuel jet is ejected from a nozzle and air is sucked into an outer cylinder encompassing the nozzle. Normal video filming, schlieren technique and image processing devices are employed to record and visualize sundry flame morphologies triggered by this technique. Results show that the preponderant factor governing such an extension is the air-suction momentum flux.


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