526 Study on analysis of thermo-flow field in impinging jet flame during line heating

2001 ◽  
Vol 2001.14 (0) ◽  
pp. 585-586
Author(s):  
Junji SAWAMURA ◽  
Yasumitsu TOMITA ◽  
Naoki OSAWA ◽  
Kiyoshi HASHIMOTO
Keyword(s):  
Flow Field ◽  
Impinging Jet ◽  
Line Heating ◽  
Jet Flame

scholarly journals Study on Combustion Analysis in the Impinging Jet Flame during Line Heating Process

2001 ◽  
Vol 2001 (190) ◽  
pp. 489-497
Author(s):  
Junji Sawamura ◽  
Yasumitsu Tomita ◽  
Naoki Osawa ◽  
Kiyoshi Hashimoto ◽  
Nobutaka Shinkai
Keyword(s):  
Impinging Jet ◽  
Heating Process ◽  
Combustion Analysis ◽  
Line Heating ◽  
Jet Flame

Effect of strain rate on NOx emission in opposed impinging jet flame combustor

2002 ◽  
pp. 527-539
Author(s):  
S. Lim ◽  
Y. Yoon ◽  
C. Lee ◽  
I.-S. Jeung
Keyword(s):  
Strain Rate ◽  
Impinging Jet ◽  
Nox Emission ◽  
Jet Flame

Response Dynamics of Recirculation Structures in Coaxial Nonpremixed Swirl-Stabilized Flames Subjected to Acoustic Forcing

2015 ◽  
Vol 8 (1) ◽  
Author(s):  
Uyi Idahosa ◽  
R. Santhosh ◽  
Ankur Miglani ◽  
Saptarshi Basu
Keyword(s):  
Aspect Ratio ◽  
Flow Field ◽  
Fluid Dynamic ◽  
High Energy ◽  
Reacting Flow ◽  
Flow State ◽  
Response Dynamics ◽  
Jet Flame ◽  
Flame Response ◽  
Acoustic Forcing

This paper reports the time-mean and phase-locked response of nonreacting as well as reacting flow field in a coaxial swirling jet/flame (nonpremixed). Two distinct swirl intensities plus two different central pipe flow rates at each swirl setting are investigated. The maximum response is observed at the 105 Hz mode in the range of excitation frequencies (0–315 Hz). The flow/flame exhibited minimal response beyond 300 Hz. It is seen that the aspect ratio change of inner recirculation zone (IRZ) under nonreacting conditions (at responsive modes) manifests as a corresponding increase in the time-mean flame aspect ratio. This is corroborated by ∼25% decrease in the IRZ transverse width in both flame and cold flow states. In addition, 105 Hz excited states are found to shed high energy regions (eddies) asymmetrically when compared to dormant 315 Hz pulsing frequency. The kinetic energy (KE) of the flow field is subsequently reduced due to acoustic excitation and a corresponding increase (∼O (1)) in fluctuation intensity is witnessed. The lower swirl intensity case is found to be more responsive than the high swirl case as in the former flow state the resistance offered by IRZ to incoming acoustic perturbations is lower due to inherently low inertia. Next, the phase-locked analysis of flow and flame structure is employed to further investigate the phase dependence of flow/flame response. It is found that the asymmetric shifting of IRZ mainly results at 270 deg acoustic forcing. The 90 deg phase angle forcing is observed to convect the IRZ farther downstream in both swirl cases as compared to other phase angles. The present work aims primarily at providing a fluid dynamic view point to the observed nonpremixed flame response without considering the confinement effects.

Extinction of an evolving jet flame under a linearly-varying flow field

2004 ◽  
Vol 8 (1) ◽  
pp. 85-95 ◽  
Author(s):  
Eui Ju Lee ◽  
Hyun Dong Shin
Keyword(s):  
Flow Field ◽  
Jet Flame

Thermal Characterization of a Dual Impinging Jet Flow Field with a Heated Jet

2016 ◽  
Author(s):  
Nicholas A. Rudenko ◽  
Scott Hromisin ◽  
Dennis K. McLaughlin
Keyword(s):  
Flow Field ◽  
Impinging Jet ◽  
Thermal Characterization ◽  
Jet Flow ◽  
Heated Jet

10307 Flow Field and Pressure Distribution of Impinging Jet on a Flat Plate

2006 ◽  
Vol 2006.12 (0) ◽  
pp. 345-346
Author(s):  
Hiromasa SUZUKI ◽  
Junjiro IWAMOTO ◽  
Kousyou MOTOHASHI
Keyword(s):  
Flow Field ◽  
Pressure Distribution ◽  
Flat Plate ◽  
Impinging Jet

Experimental investigation on the mean flow field and impact force of a semi-confined round impinging jet

2015 ◽  
Vol 47 (2) ◽  
pp. 025501 ◽  
Author(s):  
X K Wang ◽  
G-P Niu ◽  
S-Q Yuan ◽  
J X Zheng ◽  
S K Tan
Keyword(s):  
Experimental Investigation ◽  
Flow Field ◽  
Impact Force ◽  
Impinging Jet ◽  
Mean Flow ◽  
The Mean
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