The Experimental and Numerical Approach of Catalytic Combustion on Noble Metals Disc Burners of the Turbulent Gaseous Fuel Jet Diffusion Flames

2012 ◽  
Vol 34 (6) ◽  
pp. 492-507 ◽  
Author(s):  
S. F. Deriase ◽  
S. A. Ghoneim ◽  
A. S. Zakhary ◽  
A. K. Aboul-Gheit
Keyword(s):  
Catalytic Combustion ◽  
Noble Metals ◽  
Diffusion Flames ◽  
Numerical Approach ◽  
Gaseous Fuel ◽  
Jet Diffusion Flames ◽  
Fuel Jet

A new mathematical method for quantifying trajectory of buoyant line-source gaseous fuel jet diffusion flames in cross air flows

Fuel ◽  
2016 ◽  
Vol 177 ◽  
pp. 107-112 ◽  
Author(s):  
Xiaochun Zhang ◽  
Wenhao Xu ◽  
Longhua Hu ◽  
Xiaozhou Liu ◽  
XiaoLei Zhang ◽  
...  
Keyword(s):  
Mathematical Method ◽  
Line Source ◽  
Diffusion Flames ◽  
Gaseous Fuel ◽  
Jet Diffusion Flames ◽  
Fuel Jet ◽  
Air Flows

Examination of the Flame Blowout Characteristics of a Jet Diffusion Flames Burner in Co- and Cross-Flowing Air

2002 ◽  
Author(s):  
M. G. Kibrya ◽  
G. A. Karim
Keyword(s):  
Diffusion Flame ◽  
Diffusion Flames ◽  
Cross Flow ◽  
Jet Fuel ◽  
Flow Conditions ◽  
Uniform Velocity ◽  
Jet Diffusion Flames ◽  
Surrounding Atmosphere ◽  
Fuel Jet ◽  
Air Streams

The blowout limit of a jet diffusion flame was shown experimentally to improve significantly through the introduction of an auxiliary fuel in the surrounding air. A small experimental burner was devised so that the auxiliary fuel could be introduced and controlled independently of the main jet fuel, through a number of small pilot jets uniformly distributed around the main central fuel jet. This burner arrangement eliminated the likelihood of a flame flashing back into the surrounding atmosphere and some fuel escaping combustion. The burner was tested with methane as the fuel both for the main jet and the auxiliary side jets. Tests were made for both co-flow and cross-flow air streams of uniform velocity. It is shown that the arrangement adopted for auxiliary fuel introduction produced improvements in the flame blowout limits of the burner under both types of surrounding flow conditions. For the conditions considered, the blowout limits were of higher values in cross flow than for the corresponding co-flowing air streams.

Flame Blowoff Limit Phenomenon of Turbulent Jet Diffusion Flames With Annular Counterflow

2002 ◽  
Author(s):  
Shuichi Torii ◽  
Sze Man Simon Chan ◽  
Toshiaki Yano
Keyword(s):  
Diffusion Flames ◽  
Outer Cylinder ◽  
Turbulent Jet ◽  
Turbulent Shear ◽  
Jet Diffusion Flames ◽  
Opposed Flow ◽  
Fuel Jet ◽  
Experimental Apparatus ◽  
Normal Diffusion ◽  
Lift Off

The present study deals with the transport phenomena of turbulent jet diffusion flames with air-suction flow and the possibility of extending the flame blow-off limits through the shear stress augmentation using the annular counterflow technique. The experimental apparatus employed here comprises a fuel nozzle placed at the center of a concentric annulus with an outer cylinder adopted to encompass the nozzle. Fuel jet is allowed to eject upwards and turbulent jet diffusion flames are formed by igniting the jet and by increasing the volume flow rates of fuel. It is found that (1) the augmentation of turbulent shear effect exerted on the shear layer formed between the jet flames and the opposed flow of air causes an extension of flame blowoff limits, (2) by using the annular counterflow technique, the flame lift-off height is suppressed than the normal diffusion flame, and (3) its height is correlated using the effective air-suction momentum flux proposed here.

Effects of partial gravity and g-jitter radiation from jet diffusion flames

1997 ◽  
Author(s):  
M. Bahadori ◽  
L. Zhou ◽  
D. Stocker ◽  
M. Bahadori ◽  
L. Zhou ◽  
...  
Keyword(s):  
Diffusion Flames ◽  
Jet Diffusion Flames ◽  
Partial Gravity ◽  
Jitter Radiation

A PIV investigation of weakly buoyant laminar jet diffusion flames

2000 ◽  
Author(s):  
Mark Wernet ◽  
Paul Greenberg ◽  
Peter Sunderland ◽  
William Yanis
Keyword(s):  
Diffusion Flames ◽  
Laminar Jet ◽  
Jet Diffusion Flames

The blowout mechanism of turbulent jet diffusion flames

2006 ◽  
Vol 145 (3) ◽  
pp. 481-494 ◽  
Author(s):  
Chih-Yung Wu ◽  
Yei-Chin Chao ◽  
Tsarng-Sheng Cheng ◽  
Yueh-Heng Li ◽  
Kuo-Yuan Lee ◽  
...  
Keyword(s):  
Diffusion Flames ◽  
Turbulent Jet ◽  
Jet Diffusion Flames
Sign in / Sign up

Export Citation Format

Share Document