Experimental studies of bluff-body stabilized LPG diffusion flames

Fuel ◽  
2009 ◽  
Vol 88 (3) ◽  
pp. 573-578 ◽  
Author(s):  
D.P. Mishra ◽  
D.Y. Kiran
Keyword(s):  
Bluff Body ◽  
Diffusion Flames ◽  
Experimental Studies

Experimental and computational infrared imaging of bluff body stabilized laminar diffusion flames

2012 ◽  
Vol 159 (9) ◽  
pp. 2841-2843 ◽  
Author(s):  
Brent A. Rankin ◽  
David L. Blunck ◽  
Viswanath R. Katta ◽  
Scott D. Stouffer ◽  
Jay P. Gore
Keyword(s):  
Bluff Body ◽  
Infrared Imaging ◽  
Diffusion Flames ◽  
Laminar Diffusion Flames ◽  
Laminar Diffusion

Experimental and numerical study on bluff-body and swirl stabilized diffusion flames

Fuel ◽  
2018 ◽  
Vol 217 ◽  
pp. 352-364 ◽  
Author(s):  
Yiheng Tong ◽  
Xiao Liu ◽  
Zhenkan Wang ◽  
Mattias Richter ◽  
Jens Klingmann
Keyword(s):  
Bluff Body ◽  
Diffusion Flames ◽  
Numerical Study

Combustion Oscillations in Bluff Body Stabilized Diffusion Flames With Variable Length Inlet

2009 ◽  
Vol 131 (5) ◽  
Author(s):  
M. Madanmohan ◽  
S. Pandey ◽  
A. Kushari ◽  
K. Ramamurthi
Keyword(s):  
Heat Release ◽  
Phase Angle ◽  
Bluff Body ◽  
Diffusion Flames ◽  
Combustion Process ◽  
Low Frequency ◽  
Pressure Oscillations ◽  
Pipe Length ◽  
Entry Length ◽  
Low Frequency Oscillations

This paper describes the results of an experimental study to understand the influence of inlet flow disturbances on the dynamics of combustion process in bluff body stabilized diffusion flames of liquid petroleum gas and air. The results show the influence of weak disturbances created by the change in incoming pipe length on the amplitude of pressure oscillations and the phase angle between pressure and heat release. It is seen that the phase delay increases as the entry length increases. The rms value of pressure, however, generally falls with the increase in length. The phase angle is seen to be in the second quadrant, showing that the heat release oscillations damp the pressure oscillations. Therefore, the decrease in the phase angle results in the reduction in damping and hence an increase in pressure fluctuations. The dominant frequencies of combustion oscillations are found to be the low frequency oscillations, and the frequency of oscillations increases with a decrease in the inlet pipe length and an increase in the flow Reynolds number. It is suggested that such low frequency oscillations are driven by vortex shedding at the wake of the bluff body, which energizes the diffusion and mixing process.

Numerical and experimental studies of the NO formation in laminar coflow diffusion flames on their transition to MILD combustion regime

2013 ◽  
Vol 160 (8) ◽  
pp. 1364-1372 ◽  
Author(s):  
A.V. Sepman ◽  
S.E. Abtahizadeh ◽  
A.V. Mokhov ◽  
J.A. van Oijen ◽  
H.B. Levinsky ◽  
...  
Keyword(s):  
Diffusion Flames ◽  
Experimental Studies ◽  
Combustion Regime ◽  
No Formation ◽  
Mild Combustion
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