Flame Behaviors Near Extinction Limit in Laminar Lifted Coflow-Jet Flames

2019 ◽  
Vol 24 (1) ◽  
pp. 1-6
Author(s):  
Suhyeon Oh ◽  
Suhyeon Oh ◽  
Jeong Park ◽  
Ohboong Kwon ◽  
Sewon Kim ◽  
...  
Keyword(s):  
Jet Flames ◽  
Extinction Limit ◽  
Near Extinction

Production of Diffusion Flames in the Near Extinction Limit Regime Using a Hele-Shaw Apparatus in a Simulated Low Gravity Environment

2001 ◽  
Author(s):  
Lisa M. Oravecz-Simpkins ◽  
Indrek S. Wichman
Keyword(s):  
Diffusion Flames ◽  
Space Station ◽  
Scaling Analysis ◽  
Test Results ◽  
Low Gravity ◽  
Flame Instability ◽  
Extinction Limit ◽  
Maximum Test ◽  
Near Extinction ◽  
Flame Instabilities

Abstract A Hele-Shaw apparatus that produced spreading diffusion flames in the near extinction limit was designed and constructed. A scaling analysis was used to determine the maximum test section height for which effects of gravity could be neglected. Preliminary results showed that this apparatus could be used to produce flame instabilities which resemble drop tower test results from NASA [1,2] and other diffusion flame instability studies [3,4,5,6]. Therefore, the Hele-Shaw apparatus is useful for studying flames in a simulated low gravity environment. Additional unstable behaviors seen in the device, such as flame pulsing and spreading blue cusps, not in the NASA testing further supported the need for investigations during longer microgravity times on the International Space Station. The initial testing was only used to gain an observable region of unstable flames. Further studies will be directed at explaining and quantifying specific behaviors with test conditions.

scholarly journals Behavior of Flame Spread on Thin PMMA near Extinction Limit at Low Oxygen Level

2012 ◽  
Vol 10 (ists28) ◽  
pp. Ph_9-Ph_13 ◽  
Author(s):  
Shuhei TAKAHASHI ◽  
Takeshi NAGATA ◽  
Makoto HOTTA ◽  
Subrata BHATTACHARJEE ◽  
Tadayoshi IHARA ◽  
...  
Keyword(s):  
Flame Spread ◽  
Oxygen Level ◽  
Low Oxygen ◽  
Extinction Limit ◽  
Near Extinction

Cell formation in non-premixed, axisymmetric jet flames near extinction

2003 ◽  
Vol 7 (4) ◽  
pp. 635-644 ◽  
Author(s):  
David Lo Jacono ◽  
Paul Papas ◽  
Peter A Monkewitz
Keyword(s):  
Cell Formation ◽  
Jet Flames ◽  
Axisymmetric Jet ◽  
Near Extinction

Mixing in jet flames by laser Rayleigh scattering

1983 ◽  
Author(s):  
D. YEE ◽  
P. MALTE ◽  
P. KAMBER
Keyword(s):  
Rayleigh Scattering ◽  
Jet Flames
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