Experimental study on correlation between PAHs and soot in laminar co-flow diffusion flames of n-heptane at elevated pressure

Fuel ◽  
2022 ◽  
Vol 309 ◽  
pp. 122107
Author(s):  
Yu Cai ◽  
Zijian Zhang ◽  
Lei Zhou
Keyword(s):  
Experimental Study ◽  
Diffusion Flames ◽  
Elevated Pressure

scholarly journals Factors Contributing to Increased Blast Overpressure Inside Modern Ballistic Helmets

2020 ◽  
Vol 10 (20) ◽  
pp. 7193
Author(s):  
Maciej Skotak ◽  
Jonathan Salib ◽  
Anthony Misistia ◽  
Arturo Cardenas ◽  
Eren Alay ◽  
...  
Keyword(s):  
Experimental Study ◽  
Shock Tube ◽  
Principle Component Analysis ◽  
Hot Spots ◽  
Shape Factor ◽  
Elevated Pressure ◽  
Focal Points ◽  
Parietal Region ◽  
Blast Overpressure ◽  
Pressure Fields

This study demonstrates the orientation and the "shape factor" have pronounced effects on the development of the localized pressure fields inside of the helmet. We used anatomically accurate headform to evaluate four modern combat helmets under blast loading conditions in the shock tube. The Advanced Combat Helmet (ACH) is used to capture the effect of the orientation on pressure under the helmet. The three modern combat helmets: Enhanced Combat Helmet (ECH), Ops-Core, and Airframe, were tested in frontal orientation to determine the effect of helmet geometry. Using the unhelmeted headform data as a reference, we characterized pressure distribution inside each helmet and identified pressure focal points. The nature of these localized “hot spots” is different than the elevated pressure in the parietal region of the headform under the helmet widely recognized as the under-wash effect also observed in our tests. It is the first experimental study which indicates that the helmet presence increased the pressure experienced by the eyes and the forehead (glabella). Pressure fingerprinting using an array of sensors combined with the application of principle component analysis (PCA) helped elucidate the subtle differences between helmets.

scholarly journals An experimental study of vortex-flame interaction in counterflow spray diffusion flames

2000 ◽  
Vol 28 (1) ◽  
pp. 1023-1030 ◽  
Author(s):  
Vito S. Santoro ◽  
Dimitrios C. Kyritsis ◽  
Alessandro Gomez
Keyword(s):  
Experimental Study ◽  
Diffusion Flames

scholarly journals J31 Experimental study of autoignition and extinction of DME diffusion flames in nonuniform flows

2007 ◽  
Vol 2007.60 (0) ◽  
pp. 369-370
Author(s):  
Junji Umeda ◽  
Wataru Mieno ◽  
Tomohiro Miyahara ◽  
Kimitosi Tanoue ◽  
Fumio Shimada
Keyword(s):  
Experimental Study ◽  
Diffusion Flames ◽  
Nonuniform Flows

An Experimental Study on Low Frequency Oscillation and Flame-Generated Turbulence in Premixed/Diffusion Flames

1982 ◽  
Vol 27 (3-4) ◽  
pp. 103-111 ◽  
Author(s):  
RYUICHI MATSUMOTO ◽  
TSUYOSHI NAKAJIMA ◽  
KYOJI KIMOTO ◽  
SUSUMU NO DA ◽  
SHODO MAEDA
Keyword(s):  
Experimental Study ◽  
Diffusion Flames ◽  
Low Frequency ◽  
Frequency Oscillation ◽  
Low Frequency Oscillation
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