spread velocity
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2021 ◽  
Vol 2 (7) ◽  
pp. 602-603
Author(s):  
Luisetto M ◽  
Naseer Al-Mukthar

COVID-19 and the new variant are a classic example of viral and environmental toxicology link. Observing literature related spread velocity and diffusion of this respiratory virus it is clear the role played by air pollution. The high rate of this environmental pollutant produced a worsening factors that increased mortality rate also.


2019 ◽  
Vol 37 (3) ◽  
pp. 3757-3765 ◽  
Author(s):  
Koshi Funashima ◽  
Ayaka Masuyama ◽  
Kazunori Kuwana ◽  
Genichiro Kushida

2017 ◽  
Vol 26 (12) ◽  
pp. 1398-1407 ◽  
Author(s):  
Nicky Lustenhouwer ◽  
Emily V. Moran ◽  
Jonathan M. Levine

2017 ◽  
Vol 111 ◽  
pp. 420-430 ◽  
Author(s):  
S.C. Li ◽  
D.F. Huang ◽  
N. Meng ◽  
L.F. Chen ◽  
L.H. Hu

Optik ◽  
2016 ◽  
Vol 127 (23) ◽  
pp. 11220-11224 ◽  
Author(s):  
J.X. Cai ◽  
H. Li ◽  
X. Qu ◽  
G.Y. Jin

2012 ◽  
Vol 134 (4) ◽  
Author(s):  
Seik Mansoor Ali ◽  
Vasudevan Raghavan ◽  
K. Velusamy ◽  
Shaligram Tiwari

Concurrent flame spread over methanol pool surface under atmospheric conditions and normal gravity has been numerically investigated using a transient, two-phase, reacting flow model. The average flame spread velocities for different concurrent air velocities predicted using the model are quite close to the experimental data available in the literature. As the air velocity is increased, the fuel consumption rate increases and aids in faster flame spread process. The flame initially anchors around the leading edge of the pool and the flame tip spreads over the pool surface. The rate of propagation of flame tip along the surface is seen to be steady without fluctuations. The flame spread velocity is found to be nonuniform as the flame spreads along the pool surface. The flame spread velocity is seen to be higher initially. It then decreases up to a point when the flame has propagated to around 40% to 50% of the pool length. At this position, a secondary flame anchoring point is observed, which propagates toward the trailing edge of the pool. As a result, there is an increasing trend observed in the flame spread velocity. As the air velocity is increased, the initial flame anchoring point moves downstream of the leading edge of the fuel pool. The variations of interface quantities depend on the initial flame anchoring location and the attainment of thermodynamic equilibrium between the liquid- and gas-phases.


2011 ◽  
Vol 7 (3) ◽  
pp. 1378-1384
Author(s):  
Baeshov Abduali ◽  
Ivanov Nikolay ◽  
Myrzabekov Begzat

The method of productiion of the composite selenium-graphitic electrodes based on organic polymer binder was proposed. Electrochemical behavior of the elementary selenium as content of composite electrode in sulfuric acid medium was assessed. A formation of hydrogen selenide during the cathode polarization, and formation of selenite and selenate ions was shown. An influence of potential spread velocity, acid concentration, and temperature of electrolyte were evaluated. Effective activation power for cathode process was estimated using the temperature-cathodic method.


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