Investigation of sooting behavior and soot nanostructures of ethanol droplet flames in microgravity

2021 ◽  
Author(s):  
Seul Hyun Park
Keyword(s):  
Ethanol Droplet

The role of tree stem proximity in the spatial variability of soil water repellency in a eucalypt plantation in coastal Portugal

Soil Research ◽  
2005 ◽  
Vol 43 (3) ◽  
pp. 251 ◽  
Author(s):  
J. J. Keizer ◽  
A. J. D. Ferreira ◽  
C. O. A. Coelho ◽  
S. H. Doerr ◽  
M. C. Malvar ◽  
...  
Keyword(s):  
Soil Water ◽  
Water Repellency ◽  
Soil Water Repellency ◽  
Individual Measurement ◽  
Hydrophobic Compounds ◽  
Ethanol Droplet ◽  
Central Portugal ◽  
Living Organisms ◽  
Tree Stem

Certain organic compounds derived from living organisms or their decaying parts are generally accepted to induce soil water repellency. Water repellency may therefore be expected to increase with proximity to organisms releasing hydrophobic compounds. This hypothesis is tested here for Eucalyptus globulus trees, since eucalypt species are frequently associated with elevated repellency levels. In a young, first-rotation plantation on coastal dune sands in central Portugal, repeat measurements of water repellency using the ‘Molarity of an Ethanol Droplet’ (MED) test were carried out in situ between April 2001 and May 2002. On 25 dates, repellency was measured at initially 2 and later 3 distances on 2 sides of 8–11 randomly selected trees. On 15 occasions, additional repellency measurements were performed within small grids aside 3 of the selected trees. The postulated decrease in topsoil water repellency with increased distance from eucalypt tree stems was found to apply on several individual measurement dates, as well as, more unexpectedly since repellency usually is a transient phenomenon, for the study period as a whole. The results confirm the general association of eucalypt trees with water repellency, and indicate that tree stem proximity is an important but not sufficient factor to explain repellency distribution in topsoil.

Impingement behaviour of single ethanol droplet on a liquid film of glycerol solution

Fuel ◽  
2020 ◽  
Vol 276 ◽  
pp. 117820 ◽  
Author(s):  
Lili Lu ◽  
Yiqiang Pei ◽  
Jing Qin ◽  
Zhijun Peng ◽  
Yuqian Wang ◽  
...  
Keyword(s):  
Liquid Film ◽  
Glycerol Solution ◽  
Ethanol Droplet

New Observations of Isolated Ethanol Droplet Flames in Microgravity Conditions

2008 ◽  
Vol 180 (4) ◽  
pp. 631-651 ◽  
Author(s):  
Seul-Hyun Park ◽  
Seuk-Cheun Choi ◽  
Mun Young Choi ◽  
Ahmet Yozgatligil
Keyword(s):  
Ethanol Droplet ◽  
Microgravity Conditions

Surface temperature transition of a controllable evaporating droplet

Soft Matter ◽  
2020 ◽  
Vol 16 (41) ◽  
pp. 9568-9577
Author(s):  
Lu Shen ◽  
Junheng Ren ◽  
Fei Duan
Keyword(s):  
Surface Temperature ◽  
Droplet Evaporation ◽  
Temperature Evolution ◽  
Temperature Transition ◽  
Temperature Distributions ◽  
Ethanol Droplet ◽  
Phase Surface

Controlled ethanol droplet evaporation shows a five-phase surface temperature evolution and two transitions among the three radial surface temperature distributions.

Effects of ammonia borane on the combustion of an ethanol droplet at atmospheric pressure

2013 ◽  
Vol 160 (10) ◽  
pp. 2194-2203 ◽  
Author(s):  
Mark A. Pfeil ◽  
Lori J. Groven ◽  
Robert P. Lucht ◽  
Steven F. Son
Keyword(s):  
Atmospheric Pressure ◽  
Ammonia Borane ◽  
Ethanol Droplet
Sign in / Sign up

Export Citation Format

Share Document