scholarly journals Droplet fragmentation using a mesh

2018 ◽  
Vol 3 (8) ◽  
Author(s):  
Dan Soto ◽  
Henri-Louis Girard ◽  
Antoine Le Helloco ◽  
Thomas Binder ◽  
David Quéré ◽  
...  
Keyword(s):  
Droplet Fragmentation

Micro-explosive droplet fragmentation of environmentally promising coal-water slurries containing petrochemicals

Fuel ◽  
2021 ◽  
Vol 283 ◽  
pp. 118949
Author(s):  
D.V. Antonov ◽  
G.S. Nyashina ◽  
P.A. Strizhak ◽  
D.S. Romanov
Keyword(s):  
Droplet Fragmentation

Numerical study of droplet fragmentation during impact on mesh screens

2019 ◽  
Vol 23 (12) ◽  
Author(s):  
Wang Liwei ◽  
Wu Xiao ◽  
Yu Weijie ◽  
Hao Pengfei ◽  
He Feng ◽  
...  
Keyword(s):  
Numerical Study ◽  
Droplet Fragmentation

Secondary Ice Production upon Freezing of Freely Falling Drizzle Droplets

2020 ◽  
Vol 77 (8) ◽  
pp. 2959-2967 ◽  
Author(s):  
Alice Keinert ◽  
Dominik Spannagel ◽  
Thomas Leisner ◽  
Alexei Kiselev
Keyword(s):  
Pure Water ◽  
Free Fall ◽  
Terminal Velocity ◽  
Sea Salt ◽  
Ice Formation ◽  
Formation Mechanisms ◽  
Ice Multiplication ◽  
Ice Production ◽  
Droplet Shattering ◽  
Droplet Fragmentation

Abstract Ice multiplication processes are known to be responsible for the higher concentration of ice particles versus ice nucleating particles in clouds, but the exact secondary ice formation mechanisms remain to be quantified. Recent in-cloud observations and modeling studies have suggested the importance of secondary ice production upon shattering of freezing drizzle droplets. In one of our previous studies, four categories of secondary ice formation during freezing of supercooled droplets have been identified: breakup, cracking, jetting, and bubble bursts. In this work, we extend the study to include pure water and an aqueous solution of analog sea salt drizzle droplets moving at terminal velocity with respect to the surrounding cold humid air. We observe an enhancement in the droplet shattering probability as compared to the stagnant air conditions used in the previous study. Under free-fall conditions, bubble bursts are the most common secondary ice production mode in sea salt drizzle droplets, while droplet fragmentation controls the secondary ice production in pure water droplets.

Dissipation of shock wave in a gas-droplet mixture by droplet fragmentation

2012 ◽  
Vol 55 (4) ◽  
pp. 941-957 ◽  
Author(s):  
Geum-Su Yeom ◽  
Keun-Shik Chang
Keyword(s):  
Shock Wave ◽  
Droplet Fragmentation ◽  
Droplet Mixture

Role of cohesive energy in droplet fragmentation

2011 ◽  
Vol 84 (5) ◽  
Author(s):  
Si Neng Sun ◽  
Herbert M. Urbassek
Keyword(s):  
Cohesive Energy ◽  
Droplet Fragmentation

scholarly journals Liquid tin droplet fragmentation by ultra-short laser pulse

2019 ◽  
Vol 1147 ◽  
pp. 012067
Author(s):  
S Yu Grigoryev ◽  
S A Dyachkov ◽  
V A Khokhlov ◽  
V V Zhakhovsky ◽  
A N Parshikov ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Short Laser Pulse ◽  
Liquid Tin ◽  
Droplet Fragmentation

scholarly journals Continuous secondary ice production initiated by updrafts through the melting layer in mountainous regions

2020 ◽  
Author(s):  
Annika Lauber ◽  
Jan Henneberger ◽  
Claudia Mignani ◽  
Fabiola Ramelli ◽  
Julie T. Pasquier ◽  
...  
Keyword(s):  
Number Concentration ◽  
Ice Crystals ◽  
Radiation Budget ◽  
Ice Crystal ◽  
High Concentration ◽  
Melting Layer ◽  
Mountainous Regions ◽  
Ice Production ◽  
Droplet Fragmentation ◽  
Precipitation Formation

Abstract. An accurate prediction of the ice crystal number concentration in clouds is important to determine the radiation budget, the lifetime, and the precipitation formation of clouds. Secondary ice production is thought to be responsible for the observed discrepancies between the ice crystal number concentration and the ice nucleating particle concentration in clouds. The Hallett-Mossop process is active between −3 °C and −8 °C and has been implemented into several models while all other secondary ice processes are poorly constrained and lack a well-founded quantification. During two hours of measurements taken on a mountain slope just above the melting layer at temperatures warmer than −3 °C, a continuously high concentration of small plates identified as secondary ice was observed. The presence of drizzle drops suggests droplet fragmentation upon freezing as the responsible secondary ice mechanism. The constant supply of drizzle drops can be explained by a recirculation theory, suggesting that melted snowflakes, which sedimented through the melting layer, were reintroduced into the cloud as drizzle drops by orographically forced updrafts. Here we introduce a parametrization of droplet fragmentation at high temperatures when primary ice nucleation is basically absent and the first ice is initiated by collision of drizzle drops with aged ice crystals sedimenting from higher altitudes. Based on previous measurements, we estimate that a droplet of 200 µm in diameter produces 18 secondary ice crystals when it fragments upon freezing. The application of the parametrization to our measurements shows high uncertainties, but the estimated number of splinters produced per fragmenting droplet (18–43) lies within the range of uncertainty if we assume that all droplets larger than 40 µm fragment when they freeze.

Equations of the kinetics of droplet fragmentation in a high-speed gas flow

2011 ◽  
Vol 84 (2) ◽  
pp. 262-269 ◽  
Author(s):  
A. G. Girin
Keyword(s):  
High Speed ◽  
Gas Flow ◽  
Kinetics Of ◽  
Droplet Fragmentation

The role of droplet fragmentation in high-pressure evaporating diesel sprays

2009 ◽  
Vol 48 (3) ◽  
pp. 554-572 ◽  
Author(s):  
S. Tonini ◽  
M. Gavaises ◽  
A. Theodorakakos
Keyword(s):  
High Pressure ◽  
Diesel Sprays ◽  
Droplet Fragmentation
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