Results 41 to 50 of about 319,321 (204)

Spray characteristics of a multi-hole injector for direct-injection gasoline engines [PDF]

open access: yes, 2006
The sprays from a high-pressure multi-hole nozzle injected into a constant-volume chamber have been visualized and quantified in terms of droplet velocity and diameter with a two-component phase Doppler anemometry (PDA) system at injection pressures up ...
Arcoumanis, C.   +3 more
core   +1 more source

Numerical investigation of droplet formation in T-junction microfluidic system with a semi-NACA-shaped squeezer

open access: yesCommunications in Physics
We present a numerical investigation of droplet formation in a T-junction microfluidic system with a semi-NACA-shaped squeezer. A two-dimensional numerical model is employed to simulate the droplet formation process using the Volume of Fluid method. The
Ich Long Ngo, Van Nam Dao, Thi-Xuan Chu
doaj   +1 more source

Pinned Droplet Size on a Superhydrophobic Surface in Shear Flow

open access: yesAerospace, 2020
The recent development of a superhydrophobic surface enhances the droplet shedding under a shear flow. The present study gives insights into the effects of shear flow on a pinned droplet over a superhydrophobic surface.
Mitsugu Hasegawa   +3 more
doaj   +1 more source

Minimising oil droplet size using ultrasonic emulsification [PDF]

open access: yesUltrasonics Sonochemistry, 2009
The efficient production of nanoemulsions, with oil droplet sizes of less than 100nm would facilitate the inclusion of oil soluble bio-active agents into a range of water based foods. Small droplet sizes lead to transparent emulsions so that product appearance is not altered by the addition of an oil phase.
Leong, TSH   +3 more
openaire   +3 more sources

Interferometric laser imaging for respiratory droplets sizing

open access: yesExperiments in Fluids, 2023
AbstractDue to its importance in airborne disease transmission, especially because of the COVID-19 pandemic, much attention has recently been devoted by the scientific community to the analysis of dispersion of particle-laden air clouds ejected by humans during different respiratory activities.
Grandoni, Livia   +6 more
openaire   +2 more sources

Enable a Facile Size Re-distribution of MBE-Grown Ga-Droplets via In Situ Pulsed Laser Shooting

open access: yesNanoscale Research Letters, 2021
A MBE-prepared Gallium (Ga)-droplet surface on GaAs (001) substrate is in situ irradiated by a single shot of UV pulsed laser. It demonstrates that laser shooting can facilely re-adjust the size of Ga-droplet and a special Ga-droplet of extremely broad ...
Biao Geng   +8 more
doaj   +1 more source

Atomization Characteristics of a Hollow Cone Nozzle for Air-Assisted Variable-Rate Spraying

open access: yesAgriculture, 2023
During variable-rate spraying in orchards, the atomization characteristics and distribution of droplets in and out of the target area can be affected by the sprayer pressure. In this study, a variable-rate spraying control system test bench was designed,
Feixiang Yuan   +7 more
doaj   +1 more source

Copepod manipulation of oil droplet size distribution [PDF]

open access: yesScientific Reports, 2019
AbstractOil spills are one of the most dangerous sources of pollution in aquatic ecosystems. Owing to their pivotal position in the food web, pelagic copepods can provide crucial intermediary transferring oil between trophic levels. In this study we show that the calanoidParacartia granican actively modify the size-spectrum of oil droplets.
Marco Uttieri   +6 more
openaire   +4 more sources

Hierarchical microcavity topography for enhancement of water vapor condensation heat transfer by regulating droplet dynamics and droplet size distribution

open access: yesCase Studies in Thermal Engineering, 2021
Manipulating droplet dynamics is of great importance in condensation heat transfer enhancement. Cavity topography was believed to be able to regulate droplet merging and self-removal via Laplace force imbalance by the cavity wall and the effect of ...
Tian-Yu Zhang   +5 more
doaj   +1 more source

Droplet Ripening in Concentration Gradients [PDF]

open access: yes, 2017
Living cells use phase separation and concentration gradients to organize chemical compartments in space. Here, we present a theoretical study of droplet dynamics in gradient systems.
Jülicher, Frank   +2 more
core   +2 more sources

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