Analysis of the Performance of a High-Speed Scott Turbon Mixer in Immiscible Liquid–Liquid Mixing through Endoscopy, Tomography, CFD, and Statistical Methods

2021 ◽  
Author(s):  
Argang Kazemzadeh ◽  
Ginette Turcotte ◽  
Farhad Ein-Mozaffari ◽  
Ali Lohi
Keyword(s):  
Statistical Methods ◽  
High Speed ◽  
Immiscible Liquid ◽  
Liquid Mixing

Analysis of immiscible liquid-liquid mixing in stirred tanks by Electrical Resistance Tomography

2020 ◽  
Vol 227 ◽  
pp. 115898 ◽  
Author(s):  
Francesco Maluta ◽  
Giuseppina Montante ◽  
Alessandro Paglianti
Keyword(s):  
Electrical Resistance ◽  
Immiscible Liquid ◽  
Stirred Tanks ◽  
Electrical Resistance Tomography ◽  
Liquid Mixing

Influence of Jet Velocity on Jet Breakup in Immiscible Liquid-Liquid Systems

2009 ◽  
Vol 4 (3) ◽  
Author(s):  
Chi M Phan ◽  
Geoffrey M Evans
Keyword(s):  
Droplet Size ◽  
High Speed ◽  
Immiscible Liquid ◽  
Linear Instability ◽  
Liquid Jets ◽  
Instability Analysis ◽  
Jet Breakup ◽  
Liquid Systems ◽  
Jet Velocity ◽  
Simplified Solution

The breakup of a laminar liquid jet is the underling phenomena used to generate emulsions in micro-scale devices. Jet breakup is induced by the most unstable disturbance growing on the jet surface, and linear instability analysis can be utilized to predict the resultant droplet size. Previously, instability analysis has been applied to stationary jets at intermediate Re only. This study investigates the influence of the jet velocity on the jet breakup at low Re number. The breakups of moving liquid jets were monitored using a high speed camera. The jet diameter, jet breakup length and resultant droplet sizes were strongly influenced by jet velocity. In addition to a simplified solution, a linear analysis for a moving jet was developed to determine the resultant droplet size. It was found that the full analysis is required to correctly predict the droplet size at low Re number.

scholarly journals Probing the nanoscale: the first contact of an impacting drop

2015 ◽  
Vol 785 ◽  
Author(s):  
E. Q. Li ◽  
I. U. Vakarelski ◽  
S. T. Thoroddsen
Keyword(s):  
Solid Surface ◽  
High Speed ◽  
Water Drop ◽  
Triple Line ◽  
Immiscible Liquid ◽  
Initial Contact ◽  
High Speed Imaging ◽  
Left Behind ◽  
Drop Impacts ◽  
First Contact

When a drop impacts onto a solid surface, the lubrication pressure in the air deforms its bottom into a dimple. This makes the initial contact with the substrate occur not at a point but along a ring, thereby entrapping a central disc of air. We use ultra-high-speed imaging, with 200 ns time resolution, to observe the structure of this first contact between the liquid and a smooth solid surface. For a water drop impacting onto regular glass we observe a ring of microbubbles, due to multiple initial contacts just before the formation of the fully wetted outer section. These contacts are spaced by a few microns and quickly grow in size until they meet, thereby leaving behind a ring of microbubbles marking the original air-disc diameter. On the other hand, no microbubbles are left behind when the drop impacts onto molecularly smooth mica sheets. We thereby conclude that the localized contacts are due to nanometric roughness of the glass surface, and the presence of the microbubbles can therefore distinguish between glass with 10 nm roughness and perfectly smooth glass. We contrast this entrapment topology with the initial contact of a drop impacting onto a film of extremely viscous immiscible liquid, where the initial contact appears to be continuous along the ring. Here, an azimuthal instability occurs during the rapid contraction at the triple line, also leaving behind microbubbles. For low impact velocities the nature of the initial contact changes to one initiated by ruptures of a thin lubricating air film.

Immiscible Liquid–Liquid Mixing

Food Mixing ◽  
2009 ◽  
pp. 175-198 ◽  
Author(s):  
Fotis Spyropoulos ◽  
P. W. Cox ◽  
Ian T. Norton
Keyword(s):  
Immiscible Liquid ◽  
Liquid Mixing

scholarly journals Experimental study on liquid spray and small droplet formation in ethanol-oil system in a DC electric field

2019 ◽  
Vol 1 (2) ◽  
pp. 8-14
Author(s):  
Dongbao Wang ◽  
Junfeng Wang ◽  
Piyaphong Yongphet
Keyword(s):  
Experimental Study ◽  
Electric Field ◽  
High Speed ◽  
Droplet Size Distribution ◽  
Interfacial Area ◽  
Droplet Formation ◽  
Immiscible Liquid ◽  
Low Flow ◽  
Flow Rates ◽  
Liquid Spray

A detailed experimental study on the evolution process of charged liquid deformation and breakup in another immiscible liquid from a capillary channel was conducted at micro-scale. By means of high-speed microscopy technique, various liquid spray modes and droplet formation processes were illustrated in detail at different flow rates and voltages. The effects of Reynolds (Re) and electric Bond (BoE) number on droplet size distribution were analyzed. It was found that droplet sizes rose with increasing Re while declined with increasing BoE. The experimental results show that electric field could promote interfacial area through decreasing interfacial tension to augment mass transfer between immiscible liquids at low flow rates. Besides, liquid spray experienced drip, deformation, breakup and jet modes with the increase of flow rate and electric potential. A critical Re of 170 was obtained beyond which electric field had little effect on liquid dynamic behaviors.

High-speed observation of the effects of ultrasound on liquid mixing and agglomerated crystal breakage processes

2007 ◽  
Vol 171 (3) ◽  
pp. 146-153 ◽  
Author(s):  
Z. Guo ◽  
A.G. Jones ◽  
N. Li ◽  
S. Germana
Keyword(s):  
High Speed ◽  
Liquid Mixing

Statistics and parallaxes

1978 ◽  
Vol 48 ◽  
pp. 7-29
Author(s):  
T. E. Lutz
Keyword(s):  
Experimental Design ◽  
Statistical Methods ◽  
Review Paper ◽  
Systematic Errors ◽  
Past Experience ◽  
Random Errors ◽  
Trigonometric Parallaxes ◽  
Systematic And Random Errors

This review paper deals with the use of statistical methods to evaluate systematic and random errors associated with trigonometric parallaxes. First, systematic errors which arise when using trigonometric parallaxes to calibrate luminosity systems are discussed. Next, determination of the external errors of parallax measurement are reviewed. Observatory corrections are discussed. Schilt’s point, that as the causes of these systematic differences between observatories are not known the computed corrections can not be applied appropriately, is emphasized. However, modern parallax work is sufficiently accurate that it is necessary to determine observatory corrections if full use is to be made of the potential precision of the data. To this end, it is suggested that a prior experimental design is required. Past experience has shown that accidental overlap of observing programs will not suffice to determine observatory corrections which are meaningful.

Microfabrication research at the National Submicron Facility

1983 ◽  
Vol 41 ◽  
pp. 86-89
Author(s):  
E.D. Wolf
Keyword(s):  
Integrated Circuits ◽  
Particle Physics ◽  
High Speed ◽  
New Technology ◽  
High Energy ◽  
High Energy Particle ◽  
New Science ◽  
Wide Range ◽  
Intermediate Domain ◽  
Circuit Function

Most microelectronics devices and circuits operate faster, consume less power, execute more functions and cost less per circuit function when the feature-sizes internal to the devices and circuits are made smaller. This is part of the stimulus for the Very High-Speed Integrated Circuits (VHSIC) program. There is also a need for smaller, more sensitive sensors in a wide range of disciplines that includes electrochemistry, neurophysiology and ultra-high pressure solid state research. There is often fundamental new science (and sometimes new technology) to be revealed (and used) when a basic parameter such as size is extended to new dimensions, as is evident at the two extremes of smallness and largeness, high energy particle physics and cosmology, respectively. However, there is also a very important intermediate domain of size that spans from the diameter of a small cluster of atoms up to near one micrometer which may also have just as profound effects on society as “big” physics.

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