An experimental study in the structure of convective flows of magma melts in a complete system: Mantle chamber-intermediate chamber-volcano

2008 ◽  
Vol 2 (5) ◽  
pp. 347-355 ◽  
Author(s):  
L. Sh. Bazarov ◽  
V. I. Gordeeva ◽  
E. I. Petrushin
Keyword(s):  
Experimental Study ◽  
Complete System ◽  
Convective Flows ◽  
Intermediate Chamber

scholarly journals Experimental study of the stratification of polydisperse emulsions in a cell with heated walls

2021 ◽  
Vol 2057 (1) ◽  
pp. 012041
Author(s):  
V I Valiullina ◽  
A I Mullayanov ◽  
A A Musin ◽  
L A Kovaleva
Keyword(s):  
Experimental Study ◽  
Deposition Rate ◽  
Thermal Convection ◽  
Dispersion Medium ◽  
Experimental Studies ◽  
Oil Emulsion ◽  
Convective Flows ◽  
A Cell ◽  
Increasing Temperature ◽  
Water In Oil Emulsion

Abstract Experimental studies of the gravitational deposition of a polydisperse water-in-oil emulsion under heat influence are carried out. When the rate of thermal convection exceeds the rate of precipitation, partial delamination of the emulsion is found to occur. The viscosity of the dispersion medium decreases with increasing temperature, which contributes to an increase in the deposition rate of water droplets in the emulsion. In the presence of a temperature difference, convective flows occur in the liquid, while the drops of the emulsion coagulate and form larger agglomerates that settle faster to the bottom of the cell.

scholarly journals Experimental study of the behaviour of the crosstalk of shielded or untwisted-pair cables in high frequency

2019 ◽  
Vol 16 (3) ◽  
pp. 311-324
Author(s):  
Benazza Baghdadi ◽  
Bendaoud Abdelber ◽  
Reineix Alain ◽  
Dafif Omar ◽  
Slimani Helima
Keyword(s):  
Experimental Study ◽  
Case Studies ◽  
High Frequency ◽  
Complete System ◽  
Electronic Systems ◽  
Natural Phenomena ◽  
Industrial Activity ◽  
Common Mode ◽  
Network Analyser ◽  
Electromagnetic Disturbances

Electromagnetic disturbances from natural phenomena such as lightning, or those generated from industrial activity, can cause harmful interference in onboard electronic systems. The disturbances are generally transformed into radiated and conducted disturbances, using wired connections to spread their effects in electrical and electronic systems. In order to identify the paths of propagation and coupling of these HF currents into a complete system and propose solutions to reduce EMC interference, it is necessary and important to carry out experimental case studies on the coupling between shielded as well as unarmoured cables, in order to identify the importance of differential and common-mode currents. Measurements were made using a 4-way vector network analyser giving the results of the crosstalk between victim and culprit cables as well as for module and phase.

Experimental study of solid-propellant ignition transient and flame spreading under convective flows

2000 ◽  
Vol 36 (1) ◽  
pp. 108-118 ◽  
Author(s):  
L. Galfetti ◽  
G. Colombo ◽  
A. Menalli ◽  
G. Benzoni ◽  
C. Galli
Keyword(s):  
Experimental Study ◽  
Solid Propellant ◽  
Flame Spreading ◽  
Convective Flows

scholarly journals An experimental study of multiple zonal jet formation in rotating, thermally driven convective flows on a topographic beta-plane

2015 ◽  
Vol 27 (8) ◽  
pp. 085111 ◽  
Author(s):  
P. L. Read ◽  
T. N. L. Jacoby ◽  
P. H. T. Rogberg ◽  
R. D. Wordsworth ◽  
Y. H. Yamazaki ◽  
...  
Keyword(s):  
Experimental Study ◽  
Jet Formation ◽  
Convective Flows ◽  
Beta Plane ◽  
Thermally Driven

scholarly journals Experimental study of convective flows in the freezer

2014 ◽  
Vol 19 ◽  
pp. 01003 ◽  
Author(s):  
Alexander Krasnoshlykov ◽  
Vyacheslav I. Maksimov
Keyword(s):  
Experimental Study ◽  
Convective Flows

Thermal Convection and Dispersion in Folded Gaps Embedded in Impervious Rocks

Volume 1 ◽  
2004 ◽  
Author(s):  
F. Sa´nchez ◽  
A. Medina ◽  
J. L. Montan˜es
Keyword(s):  
Experimental Study ◽  
Aspect Ratio ◽  
Thermal Convection ◽  
Taylor Dispersion ◽  
Vertical Temperature Gradient ◽  
Small Aspect Ratio ◽  
Dispersive Transport ◽  
Vertical Temperature ◽  
Convective Flows ◽  
Saturated Porous Layer

It is presented a numerical and experimental study related to thermal convection and Taylor dispersion in a symmetrical folded gap of small aspect ratio. The gap is surrounded by an impervious rock which is affected by a constant vertical temperature gradient. Two cases were analyzed, the fluid-filled gap and the fluid-saturated porous layer. Their corresponding convective flows were calculated for small Rayleigh number regimes. Taylor dispersion of a passive contaminant, in both cases, was studied. It was found that dispersion is strongly limited by the convective flows. Indeed, the Peclet number and the gap aspect ratio seem to be tight related to an eventually limited dispersive transport rate.

Replication of Wet Objects and Cells

1974 ◽  
Vol 32 ◽  
pp. 102-103
Author(s):  
S. Basu ◽  
D. F. Parsons
Keyword(s):  
Water Vapor Pressure ◽  
High Vacuum ◽  
Polystyrene Latex ◽  
Vacuum System ◽  
Saturated Water Vapor ◽  
Replication Method ◽  
New Methods ◽  
Saturated Water ◽  
Water Vapors ◽  
Intermediate Chamber

We are approaching the invasiveness of cancer cells from the studies of their wet surface morphology which should distinguish them from their normal counterparts. In this report attempts have been made to provide physical basis and background work to a wet replication method with a differentially pumped hydration chamber (Fig. 1) (1,2), to apply this knowledge for obtaining replica of some specimens of known features (e.g. polystyrene latex) and finally to realize more specific problems and to improvize new methods and instrumentation for their rectification. In principle, the evaporant molecules penetrate through a pair of apertures (250, 350μ), through water vapors and is, then, deposited on the specimen. An intermediate chamber between the apertures is pumped independently of the high vacuum system. The size of the apertures is sufficiently small so that full saturated water vapor pressure is maintained near the specimen.

Experimental study on the restoration from a tilt-azimuth series for improvement in resolution

1995 ◽  
Vol 53 ◽  
pp. 636-637
Author(s):  
Norio Baba ◽  
Norihiko Ichise ◽  
Syunya Watanabe
Keyword(s):  
Experimental Study ◽  
Spherical Aberration ◽  
Incident Beam ◽  
Optical Parameters ◽  
Beam Tilting ◽  
Illumination Method ◽  
Restoration Method ◽  
Illumination Mode

The tilted beam illumination method is used to improve the resolution comparing with the axial illumination mode. Using this advantage, a restoration method of several tilted beam images covering the full azimuthal range was proposed by Saxton, and experimentally examined. To make this technique more reliable it seems that some practical problems still remain. In this report the restoration was attempted and the problems were considered. In our study, four problems were pointed out for the experiment of the restoration. (1) Accurate beam tilt adjustment to fit the incident beam to the coma-free axis for the symmetrical beam tilting over the full azimuthal range. (2) Accurate measurements of the optical parameters which are necessary to design the restoration filter. Even if the spherical aberration coefficient Cs is known with accuracy and the axial astigmatism is sufficiently compensated, at least the defocus value must be measured. (3) Accurate alignment of the tilt-azimuth series images.

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