scholarly journals An analysis of the characteristics of acid reaction on the minerals with the aid of a rotating disk system.

1992 ◽  
Vol 57 (6) ◽  
pp. 564-571
Author(s):  
Masashi MIYAZAWA ◽  
Yoshihiro MASUDA ◽  
Shoichi TANAKA ◽  
Nozomu KOGA ◽  
Shogo SUZUKI
Keyword(s):  
Rotating Disk ◽  
Disk System ◽  
Acid Reaction

Transfer of Heat in Rotating Systems

1976 ◽  
Author(s):  
A. D. Gosman ◽  
M. L. Koosinlin ◽  
F. C. Lockwood ◽  
D. B. Spalding
Keyword(s):  
Heat Transfer ◽  
Boundary Layer ◽  
Fluid Flow ◽  
Rotating Disk ◽  
Experimental Measurements ◽  
Steady Flows ◽  
Disk System ◽  
Rotating Systems ◽  
Flow And Heat Transfer ◽  
Layer Flow

A calculation procedure has been developed for predicting fluid-flow and heat-transfer phenomena in axisymmetrical, rotating, turbulent, steady flows, with special reference to those mainly confined within cavities. The procedure has been used for predicting boundary-layer flow between a rotating disk and a stationary one, and flow and heat transfer in a shrouded-disk system. Agreement with experimental measurements is satisfactory.

Dynamic field testing of coating chemistry candidates by a rotating disk system

Biofouling ◽  
2018 ◽  
Vol 34 (4) ◽  
pp. 398-409 ◽  
Author(s):  
Kim A. Nolte ◽  
Julian Koc ◽  
J.M. Barros ◽  
Kelli Hunsucker ◽  
Michael P. Schultz ◽  
...  
Keyword(s):  
Rotating Disk ◽  
Field Testing ◽  
Disk System ◽  
Dynamic Field

Recovery of trypsin inhibitor by soy milk ultrafiltration using a rotating disk system

Desalination ◽  
2006 ◽  
Vol 191 (1-3) ◽  
pp. 438-445 ◽  
Author(s):  
O. Akoum ◽  
D. Richfield ◽  
M.Y. Jaffrin ◽  
L.H. Ding ◽  
P. Swart
Keyword(s):  
Trypsin Inhibitor ◽  
Rotating Disk ◽  
Soy Milk ◽  
Disk System

Effect of Radial Location of Nozzles on Heat Transfer in Preswirl Cooling Systems

2010 ◽  
Vol 133 (2) ◽  
Author(s):  
V. U. Kakade ◽  
G. D. Lock ◽  
M. Wilson ◽  
J. M. Owen ◽  
J. E. Mayhew
Keyword(s):  
Heat Transfer ◽  
Convective Heat Transfer Coefficient ◽  
Rotating Disk ◽  
High Heat ◽  
Thermochromic Liquid Crystal ◽  
Disk System ◽  
Dimensional Solution ◽  
Flow Rates ◽  
Measure Surface Temperature ◽  
High Heat Transfer

This paper investigates heat transfer in a rotating disk system using preswirled cooling air from nozzles at high and low radius. The experiments were conducted over a range of rotational speeds, flow rates, and preswirl ratios. Narrow-band thermochromic liquid crystal (TLC) was specifically calibrated for application to experiments on a disk, rotating at ∼5000 rpm and subsequently used to measure surface temperature in a transient experiment. The TLC was viewed through the transparent polycarbonate disk using a digital video camera and strobe light synchronized to the disk frequency. The convective heat transfer coefficient h was subsequently calculated from the one-dimensional solution of Fourier's conduction equation for a semi-infinite wall. The analysis was accounted for the exponential rise in the air temperature driving the heat transfer, and for the experimental uncertainties in the measured values of h. The experimental data was supported by “flow visualization,” determined from CFD. Two heat transfer regimes were revealed for the low-radius preswirl system: a viscous regime at relatively low coolant flow rates, and an inertial regime at higher flow rates. Both regimes featured regions of high heat transfer where thin, boundary layers replaced air exiting through receiver holes at high radius on the rotating disk. The heat transfer in the high-radius preswirl system was shown to be dominated by impingement under the flow conditions tested.

Plasmon-Enhanced Performance of an Array of Core-Shell Silver Nanoparticles Photodeposited onto a Titanium Dioxide Layer

2016 ◽  
Vol 860 ◽  
pp. 35-38
Author(s):  
Chou Chau Yuan-Fong
Keyword(s):  
Silver Nanoparticles ◽  
Titanium Dioxide ◽  
Incident Angle ◽  
Three Dimensional ◽  
Rotating Disk ◽  
Core Shell ◽  
Disk System ◽  
Photocatalytic Reactor ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element

A plasmonic photocatalytic reactor which composed of a periodic array of core-shell silver nanoparticles (CSSNPs) photodeposited onto a Titanium Dioxide (TiO2) thin film in a multilayer rotating-disk system was numerically investigated by using three-dimensional finite element method. Results show that the proposed structure can exhibit much higher photocalytic activity in a broad range of incident angle of light that are not observed for the same counterpart without the CSSNPs on the SiO2 surface. The enhanced electric field distribution and intensity could be expanded as the inner diameter of CSSNPs and incident angle of light increased.

Shear stress increases hydraulic conductivity of cultured endothelial monolayers

1995 ◽  
Vol 268 (2) ◽  
pp. H535-H543 ◽  
Author(s):  
H. W. Sill ◽  
Y. S. Chang ◽  
J. R. Artman ◽  
J. A. Frangos ◽  
T. M. Hollis ◽  
...  
Keyword(s):  
Shear Stress ◽  
Hydraulic Conductivity ◽  
Physical Mechanism ◽  
Phosphodiesterase Inhibitor ◽  
Rotating Disk ◽  
Bovine Aortic Endothelial Cell ◽  
Shear Stresses ◽  
Disk System ◽  
Cell Monolayers ◽  
Endothelial Monolayers

To examine the effect of shear stress on hydraulic conductivity (Lp) of bovine aortic endothelial cell monolayers grown on polycarbonate filters, we developed a rotating disk system, which imposed a defined shear stress while Lp was measured. A 10-cmH2O pressure differential was applied to monolayers, and baseline Lp was established between 1.65 +/- 0.85 and 4.94 +/- 1.05 x 10(-7) cm.s-1.cmH2O-1. One-hour exposure to 10 dyn/cm2 shear stress caused a significant (P < 0.05) increase in Lp by 2.16-fold (+/- 0.42), and Lp remained elevated when shear stress was removed. Three-hour exposure to shear stresses between 0.1 and 20.0 dyn/cm2 revealed a threshold for shear-induced increase in Lp of 0.5 dyn/cm2. At 20 dyn/cm2, Lp initially decreased by 30% (+/- 13.4%, P < 0.05) and then increased to a level 3.76-fold (+/- 0.83, P < 0.05) greater than baseline Lp at 3 h. The shear-induced increase in Lp was reversed with dibutyryl adenosine 3',5'-cyclic monophosphate (DBcAMP, 1 mM) and could be significantly (P < 0.05) inhibited when monolayers were preincubated with 0.3 mM DBcAMP, a concentration that did not significantly affect baseline Lp. Furthermore, preincubation with a general phosphodiesterase inhibitor, 3-isobutyl-1-methylxanthine (1 mM), completely blocked the shear-induced increase in Lp. On the basis of these results, we conclude that shear stress alters endothelial Lp through a cellular mechanism involving signal transduction, not by a purely physical mechanism.

scholarly journals A Novel Rotating Disk System for Disintegration of Excess Sludge

2016 ◽  
Vol 2016 ◽  
pp. 1-6
Author(s):  
Ming yang Zhang ◽  
Yun Xiang ◽  
Jian wei Du
Keyword(s):  
Treatment Process ◽  
Rotating Disk ◽  
Excess Sludge ◽  
Industrial Waste Water ◽  
Disk System ◽  
Sludge Treatment ◽  
Conventional Activated Sludge ◽  
System A ◽  
Break Cell ◽  
A Cell

Conventional activated sludge treatment process has been widely employed to deal with a variety of municipal and industrial waste water, but the production of sludge by this method is considerable. It is urgent to find an appropriate method which can solve this problem. Shear force produced by rotating disk system (a cell lysis system) was employed to break cell wall of sludge microorganism in order to release intracellular materials which can be reused as nutrient materials for metabolism of other sludge microorganisms in this study. Special feature on surfaces of disks had been proved to be a novel improvement which can improve disintegration effect apparently. Ultrasonic system can further promote minimization of excess sludge after treatment by rotating disk system in shorter time.

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