Results 71 to 80 of about 363,183 (210)

Large and very large scale motions in roughbed open-channel flow

open access: yesE3S Web of Conferences, 2018
Long duration PIV measurements in rough-bed (glass beads) open-channel flow (OCF) reveal that the pre-multiplied spectra of the streamwise velocity has a bimodal distribution due to the presence of large and very large scale motions (LSMs and VLSMs ...
Cameron Stuart   +3 more
doaj   +1 more source

Experimental and Theoretical Investigation of Moisture Dynamics in Intermittent Drying of Rough Rice

open access: yesJournal of Chemical and Petroleum Engineering, 2012
Intermittent drying is a satisfactory technique for drying of heat sensitive grains especially rough rice. This method consists of two separate stages applied intermittently: drying and tempering.
Morteza Golmohammadi   +2 more
doaj   +1 more source

Effects of Regularly Arrayed Roughness on Flow Resistance and Turbulent Flow Structure in an Open Channel [PDF]

open access: yes, 2014
Effects of regularly arrayed cylindrical and sphere roughness on flow resistance and turbulent characteristics in an open channel have been investigated over a completely rough-bed with uniform stainless steel rods and glass beads.
Sukarno, S. (Sukarno)
core  

Turbulent flow characteristics over rough permeable and impermeable gravel-bed stream- an experimental study

open access: yesJournal of Hydrology and Hydromechanics
The study aims to presents flow heterogeneity over rough permeable and impermeable gravel-bed stream. The rough permeable stream is prepared by laying multiple layers of gravel, whereas its impermeable counterpart is presented by a resin-casted gravel ...
Das Ratul, Ghosh Mithun
doaj   +1 more source

Measurement of turbulent flow in a narrow open channel

open access: yesJournal of Hydrology and Hydromechanics, 2016
The paper presents the experimental results of turbulent flow over hydraulically smooth and rough beds. Experiments were conducted in a rectangular flume under the aspect ratio b/h = 2 (b = width of the channel 0.5 m, and h = flow depth 0.25 m) for both ...
Sarkar Sankar
doaj   +1 more source

The Effect of Air on Granular Size Separation in a Vibrated Granular Bed

open access: yes, 2005
Using high-speed video and magnetic resonance imaging (MRI) we study the motion of a large sphere in a vertically vibrated bed of smaller grains. As previously reported we find a non-monotonic density dependence of the rise and sink time of the large ...
Greg S. Karczmar   +13 more
core   +1 more source

Effect of aspect ratio on higher order moments of velocity fluctuations in hydraulically rough open channel flow

open access: yesE3S Web of Conferences, 2018
The effect of aspect ratio on the higher order statistics of velocity fluctuations in a hydraulically rough turbulent open channel flow is investigated.
Mahananda Minakshee   +1 more
doaj   +1 more source

Turbulent Characteristics of Shallow Flow Over Rough Surface with Regularly Arrayed Spheres [PDF]

open access: yes, 2013
Turbulent nature of near-bed flow field was investigated in an open channel over a rough-bed artificially arrayed with glass beads, where ratios of the glass diameter to flow depth are 0.3, 0.5 and 0.8.
Sukarno, S. (Sukarno)
core  

Direct numerical simulation of open-channel flow over a fully-rough wall at moderate relative submergence [PDF]

open access: yes, 2017
Direct numerical simulation of open-channel flow over a bed of spheres arranged in a regular pattern has been carried out at bulk Reynolds number and roughness Reynolds number (based on sphere diameter) of approximately 6900 and 120, respectively, for ...
Flack   +7 more
core   +2 more sources

Manual polishing of 3D printed metals produced by laser powder bed fusion reduces biofilm formation.

open access: yesPLoS ONE, 2019
Certain 3D printed metals and surface finishes may be better suited for canine patient specific orthopedic implants on the basis of minimizing potential bacterial biofilm growth.
Marissa McGaffey   +5 more
doaj   +1 more source

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