Results 21 to 30 of about 9,521,895 (308)

Experimental study on the impact of bed forms on bed load transport in mountain streams

open access: yesShuili Shuiyun Gongcheng Xuebao, 2021
The flume experiments of bed load transport in the conditions of highslope shallow water flow were carried out in order to explore the impact of flow hydraulics and bed forms on bed load transport in gravel-cobble rivers in mountainous areas.
ZHANG Liguo   +3 more
doaj   +1 more source

The Detection of Water Flow in Rectangular Microchannels by Terahertz Time Domain Spectroscopy

open access: yesSensors, 2017
Flow characteristics of water were tested in a rectangular microchannel for Reynolds number (Re) between 0 and 446 by terahertz time domain spectroscopy (THz-TDS).
Yan Song   +6 more
doaj   +1 more source

Flow resistance in skimming flow: A critical review [PDF]

open access: yes, 2020
During very large rainfall events, dams and weirs must be equipped with adequate flood release facilities for a safe dissipation of the kinetic energy of the flow. With stepped spillway design, it is essential to predict accurately the flow resistance associated with the steps.
Chanson, H., Yusuda, Y., Ohtsu, I.
openaire   +2 more sources

Depths Inferred from Velocities Estimated by Remote Sensing: A Flow Resistance Equation-Based Approach to Mapping Multiple River Attributes at the Reach Scale

open access: yesRemote Sensing, 2021
Remote sensing of flow conditions in stream channels could facilitate hydrologic data collection, particularly in large, inaccessible rivers. Previous research has demonstrated the potential to estimate flow velocities in sediment-laden rivers via ...
Carl Legleiter, Paul Kinzel
doaj   +1 more source

Operating properties of air inlet filters in a sports car engine [PDF]

open access: yesBiuletyn Wojskowej Akademii Technicznej, 2017
There are presented design solutions and operation properties of air inlet filters of motor vehicles and sports cars. An analysis of the impact of the use of a sports car air filter in a passenger car was performed.
Tadeusz Dziubak, Yuriy Yendzheyovskyy
doaj   +1 more source

Evaluation of Flow Resistance Models Based on Field Experiments in a Partly Vegetated Reclamation Channel

open access: yes, 2020
This study presents a methodology for improving the efficiency of Baptist and Stone and Shen models in predicting the global water flow resistance of a reclamation channel partly vegetated by rigid and emergent riparian plants.
G. Lama   +5 more
semanticscholar   +1 more source

Properties analysis of filtration materials with nanofibers addition [PDF]

open access: yesBiuletyn Wojskowej Akademii Technicznej, 2019
Nanofiber properties, methods of their production, and areas of their application have been presented. Parameters describing filtration materials with nanofibers addition were presented, and analyzed.
Tadeusz Dziubak, Yurii Yendzheiovskyi
doaj   +1 more source

Flow resistance law in channels with fully submerged and rigid vegetation

open access: yesRiver, 2023
The estimate of flow resistance in vegetated channels is a challenging topic for programming riparian vegetation management, controlling channel conveyance and flooding propensity, for designing soil bioengineering practices.
Alessio Nicosia   +4 more
doaj   +1 more source

Flow resistance and hydraulic geometry in bedrock rivers with multiple roughness length scales

open access: yesEarth Surface Processes and Landforms, 2019
Many models of incision by bedrock rivers predict water depth and shear stress from discharge; conversely, palaeoflood discharge is sometimes reconstructed from flow depth markers in rock gorges. In both cases, assumptions are made about flow resistance.
R. Ferguson, R. Hardy, R. Hodge
semanticscholar   +1 more source

Controllable Active Micro Droplets Merging Device Using Horizontal Pneumatic Micro Valves

open access: yesMicromachines, 2013
We present an active droplet merging device, which can merge various sizes of micro droplets in different numbers by using pneumatically controlled horizontal PDMS microvalves.
Shuichi Shoji   +4 more
doaj   +1 more source

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