Search results for "Secondary flow"

showing 3 items of 13 documents

A suggested role for secondary flow in the stimulation of the cochlear hair cell

1985

The mammalian Corti organ and the reptilian basilar papilla are structures with a curved surface, which vibrate in a fluid medium. This paper is concerned with the role played by the geometric shape of these organs in cochlear hydrodynamics. In association with vibrating structures such as these organs, it can be expected that a stationary current will be initiated due to a nonlinear phenomenon in the boundary layer known as secondary flow. This phenomenon may explain the source of the mechanical nonlinearity in the cochlea.

Vestibular systemPhysicsCommunicationGeneral Computer ScienceSense organbusiness.industryStimulationGeometric shapeSecondary flowmedicine.anatomical_structureotorhinolaryngologic diseasesmedicineBiophysicsInner earsense organsCurrent (fluid)businessCochleaBiotechnologyBiological Cybernetics
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Dip Phenomenon in High-Curved Turbulent Flows and Application of Entropy Theory

2018

The estimation of velocity profile in turbulent open channels is a difficult task due to the significant effects of the secondary flow. The present paper investigates the mechanism of the velocity-dip phenomenon, whereby the location of the maximum velocity appears to be below the free surface. Previous studies conducted in straight channels relate the mechanism of the velocity-dip phenomenon to secondary flow induced by anisotropy of turbulence. This work focuses on high-curved channels where the secondary motion, which is also induced by the channel’s curvature, evolves along the bend. The width-to-depth ratio, B/h, is one of the most important parameters that are affecting the secondary …

Work (thermodynamics)lcsh:Hydraulic engineeringAspect ratioriver0208 environmental biotechnologyGeography Planning and Development02 engineering and technologyAquatic ScienceCurvatureBiochemistrySettore ICAR/01 - Idraulicalcsh:Water supply for domestic and industrial purposeslcsh:TC1-978AnisotropyWater Science and TechnologyPhysicslcsh:TD201-500Turbulenceturbulencesecondary motionMechanicspredictionrivers; meanders; turbulence; secondary motion; predictionSecondary flowrivers020801 environmental engineeringFlow velocityFree surfacemeandersmeanderWater; Volume 10; Issue 3; Pages: 306
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Entropic model application to identify cross-sectional flow effect on velocity distribution in a large amplitude meandering channel

2020

Abstract Literature shows the application of the entropy concept in open channels flow. No existing research has been addressed to the application of the entropy concept for evaluating the effect of secondary flow which especially develops in curved channels. The purpose of this paper is to explore the possibility to evaluate the effect of the secondary flow on the stream-wise velocity distribution starting only from the knowledge of the surface velocity and the entropic concept application. The analysis is conducted with the aid of data collected in a large-amplitude meandering laboratory flume for two different values of the width-to-depth ratio. Results show that the location of the maxi…

riverentropic modelMechanicsSecondary flowSettore ICAR/01 - IdraulicaFlumeAmplitudeFlow velocityModel applicationShear stressFlow effectEntropy (energy dispersal)Meandering channelGeologyWater Science and Technology
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