Flow velocity ≈ Flow velocity
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Hidden fluid mechanics: Learning velocity and pressure fields from flow visualizations Open
Machine-learning fluid flow Quantifying fluid flow is relevant to disciplines ranging from geophysics to medicine. Flow can be experimentally visualized using, for example, smoke or contrast agents, but extracting velocity and pressure fie…
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Sediment deposition within and around a finite patch of model vegetation over a range of channel velocity Open
The interaction between flow and vegetation creates feedbacks to deposition that vary with channel velocity. This experimental study describes how channel velocity and stem‐generated turbulence influence the deposition within and around an…
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Hydrothermal analysis of MHD squeezing mixture fluid suspended by hybrid nanoparticles between two parallel plates Open
In this study, flow and heat transfer of Magnetohydrodynamic squeezing nanofluid flow between two infinity parallel plates have been investigated. The fluid is an equal mixture of Ethylene-glycol and water. This paper discusses the hybrid …
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Flexible Doppler ultrasound device for the monitoring of blood flow velocity Open
Flexible, angled transducer arrays offer direct blood flow measurements.
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Coarse‐grained debris flow dynamics on erodible beds Open
A systematic set of flume experiments is used to investigate the features of velocity profiles within the body of coarse‐grained debris flows and the dependence of the transport sediment concentration on the relevant parameters (runoff dis…
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Entropy Analysis on the Blood Flow through Anisotropically Tapered Arteries Filled with Magnetic Zinc-Oxide (ZnO) Nanoparticles Open
The present analysis deals with the entropy analysis of the blood flow through an anisotropically tapered arteries under the suspension of magnetic Zinc-oxide (ZnO) nanoparticles (NPs). The Jeffrey fluid model is contemplated as blood that…
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Computational assessment of hybrid nanofluid flow with the influence of hall current and chemical reaction over a slender stretching surface Open
The current study addresses the flow of steady electrically conducting hybrid nanofluid (HNF) across an impermeable slender stretchable sheet. The flow distribution takes into consideration the effects of variable magnetic fields, heat pro…
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Case study of MHD blood flow in a porous medium with CNTS and thermal analysis Open
This articles deals with unsteady MHD free convection flow of blood with carbon nanotubes. The flow is over an oscillating vertical plate embedded in a porous medium. Both single-wall carbon nanotubes (SWCNTs) and multiple-wall carbon nano…
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4D ultrafast ultrasound flow imaging:<i>in vivo</i>quantification of arterial volumetric flow rate in a single heartbeat Open
We present herein 4D ultrafast ultrasound flow imaging, a novel ultrasound-based volumetric imaging technique for the quantitative mapping of blood flow. Complete volumetric blood flow distribution imaging was achieved through 2D tilted pl…
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Acoustic Streaming and Its Applications Open
Broadly speaking, acoustic streaming is generated by a nonlinear acoustic wave with a finite amplitude propagating in a viscid fluid. The fluid volume elements of molecules, d V , are forced to oscillate at the same frequency as the incide…
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Slope–velocity equilibrium and evolution of surface roughness on a stony hillslope Open
Slope–velocity equilibrium is hypothesized as a state that evolves naturally over time due to the interaction between overland flow and surface morphology, wherein steeper areas develop a relative increase in physical and hydraulic roughne…
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Turbulence as the Main Driver of Resuspension in Oscillatory Flow Through Vegetation Open
A series of laboratory experiments was conducted using arrays of rigid cylinders in a sandy bed as a proxy for mangrove roots and benthos. Synchronous colocated measurements of velocity and suspended sediment concentration were recorded wi…
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Three-dimensional rotating flow of Jeffrey fluid for Cattaneo-Christov heat flux model Open
Present study addresses the three dimensional flow of Jeffrey fluid. Flow is induced by a porous stretching sheet. Cattaneo-Christov heat flux model is used to form energy equation. Appropriate transformations are employed to form system o…
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Effects of thermal radiation, Soret and Dufour on an unsteady heat and mass transfer flow of a chemically reacting fluid past a semi-infinite vertical plate with viscous dissipation Open
In this paper, the influence of some thermo-physical properties of fluid on heat and mass transfer flow past semi-infinite moving vertical plate is considered. The fluid considered is optically thin such that the thermal radiative heat los…
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Soret and heat generation effects on MHD Casson fluid flow past an oscillating vertical plate embedded through porous medium Open
Analytical solution of thermal diffusion and heat generation effects on MHD Casson fluid flow past an oscillating vertical plate embedded through porous medium in the presence of thermal radiation and chemical reaction is obtained. Ramped …
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Two-phase flow of dusty fluid with suspended hybrid nanoparticles over a stretching cylinder with modified Fourier heat flux Open
The current paper explores the influence of hybrid nanoparticles on the dusty liquid flow through a stretching cylinder by employing the modified Fourier heat flux law. Two phase model is implemented in the present research to characterise…
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Technical Note: Flow velocity and discharge measurement in rivers using terrestrial and unmanned-aerial-vehicle imagery Open
An automatic workflow to measure surface flow velocities in rivers is introduced, including a Python tool. The method is based on particle-tracking velocimetry (PTV) and comprises an automatic definition of the search area for particles to…
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UAVs for Hydrologic Scopes: Application of a Low-Cost UAV to Estimate Surface Water Velocity by Using Three Different Image-Based Methods Open
Stream velocity and flow are very important parameters that must be measured accurately to develop effective water resource management plans. There are various methods and tools to measure the velocity but, nowadays, image-based methods ar…
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Unsteady MHD Mixed Convection Slip Flow of Casson Fluid over Nonlinearly Stretching Sheet Embedded in a Porous Medium with Chemical Reaction, Thermal Radiation, Heat Generation/Absorption and Convective Boundary Conditions Open
Numerical results are presented for the effect of first order chemical reaction and thermal radiation on mixed convection flow of Casson fluid in the presence of magnetic field. The flow is generated due to unsteady nonlinearly stretching …
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Prediction of the low-velocity distribution from the pore structure in simple porous media Open
Fluid flow through porous media is determined by the underlying pore structure. An analytical relationship is proposed between the distribution of the width of small openings and the distribution of low fluid velocities in the medium, whic…
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Energy Dissipation and Hydraulics of Flow over Trapezoidal–Triangular Labyrinth Weirs Open
In this work experimental and numerical investigations were carried out to study the influence of the geometric parameters of trapezoidal–triangular labyrinth weirs (TTLW) on the discharge coefficient, energy dissipation, and downstream fl…
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Universality of the Turbulent Velocity Profile Open
For nearly a century, the universal logarithmic law of the mean velocity profile has been a mainstay of turbulent fluid mechanics and its teaching. Yet many experiments and numerical simulations are not fit exceedingly well by it, and the …
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Controlling struvite particles’ size using the up-flow velocity Open
Struvite crystallization has been widely investigated, but little attention has been focused on particle size, an important characteristic in fertilizers that affects the agronomic response. Although there is no standard, it is an interest…
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Sediment Transport of Fine Sand to Fine Gravel on Transverse Bed Slopes in Rotating Annular Flume Experiments Open
Large‐scale morphology, in particular meander bend depth, bar dimensions, and bifurcation dynamics, are greatly affected by the deflection of sediment transport on transverse bed slopes due to gravity and by secondary flows. Overestimating…
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The mechanisms behind perivascular fluid flow Open
Flow of cerebrospinal fluid (CSF) in perivascular spaces (PVS) is one of the key concepts involved in theories concerning clearance from the brain. Experimental studies have demonstrated both net and oscillatory movement of microspheres in…
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Investigation of the unsteady MHD fluid flow and heat transfer through the porous medium asymmetric wavy channel Open
This paper uses three analytical methods to find the novel results in the two-dimensional time-dependent MHD oscillatory flow and heat transfer in an asymmetric wavy porous channel. The corresponding constitutive equations become complex b…
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Mixing layer and coherent structures in compound channel flows: Effects of transverse flow, velocity ratio, and vertical confinement Open
Turbulent mixing layers associated with streamwise uniform and nonuniform flows in compound channels (main channel with adjacent floodplains) are experimentally investigated. The experiments start with uniform flow conditions. The streamwi…
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A Review of Critical Conditions for the Onset of Nonlinear Fluid Flow in Rock Fractures Open
Selecting appropriate governing equations for fluid flow in fractured rock masses is of special importance for estimating the permeability of rock fracture networks. When the flow velocity is small, the flow is in the linear regime and obe…
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Exploiting LSPIV to assess debris-flow velocities in the field Open
The assessment of flow velocity has a central role in quantitative analysis of debris flows, both for the characterization of the phenomenology of these processes and for the assessment of related hazards. Large-scale particle image veloci…
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Sand transport in multiphase flow mixtures in a horizontal pipeline: An experimental investigation Open
An inherent problem with both oil and natural gas production is the deposition of sand particles in pipeline, which could lead to problems such as excessive pressure drops, equipment failure, pipeline erosion, and production decline. The c…