Results 11 to 20 of about 849,570 (300)
Refinement of turbulent flow velocity characteristics [PDF]
Инженерно-строительный журнал, 2013 The basic laws of Prandtl semi-empirical turbulence theory were analyzed in the article. It was shown, that the Prandtl – Nikuradse logarithmic distribution of velocities are not strictly universal. The change of the first and second turbulence constants
Y.V. Bryanskaya
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Field Investigation of Flow Resistance Due to Vegetation Patch (Case Study: Shapur, Fahlian and Dalaki Rivers) [PDF]
محیط زیست و مهندسی آب, 2023 Flow resistance in rivers with vegetation patches is one of the challenging parameters in river engineering. This study aimed to investigate the effect of vegetation patches on flow resistance in Shapur, Fahlian, and Dalaki rivers.
Masoud Naderi +2 more
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Investigation of a Negative Step Effect on Stilling Basin by Using CFD
Entropy, 2022 The negative-step stilling basin is an efficient and safe energy dissipator for high-head, large-unit discharge high-dam projects. However, studies of the effects of the negative step on the hydraulic performance of a high-dam stilling basin have not ...
Lei Jiang, Minjun Diao, Chuan’ai Wang
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Velocity profiles in strongly turbulent Taylor-Couette flow [PDF]
, 2013 We derive the velocity profiles in strongly turbulent Taylor-Couette flow for the general case of independently rotating cylinders. The theory is based on the Navier-Stokes equations in the appropriate (cylinder) geometry.
Chao Sun +3 more
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Geophysical Research Letters, 2023 Surging debris flows are among the most destructive natural hazards, and elucidating the interaction between coarse‐grained fronts and the trailing liquefied slurry is key to understanding these flows. Here, we describe the application of high‐resolution
Jordan Aaron +3 more
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Velocity profiles of Osipkov–Merritt models [PDF]
Monthly Notices of the Royal Astronomical Society, 1995 A simple algorithm is presented for the calculation of the projected line-of-sight velocity profiles (VPs) of non-rotating anisotropic spherical stellar dynamical models with a phase-space distribution function of the Osipkov-Merritt type. The velocity distribution in these models is isotropic inside the anisotropy radius r_a and becomes increasingly ...
Carollo, C. M. +2 more
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Flatness of tracer density profile produced by a point source in turbulence [PDF]
, 2003 The average concentration of tracers advected from a point source by a multivariate normal velocity field is shown to deviate from a Gaussian profile. The flatness (kurtosis) is calculated using an asymptotic series expansion valid for velocity fields ...
Gleeson, James P., Pullin, D. I.
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Method for estimating pulsatile wall shear stress from one‐dimensional velocity waveforms
Physiological Reports, 2023 Wall shear stress (WSS)—a key regulator of endothelial function—is commonly estimated in vivo using simplified mathematical models based on Poiseuille's flow, assuming a quasi‐steady parabolic velocity distribution, despite evidence that more rapidly ...
J. C. Muskat +3 more
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Stick and Slip Behaviour of Confined Oligomer Melts under Shear. A Molecular-Dynamics Study. [PDF]
, 1993 The flow behaviour of melts of short chains, confined in molecularly thin Couette flow geometries, is studied with molecular-dynamics simulations. The effect of wall attraction and confinement on the density and velocity profiles is analysed.
Bitsanis, I., +3 more
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Near-wall velocity profile measurement for nanofluids
AIP Advances, 2016 We perform near-wall velocity measurements of a SiO2–water nanofluid inside a microchannel. Nanoparticle image velocimetry measurements at three visible depths within 500 nm of the wall are conducted.
Anoop Kanjirakat, Reza Sadr
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