Results 11 to 20 of about 185,421 (315)
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
doaj +1 more source
Vertical and Spanwise Wake Flow Structures of a Single Spire over Smooth Wall Surface in a Wind Tunnel [PDF]
Journal of Applied Fluid Mechanics, 2023 The aerodynamic interaction between the wake flow structure behind a single spire with a smooth wall boundary layer at a long streamwise location was observed in a wind tunnel experiment.
M. A. Fitriady +2 more
doaj +1 more source
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
doaj +1 more source
Universality of the Turbulent Velocity Profile [PDF]
Physical Review Letters, 2017 For nearly a century the universal logarithmic behaviour of the mean velocity profile in a parallel flow was a mainstay of turbulent fluid mechanics and its teaching. Yet many experiments and numerical simulations are not fit exceedingly well by it, and the question whether the logarithmic law is indeed universal keeps turning up in discussion and in ...
openaire +4 more sources
An Analytical Method for Reconstruction of Velocity Profiles using a Multi-Electrode Electromagnetic Flow Meter [PDF]
, 2013 An analytical method is developed for the reconstruction of velocity profiles using measured potential distributions obtained around the boundary of a multi-electrode electromagnetic flow meter.
Zhang, Zhichao +2 more
core +1 more source
Differences in the Force-Velocity profile between Judoist and freestyle wrestlers
, 2022 Background: The aim of this study was to gain new knowledge about the force-velocity (F-V) profile in Judoist and freestyle wrestlers, investigating if there were any differences between sports and which physical demands have which fighting modalities ...
Lozano Aguilera, Emilio D. +5 more
core +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source