Results 11 to 20 of about 34,022 (289)

A Novel Analytical Wake Model with a Cosine-Shaped Velocity Deficit [PDF]

open access: yesEnergies, 2020
A novel analytical model is proposed and validated in this paper to predict the velocity deficit in the wake downwind of a wind turbine. The model is derived by employing mass and momentum conservation and assuming a cosine-shaped distribution for the ...
Ziyu Zhang, Peng Huang, Haocheng Sun
doaj   +5 more sources

The deficit of the isometric tetanic tension redeveloped after a release of frog muscle at a constant velocity. [PDF]

open access: yesJournal of General Physiology, 1979
Frog sartorius muscles tetanized isometrically were released at a constant velocity from lengths lL to lS (delta l = lL -lS; Ls greater than lO). The tension PS redeveloped after the release was lower than the isometric tension PS at LS, and higher than the isometric tension PL at lL. The tension deficit D is defined as the difference PS-PS. The timing
L Plaghki
exaly   +6 more sources

Seasonality and determinants of child growth velocity and growth deficit in rural southwest Ethiopia [PDF]

open access: yesBMC Pediatrics, 2018
Background Ethiopia faces cyclic food insecurity that alternates between pre- and post- harvest seasons. Whether seasonal variation in access to food is associated with child growth has not been assessed empirically.
Netsanet Fentahun   +3 more
doaj   +6 more sources

Percentage-Based Change of Direction Deficit: A New Approach to Standardize Time- and Velocity-Derived Calculations [PDF]

open access: yesJournal of Strength & Conditioning Research, 2021
Abstract Freitas, TT, Pereira, LA, Alcaraz, PE, Azevedo, PHSM, Bishop, C, and Loturco, I. Percentage-based change of direction deficit: a new approach to standardize time- and velocity-derived calculations. J Strength Cond Res 36(12): 3521–3526, 2022—Change of direction (COD) efforts are crucial in team sports, and an extensive body of ...
Tomás T. Freitas   +5 more
openaire   +4 more sources

Analytical and numerical study of the expansion effect on the velocity deficit of rotating detonation waves [PDF]

open access: yesCombustion Theory and Modelling, 2020
In this work, a quasi-one-dimensional ZND model of detonation considering the expansion process perpendicular to the detonation propagation direction is extended to the rotating detonation engine (...
Songbai Yao, Jian-Ping Wang
exaly   +2 more sources

Geodetic Constraints on Segment-Scale Slip Rates and Interseismic Coupling Along the Havran–Balıkesir Fault Zone, NW Anatolia, Türkiye [PDF]

open access: yesSensors
This study presents a new high-resolution GNSS-derived velocity field and the first internally consistent, segment-resolved block model for the Havran–Balıkesir Fault Zone (HBFZ) in western Anatolia.
İbrahim Tiryakioğlu   +12 more
doaj   +2 more sources

The Vertical Force-velocity Profile in Male Under-20 National Team Rugby XV Union Players

open access: yesInternational Journal of Strength and Conditioning
Purpose: The main aim of the present study was to describe the Vertical Force-velocity (F-v) profile in male Under-20 (U-20) national team rugby XV union players.
Pablo Pérez-Ifrán   +3 more
doaj   +3 more sources

Vertical and Spanwise Wake Flow Structures of a Single Spire over Smooth Wall Surface in a Wind Tunnel [PDF]

open access: yesJournal 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

Wake of Elongated Low-Rise Building at Oblique Incidences

open access: yesAtmosphere, 2021
We investigated the turbulent wake of an elongated low-rise building at oblique wind incidence via wind tunnel experiments and numerical simulations. The deflection phenomenon of mean building wake is clearly supported by the downwind trajectory of the ...
Fei Wang, Kit Ming Lam
doaj   +1 more source

Numerical simulation of vortices with axial velocity deficits [PDF]

open access: yesPhysics of Fluids, 1995
Axial velocity deficit is a source of instability in vortices that may otherwise be stable. Temporal large-eddy simulation is performed to study the response of vortices with axial velocity deficits to random and controlled disturbances at high Reynolds numbers. The q vortex [Batchelor, J. Fluid Mech. 20, 321 (1964)] is used as a model of such vortices.
Ragab, Saad A., Sreedhar, M.
openaire   +3 more sources

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