A Novel Analytical Wake Model with a Cosine-Shaped Velocity Deficit [PDF]
Energies, 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
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Analytical and numerical study of the expansion effect on the velocity deficit of rotating detonation waves [PDF]
Combustion 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 (...
Shujie Zhang, Songbai Yao
exaly +2 more sources
Geodetic Constraints on Segment-Scale Slip Rates and Interseismic Coupling Along the Havran–Balıkesir Fault Zone, NW Anatolia, Türkiye [PDF]
SensorsThis 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
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EnergiesCommercial scale tidal stream turbines (TST) are expected to be deployed in shallow water where the depth varies from 1.5 to 3 turbine diameters. In this study, numerical simulation is conducted at realistic hydrodynamic conditions of potential tidal ...
Kabir Bashir Shariff, Sylvain S. Guillou
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Seasonality and determinants of child growth velocity and growth deficit in rural southwest Ethiopia [PDF]
BMC 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
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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
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Numerical simulation of vortices with axial velocity deficits [PDF]
Physics 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.
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Dynamic tensile‐failure‐induced velocity deficits in rock [PDF]
Geophysical Research Letters, 1991 Planar impact experiments were employed to induce dynamic tensile failure in Bedford limestone. Rock discs were impacted with aluminum and polymethyl methacralate (PMMA) flyer plates at velocities of 10 to 25 m/s. Tensile stress magnitudes and duration were chosen so as to induce a range of microcrack growth insufficient to cause complete spalling of ...
Rubin, Allan M., Ahrens, Thomas J.
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Wake of Elongated Low-Rise Building at Oblique Incidences
Atmosphere, 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
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Brief communication: A momentum-conserving superposition method applied to the super-Gaussian wind turbine wake model [PDF]
Wind Energy Science, 2023 Accurate wind farm flow predictions based on analytical wake models are crucial for wind farm design and layout optimization. In this regard, wake superposition methods play a key role and remain a substantial source of uncertainty.
F. Blondel
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