Results 41 to 50 of about 11,397 (207)

Validation of Tidal Stream Turbine Wake Predictions and Analysis of Wake Recovery Mechanism

Journal of Marine Science and Engineering, 2019
This paper documents the predictive capability of rotating blade-resolved unsteady Reynolds averaged Navier-Stokes (URANS) and Improved Delayed Detached Eddy Simulation (IDDES) computations for tidal stream turbine performance and intermediate wake ...
Sanchit Salunkhe, Oumnia El Fajri, Shanti Bhushan, David Thompson, Daphne O’Doherty, Tim O’Doherty, Allan Mason-Jones   +6 more
doaj   +1 more source

Numerical Simulation of Taylor—Couette—Poiseuille Flow at Re = 10,000

Fluids, 2023
A fully developed turbulent flow in a concentric annulus, Re =10,000, ri/ro=0.5, with an inner rotating cylinder in the velocity range N=Uω/Ub=0÷4, is studied via a large-eddy simulation.
Andrey Gavrilov, Yaroslav Ignatenko
doaj   +1 more source

Out in the cold? A review of Early Middle Palaeolithic settlements in northern Central Europe, age data and geological preconditions for site formation and preservation

Boreas, EarlyView.
The characteristics of settlement of Neanderthals in northern Central Europe during the earlier phases of the Middle Palaeolithic (Marine Isotope Stage 8–6) have been a matter of debate for decades, specifically regarding the population dynamics at such latitudes during the coldest phases. In this paper, we review the known archaeological record of the
Gianpiero Di Maida, Jutta Winsemann, Malte Hoffmann, Tobias Lauer, Utz Böhner, Thomas Terberger   +5 more
wiley   +1 more source

Diurnal cycle RANS simulations applied to wind resource assessment [PDF]

, 2019
Microscale computational fluid dynamics (CFD) models can be used for wind resource assessment on complex terrains. These models generally assume neutral atmospheric stratification, an assumption that can lead to inaccurate modeling results and to large ...
Apsley, Avila, Avila, Ayotte, Castro, Chen, Dudhia, Gargallo-Peiró, Gargallo-Peiró, Hong, Houzeaux, Hristov, Janjic, Kain, Koblitz, Kumar, Mlawer, Monin, Palma, Panofsky, Pieterse, Sanz-Rodrigo, Sogachev, Svensson, Taylor, Veiga-Rodrigues, Vázquez   +26 more
core   +2 more sources

Ocean Wave Modulation of Offshore Wind Turbine Loads and Wake

Wind Energy, Volume 29, Issue 6, June 2026.
ABSTRACT This study examines how wave‐induced modulation affects the operational performance and structural dynamics of fixed‐bottom offshore wind turbines operating under a neutral atmospheric boundary layer profile. To capture these effects accurately while maintaining computational efficiency, unsteady RANS modelling techniques are employed.
Guillén Campaña‐Alonso, Beatriz Méndez‐López, Esteban Ferrer   +2 more
wiley   +1 more source

Aerodynamic model comparison for an X-shaped vertical-axis wind turbine [PDF]

Wind Energy Science
This article presents a comparison study of different aerodynamic models for an X-shaped vertical-axis wind turbine and offers insight into the 3D aerodynamics of this rotor at fixed pitch offsets.
A. Giri Ajay, L. Morgan, Y. Wu, D. Bretos, A. Cascales, O. Pires, C. Ferreira   +6 more
doaj   +1 more source

Acoustic Assessment of Twin-engined Turboprop Layout [PDF]

, 2018
No abstract ...
Barakos, George N., Brown, Nicholas, Chirico, Giulia   +2 more
core  

Shock‐Assisted Flow Control System in Convergent‐Divergent Nozzle: A Numerical Study on Unconventional Protuberance With Different Geometry

Engineering Reports, Volume 8, Issue 5, May 2026.
A numerical investigation using 3D RANS simulations demonstrates significant effects of protuberance geometry—cubic, cylindrical, spherical, and conical—on shock‐induced thrust vectoring in supersonic nozzles. Cubic protuberances provide the maximum jet deflection (˜2°) with negligible thrust reduction.
Mohammadreza Soufivand, Davood Mokhtari, Mohammad Hojaji, Annunziata D'Orazio   +3 more
wiley   +1 more source

Prediction of the unsteady turbulent flow in an axial compressor stage. Part 2: Analysis of unsteady RANS and LES data [PDF]

, 2015
This paper presents the analysis of URANS and LES database in a stage of an axial subsonic compressor. Details about numerical methods and comparison with experiments can be found in a companion paper.
Gourdain, Nicolas
core   +2 more sources

Impacts of Blade Camber on Cross‐Flow Turbine Performance and Loading

Wind Energy, Volume 29, Issue 5, May 2026.
ABSTRACT Cross‐flow turbines show promise for renewable energy generation from wind and tidal sources. The rotating reference frame of cross‐flow turbine blades results in virtual camber and incidence due to streamline curvature, altering the lift, drag, and pitching moment of the blades. Adding geometric camber is therefore likely to alter performance
Ari Athair, Caelan Consing, Jennifer A. Franck, Owen Williams   +3 more
wiley   +1 more source