Results 21 to 30 of about 10,991,666 (202)

Development of an interface to introduce stationary LES data to the URANS solver THETA for HAWT performance prediction

Wind Energy, 2020
The impact of different sheared velocity profiles on the performance prediction of a horizontal axis wind turbine in the atmospheric boundary layer is investigated.
Annika Länger‐Möller
doaj   +1 more source

Roughness Effect on the Flow Past Axisymmetric Bodies at High Incidence

Aerospace, 2022
The flow at low Mach numbers and high angles of attack over axisymmetric configurations is not symmetric. The mechanism that triggers the asymmetry is a combination of a global (temporal) instability and a convective (spatial) instability.
José Jiménez-Varona, Gabriel Liaño, José L. Castillo, Pedro L. García-Ybarra   +3 more
doaj   +1 more source

On Cavitation Aggressiveness and Cavitation Erosion on Marine Propellers using a URANS Method [PDF]

, 2018
Cavitation occurrence on the propeller blades may have severe effects, such as cavitation noise, vibrations in the aft ship, and material damage on propellers or rudder. While noise and vibrations affect comfort and stability, cavitation erosion might lead to a significant reduction of the propeller efficiency and structural integrity.
Melissaris, Themistoklis (author), Bulten, Norbert (author), van Terwisga, T.J.C. (author)   +2 more
openaire   +3 more sources

Assessment of URANS and LES methods in predicting wake shed behind a vertical axis wind turbine

Journal of Wind Engineering and Industrial Aerodynamics, 2023
15 ...
Armin Sheidani, Sajad Salavatidezfouli, Giovanni Stabile, Gianluigi Rozza   +3 more
openaire   +2 more sources

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

Airflow characteristics under planar opposed ventilation jets in a controlled indoor environment [PDF]

E3S Web of Conferences, 2019
Healthy, comfortable and intelligent indoor environment is a key objective in comprehensive well-being. This is also a main target of advanced HVAC-technology.
Lestinen Sami, Wesseling Mark, Kosonen Risto, Koskela Hannu, Müller Dirk   +4 more
doaj   +1 more source

Confrontation Between Smoothed Particle Hydrodynamics and Unsteady Reynolds-averaged Navier–Stokes Methods for a Sinking Rigid Body [PDF]

Journal of Applied Fluid Mechanics
In this article, we present detailed numerical results concerning the hydrodynamic behavior of two distinct rigid bodies; a cylinder and a wedge; interacting with a free water surface.
A. Bel Hadj Taher, M. Ennouri, H. Kanfoudi   +2 more
doaj   +1 more source

Assessment of Hydrodynamic Loads on an Offshore Monopile Structure Considering Hydroelasticity Effects

Journal of Marine Science and Engineering, 2023
Regular and irregular waves were numerically generated in a wave canal to investigate hydrodynamic loads acting on a wind turbine monopile and to predict its structural response.
Michael Thome, Ould el Moctar, Thomas E. Schellin   +2 more
doaj   +1 more source

Airwake Characteristics of NATO-Generic Destroyer: A Numerical Study [PDF]

Journal of Applied Fluid Mechanics
This paper presents a numerical investigation of the air wake around a generic surface combatant ship called NATO-Generic Destroyer (NATO-GD). Naval surface combatants with flight decks must be designed taking aerodynamic concerns into account.
S. Sari, A. Dogrul, S. Bayraktar
doaj   +1 more source

Analysis of added resistance and seakeeping responses in head sea conditions for low-speed full ships using URANS approach

International Journal of Naval Architecture and Ocean Engineering, 2017
The KVLCC2 and its modified hull form were investigated in regular head waves using Unsteady Reynolds Averaged Navier–Stokes (URANS) methods. The modified KVLCC2 (named KWP-bow KVLCC2) is designed for reducing wave reflection from the bow.
Yoo-Chul Kim, Kwang-Soo Kim, Jin Kim, Yoonsik Kim, Il-Ryong Park, Young-Hun Jang   +5 more
doaj   +1 more source