Results 21 to 30 of about 6,869 (224)

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

open access: yesWind 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   +6 more
doaj   +1 more source

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

open access: yesJournal 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   +2 more
doaj   +1 more source

Unsteady cfd analysis of erosion mechanism in the coolant channels of a rotating gas turbine blade [PDF]

open access: yes, 2015
The two-phase flow in a rotating wedge mimicking the final portion of a blade turbine internal cooling channel is here presented and discussed focusing on unsteady motion and erosion mechanisms.
Anielli, Davide   +4 more
core   +1 more source

Multi-objective optimization of a wing fence on an unmanned aerial vehicle using surrogate-derived gradients [PDF]

open access: yes, 2020
In this paper, the multi-objective, multifidelity optimization of a wing fence on an unmanned aerial vehicle (UAV) near stall is presented. The UAV under consideration is characterized by a blended wing body (BWB), which increases its efficiency, and a ...
Couckuyt, Ivo   +4 more
core   +1 more source

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

open access: yesJournal 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   +2 more
doaj   +1 more source

Computational study of a complex three-dimensional shock boundary-layer interaction [PDF]

open access: yes, 2015
Shock boundary–layer interactions occur in many high-speed aerodynamic flows and they can have a notable impact on design considerations due to the aerodynamic and heat transfer effects.
Katzenberg, Joshua, MacManus, David G.
core   +2 more sources

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

open access: yesJournal 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

Numerical prediction method of shafting power characteristics of free self-propelled ship in waves

open access: yesZhongguo Jianchuan Yanjiu, 2022
ObjectiveTo investigate ship power characteristics and the difference between the towing model and self-propulsion model for ship motion response in waves, numerical simulations of ship self-propulsion performance in waves are carried out. MethodsIn this
Jiawei YU   +4 more
doaj   +1 more source

An efficient Two-Layer wall model for accurate numerical simulations of aeronautical applications [PDF]

open access: yes, 2019
Two-Layer wall models have been widely studied since they allow wall modeled Large Eddy Simulationsof general non-equilibrium flows. However, they are plagued by two persistent problems, the "log-layermismatch" and the resolved Reynolds stresses inflow ...
Calafell Sandiumenge, Joan   +2 more
core   +1 more source

A Comparative Study of Computational Methods for Wave-Induced Motions and Loads

open access: yesJournal of Marine Science and Engineering, 2021
Ship hull structural damages are often caused by extreme wave-induced loads. Reliable load predictions are required to minimize the risk of structural failures.
Jens Ley, Ould el Moctar
doaj   +1 more source

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