Results 11 to 20 of about 6,869 (224)

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

open access: yesInternational 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   +5 more
doaj   +3 more sources

Computational fluid dynamics challenges for hybrid air vehicle applications [PDF]

open access: yes, 2017
This paper begins by comparing turbulence models for the prediction of hybrid air vehicle (HAV) flows. A 6 : 1 prolate spheroid is employed for validation of the computational fluid dynamics (CFD) method.
Barakos, G.N.   +4 more
core   +2 more sources

On the validation and use of high-fidelity numerical simulations for gust response analysis [PDF]

open access: yes, 2018
Specific gust response is considered as one of the most important loads encountered by an aircraft. The Certification Specification (CS) 25, defined by the European Aviation Safety Agency (EASA), and the Federal Aviation Regulations (FAR) 25, defined by ...
Dequand, Sylvie   +3 more
core   +2 more sources

Grid resolution assessment method for hybrid RANS-LES in turbomachinery

open access: yesEngineering Applications of Computational Fluid Mechanics, 2022
Hybrid RANS-LES is a promising method for analyzing the complex flow structure in turbomachinery due to its excellent compromise between accuracy and computational cost.
Ruiyu Li   +4 more
doaj   +1 more source

Anisotropic Organised Eddy Simulation for the prediction of non-equilibrium turbulent flows around bodies [PDF]

open access: yes, 2008
The unsteady turbulent flow around bodies at high Reynolds number is predicted by an anisotropic eddy-viscosity model in the context of the Organised Eddy Simulation (OES).
Bourguet, Rémi   +3 more
core   +2 more sources

Roughness Effect on the Flow Past Axisymmetric Bodies at High Incidence

open access: yesAerospace, 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   +3 more
doaj   +1 more source

Numerical modelling of the aerodynamic interference between helicopter and ground obstacles [PDF]

open access: yes, 2017
Helicopters are frequently operating in confined areas where the complex flow fields that develop in windy conditions may result in dangerous situations.
Barakos, George N.   +3 more
core   +1 more source

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

open access: yesWind 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

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

open access: yesE3S 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   +4 more
doaj   +1 more source

Scale-adaptive simulation of unsteady cavitation around a naca66 hydrofoil [PDF]

open access: yes, 2019
Distances between consecutive aftershocks are analysed by means of mono- and multifractal theory with the aim of quantifying the complexity of the physical mechanism governing them, as well as their predictability and predictive instability.
Escaler Puigoriol, Francesc Xavier   +3 more
core   +2 more sources

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