Results 51 to 60 of about 10,991,666 (202)

Assessment of a Mid-Fidelity Numerical Approach for the Investigation of Tiltrotor Aerodynamics

open access: yesApplied Sciences, 2021
The study of the complex aerodynamics that characterise tiltrotors represents a challenge for computational fluid dynamics tools. URANS numerical solvers are typically used to explore the aerodynamic features that characterise the different flight ...
Alex Zanotti   +4 more
doaj   +1 more source

The simulation of unsteady turbulent flow with obstacle on the base of hybrid LES/URANS-approach [PDF]

open access: yes, 2013
Нестационарный трехмерный турбулентный поток несжимаемой жидкости над прямоугольной двумерной преградой на плоской пластине в пограничном слое с турбулизацией внешнего потока численно исследуется, используя гибридный LES/URANS-подход, пристенные модели и
Кузьменко, В.Г.
core   +1 more source

Simulation of Particle-Gas Flow in a Cyclone Using URANS [PDF]

open access: yes, 2011
Particle-gas flow in a cyclone separator used in a circulating fluidized-bed boiler is simulated using computational fluid dynamics software Fluent 6.2.36 and an Unsteady Reynolds-Averaged Navier-Stokes (URANS) method.
Karvinen, Aku   +2 more
core   +1 more source

An Arbitrary Hybrid Turbulence Modeling Approach for Efficient and Accurate Automotive Aerodynamic Analysis and Design Optimization

open access: yesFluids, 2021
The demand in solving complex turbulent fluid flows has been growing rapidly in the automotive industry for the last decade as engineers strive to design better vehicles to improve drag coefficients, noise levels and drivability.
Saule Maulenkul   +6 more
doaj   +1 more source

Blade Count and Rotational Speed Sensitivity of Vertical‐Axis Turbines Under Guided Vehicle‐Generated Transient Wakes

open access: yesEnergy Science &Engineering, Volume 14, Issue 7, Page 3324-3345, July 2026.
Passing vehicles generate short‐duration wakes that can be redirected toward a vertical‐axis turbine. The interaction between wake structure, blade count, and rotational speed governs transient torque production. Low‐solidity configurations combined with tuned rotational speed enhance energy extraction under vehicle‐induced gusts.
Aydin Ulus, Stefan Ilie Moldovan
wiley   +1 more source

URANS prediction of roll damping for a ship hull section at shallow draft

open access: yes, 2016
It is analytically difficult to calculate roll damping of ships due to the effects of viscosity. Therefore, computational fluid dynamics (CFD) has become a powerful tool in predicting roll damping recently.
KATAYAMA, Toru   +3 more
core   +1 more source

Prototyping an Innovative Ducted Fan System With Multi‐element Wings for the Electric Propulsion of Flying Devices

open access: yesMacromolecular Symposia, Volume 415, Issue 3, June 2026.
ABSTRACT This paper presents theoretical aspects and experimental tests for the design and optimization of a novel ducted fan propulsion system, complemented by multi‐element wings inspired by Handley Page and the aerodynamic Channel Wing concept.
Adrian Niță   +4 more
wiley   +1 more source

Turbulence Modeling Technique has Significant Effects on the Optimization of Centrifugal Blood Pumps

open access: yesIEEE Access
Blood pumps need to be further optimized to reduce blood damage and associated clinical complications. Turbulence is the key factor affecting blood damage.
Zhigang Pan, Fei-Hong Gao, Peng Wu
doaj   +1 more source

NUMERICAL AND EXPERIMENTAL CALCULATION OF ROLL AMPLITUDE EFFECT ON ROLL DAMPING

open access: yesBrodogradnja, 2019
Roll motion is still a challenging problem in naval architecture and an adequate prediction of this physical phenomenon is important because of its undesirable effects such as capsizing.
Burak Yıldız   +3 more
doaj   +1 more source

Ocean Wave Modulation of Offshore Wind Turbine Loads and Wake

open access: yesWind 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   +2 more
wiley   +1 more source

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