Results 81 to 90 of about 10,991,666 (202)

Experimental and Mathematical Modeling of Unsteady Flow Around Darrieus H-Rotor of Vertical-Axis Wind Turbines

Fluids
Small-scale vertical-axis wind turbines (VAWTs) are increasingly essential for the “blue economy,” providing autonomous power to remote coastal communities, offshore platforms, and marine industries.
Serhii Tarasov, Dmytro Redchyts, Koldo Portal-Porras, Unai Fernandez-Gamiz, Ihor Kostyukov, Andrii Tarasov, Svitlana Moiseienko, Volodymyr Zaika, Jesus María Blanco Ilzarbe   +8 more
doaj   +1 more source

Numerical simulation of the dynamic stall of a NACA 0012 airfoil using DES and advanced OES/URANS modelling

, 2007
International audienceThis paper provides a study of the dynamic stall of a pitching NACA 0012 airfoil at 106 Reynolds number by means of numerical simulation.
Hoarau, Yannis, Harran, Gilles, Martinat, G., Braza, Marianna   +3 more
core   +1 more source

Hybrid URANS-LES modeling for the simulation of turbulent flows

, 2018
Most of the flows occurring in nature are turbulent. The same can be said about flows of industrial interest. Thus, the differential mathematical modeling of fluid flows enables us to better understand the physical phenomena involved in its occurrence,
Elias, Alex José
core   +1 more source

The simulation of turbulent flow with the fence by different external conditions on the base of hybrid LES/URANS-approach. Part 1

, 2015
Нестационарный трехмерный турбулентный поток несжимаемой жидкости над прямоугольной двумерной преградой в пограничном слое численно исследуется, используя гибридный LES/URANS-подход, пристенные модели и конечно-разностный метод.Нестаціонарний тривимірний
Кузьменко, В.Г.
core   +1 more source

Computational prediction of hydrodynamic coefficients for heave motion

Seatific Journal
In this study, the hydrodynamic coefficients associated with heave motion are obtained by using unsteady Reynolds-averaged Navier-Stokes (URANS) approach.
Ferdi Çakıcı, Emre Kahramanoğlu, Süleyman Duman, Ahmet Dursun Alkan   +3 more
doaj   +1 more source

Numerical Methods Comparison of Shock-Induced Separation on Transonic Axisymmetric Hump

Applied Sciences
A transonic hump with a Mach number (M∞) of 0.875 was utilized to compare the prediction capabilities of RANS, URANS, IDDES, and IDDES-SLA for shock-induced separation. The results matched the experimental data concerning pressure, friction coefficients,
Miao Zhang, Zhuoyue Tian, Songxiang Tang, Ziyan Wei, Jie Li   +4 more
doaj   +1 more source

CFD Simulations and Phenomenological Modelling of Aerodynamic Stall Hysteresis of NACA 0018 Wing

Aerospace
Computational simulations of three-dimensional flow around a NACA 0018 wing with an aspect ratio of AR=5 were carried out by using the Unsteady Reynolds-Averaged Navier–Stokes (URANS) equations with the Shear-Stress Transport turbulence model closure ...
Mohamed Sereez, Nikolay Abramov, Mikhail Goman   +2 more
doaj   +1 more source

CFD-based design optimization of ducted hydrokinetic turbines. [PDF]

Sci Rep, 2023
Park J, Knight BG, Liao Y, Mangano M, Pacini B, Maki KJ, Martins JRRA, Sun J, Pan Y.   +8 more
europepmc   +1 more source

DNS–URANS comparison study on cough-induced flow and particles in a large-scale circulation [PDF]

Purpose The purpose of this study is to perform direct numerical simulation (DNS) and unsteady Reynolds-averaged Navier–Stokes simulation (URANS) of cough-induced flow and particles in a large-scale circulation (LSC) to assess the performance and ...
Wagner, Claus, Batmaz, Ege, Schmeling, Daniel   +2 more
core   +1 more source

URANS and DES simulation of flow around bridge sections

, 2006
This paper deals with the numerical simulation of the flow around three different two-dimensional bluff bodies: a 1:1 square cylinder, a 1:5 rectangular cylinder and a realistic bridge section. The Unsteady Reynolds-Averaged Navier-Stokes (URANS) and the
Schewe, Günter, Voß, Ralph, Mannini, Claudio, Soda, Ante   +3 more
core