Results 71 to 80 of about 10,991,666 (202)

Shrouded Wind and Water Turbine Analytical Model Extensions for Tip Gaps, Center Bodies, and Flow Blockage

Wind Energy, Volume 29, Issue 2, February 2026.
ABSTRACT This paper provides improvements to a previously presented simple, accurate, lower order analytical model for predicting the performance of horizontal‐axis shrouded turbines for a wide range of shroud airfoil shapes varying in length, camber, and thickness. The new, extended model incorporates explicit quantitative predictions of those effects
M. J. Werle
wiley   +1 more source

Modeling Interactions and Dynamic Saturation Processes in Karst Media

Water Resources Research, Volume 62, Issue 2, February 2026.
Abstract The simulation of karst aquifers is highly challenging due to complex conduit‐matrix interactions. This study utilizes KarstFOAM, a high‐fidelity, physics‐based numerical model, to address these challenges. KarstFOAM integrates (a) a unified single‐domain Forchheimer–Darcy–Brinkman–Stokes (FDBS) formulation that transitions naturally across ...
Fuyun Huang, Yuan Gao, Liangjie Zhao, Dingbao Wang, Xiaonong Hu, Xiaoguang Wang   +5 more
wiley   +1 more source

Improved version of LeMoS hybrid model for ambiguous grid densities

International Journal of Naval Architecture and Ocean Engineering, 2018
Application of the LeMoS hybrid (LH) URANS/LES method for the wake parameters prediction is considered. The wake fraction coefficient is calculated for inland ship model M1926 under shallow water conditions and compared to results of PIV measurements. It
I. Shevchuk, N. Kornev
doaj   +1 more source

Numerical investigation of unsteady flow past rudimentary landing gear using DDES, LES and URANS

Engineering Applications of Computational Fluid Mechanics, 2018
Massively unsteady separated flow past a four-wheel rudimentary landing gear is computed based on three different numerical approaches. The methods include Delayed Detached Eddy Simulation (DDES) and the Unsteady Reynolds-Averaged Navier–Stokes (URANS ...
Qing-Li Dong, He-Yong Xu, Zheng-Yin Ye
doaj   +1 more source

ASSESSMENT OF THE CAPABILITY OF AVAILABLE METHODS OF FLOW FIELD NUMERICAL MODELLING ON THE EXAMPLE OF AIR FLOW THROUGH A CHANNEL WITH A CIRCULAR BUMP

TASK Quarterly, 2017
This paper is an attempt at a systematic approach to the flow field analysis in the case of air flowing through a straight channel with a circular bump. The results of the authors’ own experimental measurements are compared to those obtained by means of
SŁAWOMIR DYKAS, MIROSŁAW MAJKUT, KRYSTIAN SMOŁKA, MICHAŁ STROZIK   +3 more
doaj   +1 more source

Hull forms and straight forward CFD free running trials of high-speed shuttle vessels

Zhongguo Jianchuan Yanjiu, 2017
SV-SJTU high-speed shuttle vessels are developed by Shanghai Jiao Tong University for fine seakeeping and high speed purposes. A series of SV-SJTUs have been developed, and are introduced in this paper.
WEI Chengzhu, YI Hong, LI Yinghui
doaj   +1 more source

Gradient methods for solving inverse gravimetry and magnetometry problems on the Uran supercomputer

Numerical Methods and Programming (Vychislitel'nye Metody i Programmirovanie), 2015
Для решения трехмерных структурных обратных задач гравиметрии и магнитометрии о нахождении поверхностей раздела слоев постоянной плотности либо намагниченности для модели многослойной среды предложен линеаризованный модифицированный метод наискорейшего спуска с весовыми множителями.
openaire   +2 more sources

Evaluation of LES, IDDES and URANS for prediction of flow around a streamlined high-speed train

, 2022
The turbulent flow past a simplified Intercity-Express 3 high-speed train at ReH=6 7104 is investigated by a combination of wind tunnel experiments and numerical simulations using the large-eddy simulation (LES), the improved delayed detached eddy ...
He, Kan,, He, Kan, Gao, Guangjun,, Krajnovic, Sinisa,, Su, Xinchao, Su, Xinchao,, Krajnovic, Sinisa, Gao, Guangjun   +7 more
core   +1 more source

Numerical study of helicopter airframe aerodynamics combined with coaxial main rotor using the URANS method

Научный вестник МГТУ ГА
The work is dedicated to numerical modeling of Kamov Ka-226 helicopter aerodynamics for isolated helicopter airframe and helicopter airframe with coaxial main rotor.
S. G. Konstantinov, P. V. Makeev, A. I. Shomov   +2 more
doaj   +1 more source

Numerical analysis of transonic flow over the FFA-W3-211 wind turbine tip airfoil [PDF]

Wind Energy Science
Modern wind turbines are the largest rotating machines ever built, with blade lengths exceeding 100 m. Previous studies demonstrated how the flow around the tip airfoils of such large machines reaches local flow Mach numbers (Ma), at which the ...
M. C. Vitulano, M. C. Vitulano, D. De Tavernier, G. De Stefano, D. von Terzi   +4 more
doaj   +1 more source