Results 21 to 30 of about 7,125 (216)

Wind Tunnel Testing on Crosswind Aerodynamic Forces Acting on Railway Vehicles

Journal of Fluid Science and Technology, 2010
This study is devoted to measure the aerodynamic forces acting on two railway trains, one of which is a high-speed train at 300km/h maximum operation speed, and the other is a conventional train at the operating speed 100km/h. The three-dimensional train
Hyeok-bin KWON, Seong-won NAM, Won-hee YOU   +2 more
doaj   +1 more source

The Refined Simulation Methods of Fluctuating Wind and Aerodynamic Forces Relative to Moving Trains

Applied Sciences
This study proposes a framework to accurately simulate the fluctuating wind and aerodynamic forces relative to moving trains. It provides a novel method for calculating the power spectra of the fluctuating wind relative to moving trains and the time ...
Naijie Yan, Ning Chen, Aiqiong Tang, Yonghua Su, Hui Guo, Qiqi Xiang   +5 more
doaj   +1 more source

Visual Explainable Convolutional Neural Network for Aerodynamic Coefficient Prediction

International Journal of Aerospace Engineering, 2022
Recently, aerodynamic performance analysis has been widely studied due to its importance in aircraft design. Most works adopted computational fluid dynamics (CFD) simulation to compute the aerodynamic forces, which is time consuming.
Yanxuan Zhao, Chengwen Zhong, Fang Wang, Yueqing Wang   +3 more
doaj   +1 more source

Simulating the aerodynamical resuspension of a granular bed of microparticles [PDF]

EPJ Web of Conferences
The deposition of micrometric particles in layers on various surfaces (e.g., ventilation ducts, industrial environments, nuclear reactors) has raised concerns due to potential resuspension in enclosed spaces or the atmosphere.
Sirur Flores Anuar Yamil, Benito Jesica Gisele, Uñac Rodolfo Omar, Vidales Ana María   +3 more
doaj   +1 more source

Aerodynamic effects of corrugation configurations in sweeping- pitching flight [PDF]

MATEC Web of Conferences, 2020
Some insects possess corrugated wings, which distinguish from the ordinary airfoils. It is important to research the corrugation effect on the aerodynamic performances.
Xuan Haibin, Hu Jun, Yu Yong, Zhang Jiaolong   +3 more
doaj   +1 more source

Simulation on Powered Effects of BWB at Take-off Condition

Xibei Gongye Daxue Xuebao, 2020
The influence of engine powered effects on aerodynamic characteristics of BWB300, which was designed by the Airplane Concept Design Institute of Northwestern Polytechnical University, at take-off condition was analyzed by using the numerical simulation ...

doaj   +1 more source

Two-Dimensional URANS Numerical Investigation of Critical Parameters on a Pitch Oscillating VAWT Airfoil under Dynamic Stall

Energies, 2022
In this paper, a thorough 2D unsteady computational fluid dynamic analysis was performed on a pitching airfoil to properly comprehend the dynamic stall and aerodynamic forces.
Tariq Ullah, Krzysztof Sobczak, Grzegorz Liśkiewicz, Amjid Khan   +3 more
doaj   +1 more source

Active Flutter Suppression of a Wing Section in a Compressible Flow

Aerospace, 2022
In this paper, a unified method for the computation of the unsteady aerodynamic forces in the Laplace domain for a wing section in subsonic, sonic and supersonic potential flows is presented.
Álvaro Muñoz, Pablo García-Fogeda
doaj   +1 more source

On the Determination of the Aerodynamic Damping of Wind Turbines Using the Forced Oscillations Method in Wind Tunnel Experiments

Energies, 2019
The development of wind turbine technology has led to higher and larger wind turbines with a higher sensitivity to dynamic effects. One of these effects is the aerodynamic damping, which introduces favorable damping forces in oscillating wind turbines ...
Robert Fontecha, Frank Kemper, Markus Feldmann   +2 more
doaj   +1 more source

Heterogeneity in the Global Practice of Central Nervous System Staging in Pediatric Acute Lymphoblastic Leukemia

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Central nervous system (CNS) involvement in childhood acute lymphoblastic leukemia (ALL) is assessed by cell counting and cytomorphology from cerebrospinal fluid (CSF) and is used for treatment stratification worldwide. The ratio of “CNS2” patients in clinical trials ranges from 3% to 40%, with unclear prognostic significance ...
Laura Almási, Bernadett Borbála Huszti, Gábor Barna, Marko Kavcic, Janez Jazbec, Lennart Lenk, Vera Münch, Sophia Polychronopoulou, Ágnes Márk, Maria Thastrup, Lüder H. Meyer, Kjeld Schmiegelow, Cornelia Eckert, Christina Halsey, Dániel J. Erdélyi   +14 more
wiley   +1 more source