...Jiawang Zeng; Ming-Zhi Yang; Lei Zhang; Tongtong Lin; Sha Zhong; Yu Tao Purpose The aerodynamic load caused by high-speed train operation may lead to severe vibration of the pedestrian bridge, thus causing great safety hazards. Therefore, this study aims to investigate the aerodynamic loading...

...Xiaohui Xiong; Jiaxu Geng; Kaiwen Wang; Xinran Wang Purpose This paper aims to investigate the effect of different wing height layouts on the aerodynamic performance and flow structure of high-speed train, in a train-wing coupling method with multiple tandem wings installed on the train roof...

... layers and, in the wake, be able to modify the upstream shock–boundary layer interaction (SBLI) around an A320 morphing prototype to control these instabilities, with emphasis to the attenuation or even suppression of the transonic buffet. The modification of the aerodynamic performances according...

...Jianbin Luo; Mingsen Li; Ke Mi; Zhida Liang; Xiaofeng Chen; Lei Ye; Yuanhao Tie; Song Xu; Haiguo Zhang; Guiguang Chen; Chunmei Jiang Purpose The purpose of this paper is to study the aerodynamic characteristics of Ahmed body in longitudinal and lateral platoons under crosswind by computational...

... coefficient under the two conditions is obtained by response surface optimization. At the same time, the aerodynamic characteristics of the mixed platoon driving under different conditions are also analyzed. Findings The configuration with the lowest average drag coefficient under no crosswind conditions...

... an aeroballistic workflow, comprising aerodynamic characterization and flight trajectory computation. First, a single-objective optimization is run with genetic algorithms to find the maximal attainable range for this type of projectile. Then, a multi-objective formulation of the problem is proposed to consider...

.... Findings A synthetic jet with the optimal shape and orientation enforces the flow reattachment on the wing-flap surface. This leads to an improvement of the aerodynamic performance of the system. The wake thickness was reduced by 30%, and an increase of 17.6% in lift-to-drag ratio was obtained. Concerning...

... to a quasi-two-dimensional wake, benefits on the aerodynamic performance and a decrease of the frequency peaks in the spectrum, corresponding to an attenuation of the coherent structures. Originality/value This study provides a fundamental understanding of how the actuation modifies the coherent...

...Mehmet Numan Kaya; Oguz Uzol; Derek Ingham; Faruk Köse; Riza Buyukzeren Purpose The purpose of this paper is to thoroughly investigate the aerodynamic effects of blade pitch angle on small scaled horizontal axis wind turbines (HAWTs) using computational fluid dynamics (CFD) method to find out...

...Wagdi G. Habashi; Maged Yassin Purpose The purpose of this paper is to advance the multiphysics analysis of helicopter rotors under icing conditions by coupling the iced rotor’s aerodynamics, analyzed by CFD, with the rotor’s structural characteristics, analyzed by CSD. Design/methodology...

... during take-off. The flap passes several through critical intermediate position during the deployment to its design position. The purpose of this paper is to analyse the aerodynamics. Design/methodology/approach To better understand such flow phenomena, the combined approach of computational fluid...

...Younes Menni; A. Chamkha; Chafika Zidani; Boumédiène Benyoucef Purpose A computational fluid dynamics (CFD) analysis has been carried out on the aerodynamic and thermal behavior of an incompressible Newtonian fluid having a constant property and flowing turbulently through a two-dimensional...

...Cédric Decrocq; Bastien Martinez; Marie Albisser; Simona Dobre; Patrick Gnemmi; Yannick Bailly; Jean-Claude Roy Purpose The present paper deals with weapon aerodynamics and aims to describe preliminary studies that were conducted for developing the next generation of long-range guided ammunition...

...Abderrahmane Baïri; David San Martin; Iken Baïri; Kemi Adeyeye; Kaiming She; Ali Hocine; Nacim Alilat; Cyril Lamriben; Jean-Gabriel Bauzin; Bruno Chanetz; Najib Laraqi Purpose The purpose of this paper is to examine the details of the air mass flow and aerodynamical phenomena across a channel...

...Abderrahmane Baïri; Cyril Crua; Jean-Gabriel Bauzin; Iken Baïri Purpose – The purpose of this paper is to examine the aerodynamical and air mass flow phenomena taking place in the channel of a modified version of one of the well-known Sistan wind mills, in order to improve its aerodynamic...

...‐velocity coupling was performed by the SIMPLEC algorithm and convection terms were discretized by using the second‐order upwind discretization scheme. Findings Computed aerodynamic coefficients were in good agreement with the experimental results. Flap augmented lift and pitching moment coefficients...

... © Emerald Group Publishing Limited 2009 Aerodynamics Heating Viscosity Equilibrium methods Hypersonic flow c_i= mass fraction of species i, ρ_i/ ρ C_p= specific heat at constant pressure...

... Group Publishing Limited 2009 Aerodynamics Heating Aircraft d average of three cell edge lengths h streamline metric coefficient H enthalpy M Mach number N turbulent velocity profile exponent n₁, n₂, n₃ vertices of a triangular cell...

...Bijan Mohammadi This paper presents a shape optimization problem under acoustic, aerodynamic and geometric constraints. The acoustic specification concerns the generated sonic boom. The aim is to see the validity of incomplete sensitivities when a nonlinear CFD model is coupled with a nonlinear...

... with the experimental data. © Emerald Group Publishing Limited 2004 Plasma physics Aerodynamics Flow Electromagnetic radiation Magnetoplasmadynamic (MPD) self‐field thrusters are candidates for propelling manned spacecraft to Mars because they can achieve a high exhaust velocity combined...