Results 61 to 70 of about 41,222 (159)

Two-Stage Multi-Objective Optimization for Improving the Aerodynamic Characteristics of High-Speed Train Nose Shape

Fluids
An optimal high-speed train nose design was formulated to reduce aerodynamic drag, mitigate tunnel micro-pressure waves, and improve crosswind safety. Using the vehicle modeling function, the EMU-320 nose shape was derived and applied as the base model ...
Suhwan Yun, Minho Kwak, Hyungmin Kang, Wonhee Park, Taesoo Kwon   +4 more
doaj   +1 more source

Optimization and design of three-dimensional aerodynamic configurations of arbitrary shape by a vortex lattice method [PDF]

A new method based on vortex lattice theory has been developed which can be applied to the combined analysis, induced drag optimization, and aerodynamic design of three-dimensional configurations of arbitrary shape.
Feifel, W. M.
core   +1 more source

Progressive construction of a parametric reduced-order model for PDE-constrained optimization [PDF]

, 2014
An adaptive approach to using reduced-order models as surrogates in PDE-constrained optimization is introduced that breaks the traditional offline-online framework of model order reduction.
Farhat, Charbel, Zahr, Matthew J.
core  

Aerodynamic shape optimization of arbitrary hypersonic vehicles [PDF]

A new method was developed to optimize, in terms of aerodynamic wave drag minimization, arbitrary (nonaxisymmetric) hypersonic vehicles in modified Newtonian flow, while maintaining the initial volume and length of the vehicle.
Dulikravich, George S., Sheffer, Scott G.   +1 more
core   +1 more source

Investigation on Aerodynamics of Super–Effective Car for Drag Reduction. [PDF]

, 2016
This paper focuses on shape optimization of a car body to be used in Shell Eco Marathon race. The work consists of the review of aerodynamic performance for currently used shapes, definition of the design constraints for the vehicle and recommendations ...
Cieśliński, Artur, Prym, Wojciech, Stajuda, Mateusz, Witkowski, Dariusz   +3 more
core  

Integrated Aerodynamic Shape and Aero-Structural Optimization: Applications from Ahmed Body to NACA 0012 Airfoil and Wind Turbine Blades

Fluids
During this research, aerodynamic shape optimization is conducted on the Ahmed body with the drag coefficient as the objective function and the ramp shape as the design variable, while aero-structural optimization is conducted on NACA 0012 to reduce the ...
Sagidolla Batay, Aigerim Baidullayeva, Erkhan Sarsenov, Yong Zhao, Tongming Zhou, Eddie Yin Kwee Ng, Taldaubek Kadylulu   +6 more
doaj   +1 more source

Efficient Modal Design Variables Applied to Aerodynamic Optimization of a Modern Transport Wing [PDF]

, 2016
Aerodynamic shape optimization of a transonic wing using mathematically-extracted modal design variables is presented. A novel approach is used for deriving design variables using a proper orthogonal decomposition of a set of training aerofoils to obtain
Allen, Christian, Poole, Daniel, Rendall, Thomas   +2 more
core   +2 more sources

Manifold Learning for Aerodynamic Shape Design Optimization

Aerospace
The significant computational cost incurred due to the iterative nature of Computational Fluid Dynamics (CFD) in traditional aerodynamic shape design frameworks poses a major challenge, especially in the context of modern integrated design requirements ...
Boda Zheng, Abhijith Moni, Weigang Yao, Min Xu   +3 more
doaj   +1 more source

Multi-disciplinary robust design of variable speed wind turbines [PDF]

, 2011
This paper addresses the preliminary robust multi-disciplinary design of small wind turbines. The turbine to be designed is assumed to be connected to the grid by means of power electronic converters.
Campobasso, Michele Sergio, Dellantonio, Michele, Minisci, Edmondo, Montecucco, Andrea, Vasile, Massimiliano   +4 more
core  

An Improved Approach for Reducing the Dimensionality of Wing Aerodynamic Optimization Considering Longitudinal Stability

Aerospace
The wing aerodynamic shape optimization is a typical high-dimensional problem with numerous independent design variables. Researching methods to reduce the dimensionality of optimization from the perspective of aerodynamic characteristics is necessary ...
Boqian Ji, Jun Huang, Xiaoqiang Lu, Yacong Wu, Jingjiang Liu   +4 more
doaj   +1 more source