Results 41 to 50 of about 69,093 (209)

Parameterization adaption for 3D shape optimization in aerodynamics [PDF]

, 2014
When solving a PDE problem numerically, a certain mesh-refinement process is always implicit, and very classically, mesh adaptivity is a very effective means to accelerate grid convergence.
Majd, Badr Abou El
core   +3 more sources

Wing Design and Adaptive Optimization of a Compound Drone

气体物理
With the growing demand for unmanned transportation, the rise of compound drones is imperative. Aerodynamic optimization design plays a significant role in the development cycle of compound drones.
Wei ZHANG, Meng TAN, Yafeng LIU, Yongbin NIE, Yue LUAN   +4 more
doaj   +1 more source

Aerodynamic Optimization of a Winglet Design [PDF]

EPJ Web of Conferences, 2013
In the present study, an experimental study is presented for a flow around an isolated wing equipped by a winglet and profiled with Naca 0012. Several cases of winglets were tested according to the angle ß: 0°, 55°, 65°and 75°. For all these cases at a velocity of 20, 30 and 40 meters per second, wind tunnel tests are performed and compared for ...
S. Belferhat, Sidi Mohamed Amine Meftah, Tayeb Yahiaoui, Bachir Imine   +3 more
openaire   +2 more sources

Efficient Adaptive Robust Aerodynamic Design Optimization Considering Uncertain Inflow Variations for a Diffusion Airfoil Across All Operating Incidences

Aerospace
The random fluctuations in inlet flow represent a common uncertainty in aero-engine compressors, necessitating the control of its effects through blade optimization design.
Zhengtao Guo, Lei Bao, Chaolong Li, Xianzhong Gao, Wuli Chu   +4 more
doaj   +1 more source

Discrete Adjoint-Based Simultaneous Analysis and Design Approach for Conceptual Aerodynamic Optimization [PDF]

INCAS Bulletin, 2017
In this paper, a simultaneous analysis and design method is derived and applied for a non-linear constrained aerodynamic optimization problem. The method is based on the approach of defining a Lagrange functional based on the objective function and the ...
Oliviu SUGAR-GABOR
doaj   +1 more source

Aerodynamic Shape Optimization of a Square Cylinder with Multi-Parameter Corner Recession Modifications

Atmosphere, 2022
Corner modifications can reduce wind loads acting on supertall buildings and modify the corresponding flow structures. The present study investigated the aerodynamic shape optimization of the corner recession square cylinders with multiple geometric ...
Zhaoyong Wang, Chaorong Zheng, Joshua Adriel Mulyanto, Yue Wu   +3 more
doaj   +1 more source

Accelerated Airfoil Optimization via a Geometry-Based Discriminator Within Particle Swarm Optimization

IEEE Access
Particle swarm optimization (PSO) is widely used for aerodynamic shape optimization; however, its practical efficiency is often limited by the high computational cost of aerodynamic evaluations and the frequent generation of geometrically unrealistic ...
Leul Walelign Michael, Abdulazez Abagero, Abera Tullu, Yoseph Mekonnen Abebe, Sunghun Jung   +4 more
doaj   +1 more source

Research on Efficient Particle Swarm Optimization and Aerodynamic Stealth Integrated Design of Fly-wing UAV

Hangkong gongcheng jinzhan, 2019
To deal with the problem of aerodynamic and stealth integrated optimization of fly-wing UAV, a multi-objective optimization study on aerodynamic and stealth of the fly-wing UAV is carried out which based on the free-form surface deformation(FFD). The FFD
Fan Huayu, Zhan Hao, Cheng Shixin, Mi Baigang, Yao Huiqin   +4 more
doaj   +1 more source

Insight into High-quality Aerodynamic Design Spaces through Multi-objective Optimization [PDF]

, 2008
An approach to support the computational aerodynamic design process is presented and demonstrated through the application of a novel multi-objective variant of the Tabu Search optimization algorithm for continuous problems to the aerodynamic design ...
Clarkson, P. J., Dawes, Bill, Jaeggi, Daniel, Kipouros, Timoleon, Parks, Geoff, Savill, Mark A.   +5 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