Results 31 to 40 of about 41,589 (237)
Tiltrotor CFD part II: aerodynamic optimisation of tiltrotor blades [PDF]
, 2017 This paper presents aerodynamic optimisation of tiltrotor blades with high-fidelity computational fluid dynamics. The employed optimisation framework is based on a quasi-Newton method, and the required high-fidelity flow gradients were computed using a
Barakos, G.N. +5 more
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Multidisciplinary design of a micro-USV for re-entry operations [PDF]
, 2010 Unmanned Space Vehicles (USV) are seen as a test-bed for enabling technologies and as a carrier to deliver and return experiments to and from low-Earth orbit.
Liqiang, Hou +2 more
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Applied Sciences, 2022 Due to the inherent uncertainties in material properties, loads, geometric dimensions, et al., the uncertainty-based optimization design method has become increasingly important for the design of the thermal protection system (TPS) by carefully ...
Ruixing Wang, Yan Luo
doaj +1 more source
Aerodynamic Shape Optimization Using Automatic Adaptive Remeshing [PDF]
, 1997 This work presents a new methodology base on the use adaptive mesh refinement (AMR) techniques in the context of shape optimization problems analyzed by the Finite Element Method. A suitable and very general technique for the parametrization of the optimization problem using B-splines to define the boundary is first presented.
Bugeda, Gabriel +2 more
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An optimization method for nacelle design [PDF]
, 2017 A multi-objective optimiZation method is demonstrated using an evolutionary genetic algorithm. The applicability of this method to preliminary nacelle design is demonstrated by coupling it with a response surface model of a wide range of nacelle designs.
Heidebrecht, A. +2 more
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Multi-Objective Aerodynamic Optimization of the Streamlined Shape of High-Speed Trains Based on the Kriging Model. [PDF]
PLoS ONE, 2017 Minimizing the aerodynamic drag and the lift of the train coach remains a key issue for high-speed trains. With the development of computing technology and computational fluid dynamics (CFD) in the engineering field, CFD has been successfully applied to ...
Gang Xu +4 more
doaj +1 more source
Computational Aerodynamics: Solvers and Shape Optimization [PDF]
Journal of Heat Transfer, 2012 Aeronautics, and in particular aerodynamics, has been one of the main technological drivers for the development of computational fluid dynamics (CFD). This paper presents a personal account of the main advances in the development of solvers and shape optimization techniques, which have contributed to make CFD an essential part of the design process of ...
Luigi Martinelli, Antony Jameson
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An Improved Multi-Objective Particle Swarm Optimization Method for Rotor Airfoil Design
Aerospace, 2023 In this study, a multi-objective aerodynamic optimization is performed on the rotor airfoil via an improved MOPSO (multi-objective particle swarm optimization) method.
Yongchuan Wu, Gang Sun, Jun Tao
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Quantification of airfoil geometry-induced aerodynamic uncertainties - comparison of approaches [PDF]
, 2016 Uncertainty quantification in aerodynamic simulations calls for efficient numerical methods since it is computationally expensive, especially for the uncertainties caused by random geometry variations which involve a large number of variables. This paper
Litvinenko, Alexander +3 more
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HeliyonThe paper outlines the development and optimization of an aerodynamic device for a semi-trailer truck model to reduce aerodynamic drag force. The optimization procedure involves the selection of a basic aerodynamic device shape, using airfoil profiles ...
Stjepan Galamboš +5 more
doaj +1 more source