Results 51 to 60 of about 41,222 (159)
Robust aerodynamic design of variable speed wind turbine rotors [PDF]
, 2012 This study focuses on the robust aerodynamic design of the bladed rotor of small horizontal axis wind turbines. The optimization process also considers the effects of manufacturing and assembly tolerances on the yearly energy production.
Campobasso, Michele Sergio +2 more
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Engineering Applications of Computational Fluid MechanicsMany aerodynamic shape optimization methods often focus on utilizing the end-to-end relationship between design variables and aerodynamic performance to find the optimal design, while overlooking the exploration of geometric knowledge of the shape itself.
Long Ma, Xiao-Jing Wu, Wei-Wei Zhang
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Advances in Aerodynamic Shape Optimization [PDF]
, 2005 The accumulated experience of the last decade suggests that most existing aircraft which cruise at transonic speeds are amenable to a drag reduction of the order of 3 to 5 percent, or an increase in the drag rise Mach number of at least .02. These improvements can be achieved by very small shape modifications, which are too subtle to allow their ...
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Aerodynamic Design and Shape Optimization with the Far-Field Drag Decomposition Approach
Xibei Gongye Daxue Xuebao, 2020 In the aerodynamic shape design, the drag prediction has always been an extremely challenging mission for the exploration of a configuration. As for the more complex configurations, it is especially desired to the availability of a highly accurate and ...
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Methodology for sensitivity analysis, approximate analysis, and design optimization in CFD for multidisciplinary applications [PDF]
Fundamental equations of aerodynamic sensitivity analysis and approximate analysis for the two dimensional thin layer Navier-Stokes equations are reviewed, and special boundary condition considerations necessary to apply these equations to isolated ...
Hou, Gene W., Taylor, Arthur C., III
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Coupled CFD Shape Optimization for aerodynamic profiles [PDF]
, 2016 The present document deals with the optimization of shape of aerodynamic profiles -- The objective is to reduce the drag coefficient on a given profile without penalising the lift coefficient -- A set of control points defining the geometry are passed ...
Giraldo Arias, Santiago
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Multi-objective Aerodynamic Optimization of High-speed Trains in Tunnels [PDF]
, 2013 A genetic algorithm (GA) is employed for the multi-objective shape optimization of the nose of a high-speed train. Aerodynamic problems observed at high speeds become still more relevant when traveling along a tunnel.
Crespo Martínez, Antonio +2 more
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Three-Dimensional Large-Scale Aerodynamic Shape Optimization Based on Shape Calculus [PDF]
AIAA Journal, 2011 Large-scale three-dimensional aerodynamic shape optimization based on the compressible Euler equations is considered. Shape calculus is used to derive an exact surface formulation of the gradients, enabling the computation of shape gradient information for each surface mesh node without having to calculate further mesh sensitivities.
Schmidt, Stephan +3 more
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Quantification of airfoil geometry-induced aerodynamic uncertainties - comparison of approaches
, 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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Aerodynamic Shape Optimization of a Missile Using a Multiobjective Genetic Algorithm
International Journal of Aerospace Engineering, 2020 The aim of this paper is to demonstrate the effects of the shape optimization on the missile performance at supersonic speeds. The N1G missile model shape variation, which decreased its aerodynamic drag and increased its aerodynamic lift at supersonic ...
Ahmet Şumnu +2 more
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