Results 21 to 30 of about 21,879 (220)

Optimization and Design of a Flexible Droop-Nose Leading-Edge Morphing Wing Based on a Novel Black Widow Optimization Algorithm—Part I

open access: yesDesigns, 2022
An aerodynamic optimization for a Droop-Nose Leading-Edge (DNLE) morphing of a well-known UAV, the UAS-S45, is proposed, using a novel Black Widow Optimization (BWO) algorithm.
Musavir Bashir   +3 more
doaj   +1 more source

Inexpensive airfoil shape optimization for vertical axis wind turbine and its validation

open access: yesJournal of Fluid Science and Technology, 2015
In this research, an inexpensive aerodynamic shape optimization of airfoil is performed for Darrieus type vertical axis wind turbine (VAWT). Computational fluid dynamics (CFD) evaluations of various airfoil shapes are treated inexpensively by considering
Wataru YAMAZAKI, Yuta ARAKAWA
doaj   +1 more source

An Improved Multi-Objective Particle Swarm Optimization Method for Rotor Airfoil Design

open access: yesAerospace, 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
doaj   +1 more source

Quantification of airfoil geometry-induced aerodynamic uncertainties - comparison of approaches [PDF]

open access: yes, 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
core   +2 more sources

Optimization of a human-powered aircraft using fluid–structure interaction simulations [PDF]

open access: yes, 2016
The special type of aircrafts in which the human power of the pilot is sufficient to take off and sustain flight are known as Human-Powered Aircrafts (HPAs).
Degroote, Joris   +3 more
core   +3 more sources

Integral Airfoil Generation of Multi-rotor Aircraft Based on Optimization of Upper Wing Contour and CFD Simulation [PDF]

open access: yesJournal of Applied Fluid Mechanics
Regarding the airfoil optimization design of multi-rotor unmanned aerial vehicles, this paper proposes an integral airfoil design method based on upper airfoil contour optimization. Firstly, by designing concave descent input curves with 0-1 distribution,
Z. Wang   +4 more
doaj   +1 more source

Using genetic algorithms to optimize airfoils in incompressible regime [PDF]

open access: yesINCAS Bulletin, 2019
Aerodynamic optimization is a very actual problem in aircraft design and airfoils are basic two-dimensional shape forming cross sections of wings. Traditionally, the airfoil geometry if defined by a very large number of coordinates. Nowadays, in order to
Adrian DINA   +3 more
doaj   +1 more source

CFD Analysis and Shape Optimization of Airfoils Using Class Shape Transformation and Genetic Algorithm—Part I

open access: yesApplied Sciences, 2021
This paper presents the parameterization and optimization of two well-known airfoils. The aerodynamic shape optimization investigation includes the subsonic (NREL S-821) and transonic airfoils (RAE-2822).
Md Tausif Akram, Man-Hoe Kim
doaj   +1 more source

An Airfoil Shape Optimization Technique coupling PARSEC Parameterization and Evolutionary Algorithm [PDF]

open access: yes, 2014
In this work an innovative optimization process for airfoil geometry design is introduced. This procedure is based on the coupling of a PARSEC parameterization for airfoil shape and a genetic algorithms (GA) optimization method to find Nash equilibria ...
E. D'Amato, E. Daniele, P. Della Vecchia
core   +1 more source

DESIGN OPTIMIZATION OF TRANSONIC AIRFOILS [PDF]

open access: yesEngineering Optimization, 1993
Numerical optimization procedures have been considered for the design of airfoils in transonic flow based on the transonic small-disturbance (TSD) and Euler equations. A sequential approximation optimization technique was implemented with an accurate approximation of the wave drag based on Nixon's coordinate straining approach.
C.-Y. JOH, B. GROSSMAN, R.T. HAFTKA
openaire   +1 more source

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