Results 11 to 20 of about 9,266,844 (203)

A study of the turbulent wake of an airfoil in an air stream with a 90° curvature using hot-wire anemometry and large eddy simulation [PDF]

open access: yes, 2008
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.The broad aim of the work presented in this thesis is to investigate the wake of an airfoil under the combined effects of streamwise curvature and pressure ...
Farsimadan, Ehsaan
core   +7 more sources

Multi-objective design optimization for high-lift aircraft configurations supported by surrogate modeling [PDF]

open access: yes, 2013
Nowadays, the competition among airlines seriously depend upon the saving operating costs, with the premise that not to degrade its services quality.
Li, Daxin
core   +7 more sources

Airfoil design via cubic splines - Ferguson's curves revisited [PDF]

open access: yes, 2007
Few aerospace design topics have had so many pages devoted to them as airfoil parameterization. Claims of novelty must therefore be made with caution in this area, so we declare our starting point simply as a fresh perspective on legacy techniques ...
Sobester, Andras, Keane, Andy J.
core   +2 more sources

Aerodynamics of wind turbines [PDF]

open access: yes, 2011
PhDThe study of rotor blade aerodynamic performances of wind tur- bine has been presented in this thesis. This study was focused on aero- dynamic effects changed by blade surface distribution as well as grid solution along the airfoil.
Emrah Kulunk, Horikiri, Kana
core   +5 more sources

Design of advanced airfoil for stall-regulated wind turbines [PDF]

open access: yesWind Energy Science, 2017
Nowadays, all the modern megawatt-class wind turbines make use of pitch control to optimise the rotor performance and control the turbine. However, for kilowatt-range machines, stall-regulated solutions are still attractive and largely used for their ...
F. Grasso   +3 more
doaj   +1 more source

Airfoil Inverse Design Method Based on Two-layer POD and BPNN

open access: yesHangkong gongcheng jinzhan, 2021
It is computationally intensive and time-consuming to perform a large number of CFD simulations in the process of airfoil optimization.In this paper, an airfoil inverse design method is developed by using the proper orthogonal decomposition(POD) and back
LI Chunna, JIA Xuyi, GONG Chunlin
doaj   +1 more source

Study on Multimodality in Aerodynamic Airfoil Optimization Design

open access: yesHangkong gongcheng jinzhan, 2019
Studying on the multi-extremum characteristics of airfoil aerodynamic shape optimization design space is helpful for people to choose a reasonable optimization algorithm in the airfoil design stage, improve the optimization efficiency and shorten the ...
He Meng   +3 more
doaj   +1 more source

A novel shape optimization method using knot insertion algorithm in B-spline and its application to transonic airfoil design [PDF]

open access: yes, 2011
A new method using the cubic B-spline curves with nominal uniform knot set to parameterize the geometry is proposed to deal with shape optimization problems.
Xu, B.   +4 more
core   +1 more source

An experimental study of airfoil instability tonal noise with trailing edge serrations [PDF]

open access: yes, 2013
This paper presents an experimental study of the effect of trailing edge serrations on airfoil instability noise. Detailed aeroacoustic measurements are presented of the noise radiated by an NACA-0012 airfoil with trailing edge serrations in a low to ...
Joseph, PF, Chong, TP
core   +1 more source

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

Home - About - Disclaimer - Privacy