Open AccessAirfoil shape optimization based on Non Uniform Rational Bspline and optimization algorithm
Author(s) -
ZhengMing Sun,
Zengliang Li,
Menghao Fan
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/474/5/052075
Subject(s) - airfoil , optimization algorithm , shape optimization , computer science , mathematical optimization , algorithm , mathematics , engineering , aerospace engineering , structural engineering , finite element method
In this article, we propose an innovation method of airfoil shape optimization, on the premise of ensuring the fitting accuracy; try to improve the smoothness of the airfoil. Non Uniform Rational B-Spline and quadratic penalty function are employed to parametric modelling and smoothness optimization. The monotone curvature variation is used to design smooth curves and least squares method ensuring high fitting accuracy. This program has been tested for a standard NACA 2415 and S825 airfoil and optimized to improve its smoothness. The results of optimization examples show that this method has high efficiency and precision.