Results 181 to 190 of about 3,820 (224)
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Turbine Airfoil Design Optimization
Volume 1: Turbomachinery, 1996A new blade design methodology, which allows designers to react rapidly to changes in functional requirements of turbines and transition quickly from concept to design, has been discussed in this paper. This methodology reduces the design cycle time by creating a three-dimensional model of the blade, through concurrent design of multiple two ...
Sanjay Goel, John I. Cofer, Hardev Singh
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Learning-Guided Exploration in Airfoil Optimization
2013A learning-based exploration approach is proposed to escape from the basins of attraction of converged-to optima, by selecting on what is termed the interestingness of a solution. This interestingness is based on the modeling error made by a surrogate model that is trained on all solutions encountered earlier during the search.
Edgar Reehuis +3 more
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On the Optimal Control Method for Airfoil and Cascade Analysis
SIAM Journal on Scientific Computing, 1995Summary: In solving the full potential equation, the least-squares technique provides a robust and efficient approach. In this paper, this approach is investigated and a new algorithm is proposed. In particular, the upwind density technique is used instead and a very effective way of handling the circulation is proposed.
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Shape optimization of corrugated airfoils
Computational Mechanics, 2015zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Jain, Sambhav +2 more
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Multifidelity kinematic parameter optimization of a flapping airfoil
Physical Review E, 2020We construct a multifidelity framework for the kinematic parameter optimization of flapping airfoil. We employ multifidelity Gaussian process regression and Bayesian optimization to effectively synthesize the aerodynamic performance of the flapping airfoil with the kinematic parameters under multiresolution numerical simulations.
Hongyu Zheng +4 more
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Two-dimensional airfoil shape optimization for airfoils at low speeds
AIAA Modeling and Simulation Technologies Conference, 2012This paper presents a fast methodology for the design of two-dimensional low-speed airfoils. We propose a methodology in which the design process starts from an already known airfoil or from a new defined airfoil by imposing some basic geometrical characteristics, such as: the airfoil’s radius at the leading edge, the maximum height of the airfoil’s ...
Paul Silisteanu, Ruxandra Botez
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Optimization of airfoils for maximum lift
CASI/AIAA Subsonic Aero-and Hydro-Dynamics Meeting, 1969The pressure distribution which provides the maximum lift without separation for a monoelement airfoil in an incompressible flow is determined using existing boundary-layer theory and the calculus of variations. The airfoil profiles corresponding to these pressure distributions are determined using second-order airfoil theory.
ROBERT H. LIEBECK, ALLEN I. ORMSBEE
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Optimization of flatback airfoils for wind turbine blades
Aircraft Engineering and Aerospace Technology, 2010PurposeIn recent years, the airfoil sections with blunt trailing edge (called flatback airfoils) have been proposed for the inboard regions of large wind‐turbine blades because they provide several structural and aerodynamic performance advantages. The purpose of this paper is to optimize the shape of these airfoils for optimal performance using a ...
Xiaomin Chen, Ramesh Agarwal
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Airfoil Topology Optimization using Teaching-Learning based Optimization
International Journal of Applied Metaheuristic Computing, 2015This paper primarily deals with the optimization of airfoil topology using teaching-learning based optimization, a recently proposed heuristic technique, investigating performance in comparison to Genetic Algorithm and Particle Swarm Optimization. Airfoil parametrization and co-ordinate manipulations are accomplished using piecewise b-spline curves ...
Dushhyanth Rajaram +2 more
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Airfoil Optimization based on Isogeometric Discontinuous Galerkin
Proceedings of the 2018 2nd International Conference on Algorithms, Computing and Systems, 2018In this paper, an adjoint-based airfoil optimization algorithm is developed based on isogeometric discontinuous Galerkin (IDG) method for compressible Euler equations. We first parameterize the airfoil by B-spline curve approximation with some control points viewed as design variables, and build the B-spline representation of the flow field with the ...
Kun Wang 0054, Shengjiao Yu, Tiegang Liu
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