Results 171 to 180 of about 21,879 (220)
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Nonsinusoidal Path Optimization of a Flapping Airfoil
AIAA Journal, 2007The path of a flapping airfoil undergoing a combined, nonsinusoidal pitching and plunging motion is optimized for maximum thrust and/or propulsive efficiency. The nonsinusoidal, periodic flapping motion is described using nonuniform rational B splines. A gradient based algorithm is then employed for the optimization of the nonuniform rational B-spline ...
TUNCER, İSMAİL HAKKI, Kaya, MUSTAFA
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Airfoil Design and Optimization
ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, 2001AbstractThe aerodynamic efficiency of mildly swept wings is mainly influenced by the characteristics of the airfoil sections. The specific design of airfoils is therefore one of the classical tasks of aerodynamics. Since the airfoil characteristics are directly dependent on the inviscid pressure distribution the application of inverse calculation ...
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Shape Optimization for Conforming Airfoils
44th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 2003Interest in the design and development of unmanned aerial vehicles (UAVs) has increased dramatically in the last two and a half decades. The Buckle-Wing UAV concept being developed in this research is designed to “morph” in a way which facilitates variations in wing loading, aspect ratio and wing section shapes.
Shawn Gano +3 more
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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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Supersonic airfoil optimization
Journal of Aircraft, 1986A procedure for the optimization of supersonic airfoils is presented. A nonlinear, full-potential solver (NCOREL) is coupled with a numerical optimizer (CONMIN). The NCOREL code is a three-dimensional supersonic marching method, however, only two-dimensional (conical) results are used for the airfoil problem.
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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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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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Optimal Control of a Vortex Trapped by an Airfoil with a Cavity
Flow, Turbulence and Combustion, 2000zbMATH Open Web Interface contents unavailable due to conflicting licenses.
IOLLO, ANGELO, ZANNETTI, LUCA
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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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