Path optimization of dual airfoils flapping in a biplane configuration with RSM in a parallel computing environment

Date

2011-01-01

Author

Kaya, Mustafa
Tuncer, İsmail Hakkı

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The path of dual airfoils in a biplane configuration undergoing a combined, non-sinusoidal pitching and plunging motion is optimized for maximum thrust and/or propulsive efficiency. The non-sinusoidal, periodic flapping motion is described using Non-Uniform Rational B-Splines (NURBS). The Response Surface Methodology (RSM) is employed for the optimization of NURBS parameters in a parallel computing environment. A gradient based optimization algorithm, steepest ascent method is started from the optimum point of response surfaces. Unsteady, low speed laminar flows are also computed in parallel using a Navier-Stokes solver based on domain decomposition. It is shown that the parallel optimization process with RSM suggests a quick and accurate initial guess for a gradient based optimization algorithm. © 2010 Springer.

Subject Keywords

Response surface methodology, Path optimization, Wall clock time, Steep ascent, Maximum thrust

URI

https://hdl.handle.net/11511/56401

DOI

https://doi.org/10.1007/978-3-642-14438-7_8

Collections

Department of Aerospace Engineering, Conference / Seminar

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Path optimization of flapping airfoils based on unsteady viscous flow solutions Kaya, Mustafa; Tuncer, İsmail Hakkı; Department of Aerospace Engineering (2008) The flapping path of a single airfoil and dual airfoils in a biplane configuration is optimized for maximum thrust and/or propulsive efficiency. Unsteady, low speed viscous flows are computed using a Navier-Stokes solver in a parallel computing environment. A gradient based algorithm and Response Surface Methodology (RSM) are employed for optimization. The evaluation of gradient vector components and the design of experiments for RSM, which require unsteady solutions, are also carried out in parallel. Paral...
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Optimization of Flapping Motion Parameters for Two Airfoils in a Biplane Configuration Kaya, Mustafa; Tuncer, İsmail Hakkı; Jones, Kevin D.; Platzer, Max F. (American Institute of Aeronautics and Astronautics (AIAA), 2009-03-01) Flapping motion parameters of airfoils in a biplane configuration are optimized for maximum thrust and/or propulsive efficiency. Unsteady, viscous flowfields over airfoils flapping in a combined plunge and pitch are computed with a parallel flow solver on moving and deforming overset grids. The amplitudes of the sinusoidal pitch and plunge motions and the phase shift between them are optimized for a range of flapping frequencies. A gradient-based optimization algorithm is implemented in a parallel computing...
Parallel optimization of flapping airfoils in a biplane configuration for maximum thrust Tuncer, İsmail Hakkı (2004-05-27) Flapping airfoils in a biplane configuration are optimized for a maximum thrust production. A parallel Navier-Stokes solver on overset grids and a gradient based parallel optimization method are employed. The periodic flapping motion of airfoils in a plane configuration is described in a combined pitch and plunge. The pitch and plunge amplitudes and the phase shift between them are optimized for a range of flapping frequencies. It is shown that at low flapping frequencies, flapping airfoils in a biplane con...

Citation Formats

M. Kaya and İ. H. Tuncer, “Path optimization of dual airfoils flapping in a biplane configuration with RSM in a parallel computing environment,” 2011, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/56401.