The complex-step derivative approximation and its application to numerical algorithms are presented. Improvements to the basic method are suggested that further increase its …
J Fike, J Alonso - 49th AIAA aerospace sciences meeting including the …, 2011 - arc.aiaa.org
49th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition : The Development of Hyper-Dual N Page 1 The Development of Hyper-Dual …
E Livne - Journal of Aircraft, 2003 - arc.aiaa.org
Aeroelasticity is still dynamic, challenging, and a key part of cutting-edge airplane technology. Emerging trends, as well as challenges and needs in the eld of airplane …
J Martins, P Sturdza, J Alonso - 39th Aerospace Sciences Meeting and …, 2001 - arc.aiaa.org
This paper presents improvements to the complexstep derivative approximation method which increase its accuracy and robustness. These improvements unveil the connection to …
EJ Nielsen, MA Park - AIAA journal, 2006 - arc.aiaa.org
IN recent years a concerted effort has been made to bring higher fidelity, physics-based computational fluid dynamics (CFD) simulations into the aircraft design process. Such tools …
A new integrated aero-structural design method for aerospace vehicles is presented. The approach combines an aero-structural analysis solver, a coupled aero-structural adjoint …
W Yu, M Blair - Computer Physics Communications, 2013 - Elsevier
DNAD (dual number automatic differentiation) is a simple, general-purpose tool to automatically differentiate Fortran codes written in modern Fortran (F90/95/2003) or legacy …
KL Lai, JL Crassidis - Journal of Computational and Applied Mathematics, 2008 - Elsevier
A general framework for the first and second complex-step derivative approximation to compute numerical derivatives is presented. For first derivatives the complex-step approach …
AS Zymaris, DI Papadimitriou, KC Giannakoglou… - Journal of …, 2010 - Elsevier
The continuous adjoint method for the computation of sensitivity derivatives in aerodynamic optimization problems of steady incompressible flows, modeled through the k–ε turbulence …