Enabling off-design linearised aerodynamics analysis using Krylov subspace recycling technique

S Xu, S Timme, KJ Badcock - Computers & Fluids, 2016 - Elsevier
The major computational challenge, when using frequency domain linearised computational
fluid dynamics in the analysis of aeroelastic problems such as aircraft flutter, gust response …

Frequency-domain gust response simulation using computational fluid dynamics

P Bekemeyer, R Thormann, S Timme - AIAA Journal, 2017 - arc.aiaa.org
The numerical investigation of dynamic responses to atmospheric turbulence is an important
task during the aircraft design and certification process. Efficient methods are desirable …

Rapid gust response simulation of large civil aircraft using computational fluid dynamics

P Bekemeyer, R Thormann, S Timme - The Aeronautical Journal, 2017 - cambridge.org
Several critical load cases during the aircraft design process result from atmospheric
turbulence. Thus, rapidly performable and highly accurate dynamic response simulations …

[PDF][PDF] Krylov subspace recycling for linearised aerodynamics analysis using DLR-TAU

S Xu, S Timme, KJ Badcock - International Forum on Aeroelasticity …, 2015 - cfd4aircraft.com
The major computational challenge, when using frequency domain linearised computational
fluid dynamics in the analysis of aeroelastic problems such as aircraft flutter, gust response …

Nonlinear airfoil limit cycle analysis using continuation method and filtered impulse function

Q Yu, M Damodaran, BC Khoo - AIAA Journal, 2020 - arc.aiaa.org
In this study, an adaptive step size control algorithm incorporated in the continuation method
(CM) is developed and combined with the filtered impulse function method based on …

Quasi-steady doublet-lattice correction for aerodynamic gust response prediction in attached and separated transonic flow

D Friedewald, R Thormann, C Kaiser… - CEAS Aeronautical …, 2018 - Springer
A quasi-steady doublet-lattice correction method is used to predict aerodynamic gust
responses of two different configurations: a swept wing, the so-called Aerostabil wing, and a …

Time-Linearized Forced Response Analysis of a Counter Rotating Fan: Part I—Theoretical Concept of a Fully Time-Linear Forced Response Analysis

M Blocher… - … Expo: Power for …, 2014 - asmedigitalcollection.asme.org
From 2010 to 2013, several institutes of the German Aerospace Center investigated a
counter rotating fan arrangement called CRISP2. While having efficiency advantages over …

Efficient aerodynamic derivative calculation in three-dimensional transonic flow

R Thormann, S Timme - The Aeronautical Journal, 2017 - cambridge.org
One key task in computational aeroelasticity is to calculate frequency response functions of
aerodynamic coefficients due to structural excitation or external disturbance. Computational …

Linearised Frequency Domain Gust Analysis of Large Civil Aircraft

P Bekemeyer, R Thormann… - Proceedings of the VII …, 2016 - livrepository.liverpool.ac.uk
Predicting loads due to atmospheric turbulence is crucial in the aircraft design and
certification process. Efficient methods are important regarding the large number of …

Prediction of transonic flutter behavior of a supercritical airfoil using reduced order methods

NK Banavara, D Dimitrov - New Results in Numerical and Experimental …, 2014 - Springer
The flutter behavior of a supercritical airfoil is investigated using a panel formulation, which
solves the subsonic unsteady linearized small-disturbance integral equations. Linear …