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2021 | OriginalPaper | Chapter

Assessment of the Disturbance Velocity Approach to Determine the Gust Impact on Airfoils in Transonic Flow

Authors : Jens Müller, Marco Hillebrand, Thorsten Lutz

Published in: New Results in Numerical and Experimental Fluid Mechanics XIII

Publisher: Springer International Publishing

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Abstract

Unsteady CFD simulations of vertical “1-cos” gusts interacting with the DLR-F15 airfoil at transonic flow conditions are analyzed. The scope of the work is to assess the applicability of the simplified Disturbance Velocity Approach (DVA) for gust simulation, which is implemented in the CFD code TAU. While the DVA covers the interaction of the gust with the airfoil, it neglects the effect of the airfoil and the flow around the airfoil on the gust. Simulations where the gust and all interactions are resolved within the flow field are used to evaluate the accuracy of the DVA. Gust wavelength and angle of attack are varied to ensure a reliable assessment of the DVA. Lift, pitching moment, and shock position can be accurately determined by the DVA. At higher angles of attack and a small gust wavelength, the DVA’s drag history shows deviations which should be taken into account. Overall, the DVA provides suitable results with respect to the resolved gust simulations.

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Metadata
Title
Assessment of the Disturbance Velocity Approach to Determine the Gust Impact on Airfoils in Transonic Flow
Authors
Jens Müller
Marco Hillebrand
Thorsten Lutz
Copyright Year
2021
DOI
https://doi.org/10.1007/978-3-030-79561-0_2

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