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Implementation of a Method to Determine Aerodynamic Propeller-Wing Interaction Read chapter Read first chapter

2020 | OriginalPaper | Chapter

Boundary Layer Stability with Embedded Rotating Cylindrical Roughness Element

Authors : Yongxiang Wu, Ulrich Rist

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

Publisher: Springer International Publishing

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Abstract

Linear stability theory (LST) and direct numerical simulations (DNS) are used to investigate the instability of boundary layer flow with an embedded rotating cylindrical roughness element. The non-linear formulation of the perturbation evolution is implemented and solved with the second-order finite volume solver OpenFOAM, which is validated by comparison with LST prediction with respect to Tollmien-Schlichting waves. Dynamic mode decomposition (DMD) is then used to obtain the frequency separated disturbance modes. To obtain an insight into the instability mechanism, perturbation kinetic energy analysis is followed. Results reveal the possible stabilization effect of such a flow setup.

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Metadata
Title
Boundary Layer Stability with Embedded Rotating Cylindrical Roughness Element
Authors
Yongxiang Wu
Ulrich Rist
Copyright Year
2020
Book
New Results in Numerical and Experimental Fluid Mechanics XII

Print ISBN: 978-3-030-25252-6

Electronic ISBN: 978-3-030-25253-3

Copyright Year: 2020

DOI
https://doi.org/10.1007/978-3-030-25253-3_27

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