Effect of streamwise surface undulations on the nonlinear stability of crossflow instabilities

Research output: Contribution to conferencePaperpeer-review

16 Downloads (Pure)

Abstract

The nonlinear stability of three-dimensional boundary layers over various undulated surfaces was calculated using the generalized Nonlinear Parabolized Stability Equations (NPSE). The results are compared with a flat plate configuration to assess the effect of the undulation shape on the stability of the boundary layer. It was found that the effect of surface undulations is significant and should not be ignored when performing stability analysis. All undulation shapes considered in this work showed a destabilization of the primary mode and the associated harmonics. The stability of the boundary layer was directly affected by the amplitude of the undulations, while their respective shape did not meaningfully affect the evolution of the crossflow instabilities within the parameter range considered in this work.

Original languageEnglish
Number of pages6
Publication statusPublished - 2022
Event12th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2022 - Osaka, Virtual, Japan
Duration: 19 Jul 202222 Jul 2022

Conference

Conference12th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2022
Country/TerritoryJapan
CityOsaka, Virtual
Period19/07/2222/07/22

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Fingerprint

Dive into the research topics of 'Effect of streamwise surface undulations on the nonlinear stability of crossflow instabilities'. Together they form a unique fingerprint.

Cite this