 |
École polytechnique Open archive |  |
 |
Conference papers
Global Stability Analysis of Compressible Leading-Edge Flow on a Swept Wing
Abstract : The global hydrodynamic stability of compressible leading-edge flow on a swept wing is addressed using Krylov-based iterative methods in conjunction with direct numerical simulations (DNS). Such a global hydrodynamic stability solver enables the analysis of complex fluid behavior by extracting global stability information directly from numerical simulations. Applying the DNS-based stability approach, unstable boundary-layer modes of the crossflow type and amplified as well as weakly-damped acoustic modes have been computed for a supersonic flow configuration. A parameter study reveals that, depending on the spanwise disturbance wavenumber β, boundary-layer modes or acoustic modes represent the dominant instability mechanism for the investigated parameter choices. Furthermore, the results of the present work clearly demonstrate the necessity of a global stability analysis to comprehensively understand the stability of swept leading-edge flow.
Cited literature [7 references]
https://hal-polytechnique.archives-ouvertes.fr/hal-01058601
Contributor : Denis Roura <>
Submitted on : Wednesday, August 27, 2014 - 1:36:47 PM
Last modification on : Wednesday, October 14, 2020 - 4:07:44 AM
Long-term archiving on: : Friday, November 28, 2014 - 10:26:42 AM
Contributor : Denis Roura <>
Submitted on : Wednesday, August 27, 2014 - 1:36:47 PM
Last modification on : Wednesday, October 14, 2020 - 4:07:44 AM
Long-term archiving on: : Friday, November 28, 2014 - 10:26:42 AM
File
Global_Stability_vol_1-18.pdf
Publisher files allowed on an open archive