Linear instability of orthogonal compressible leading-edge boundary layer flow

Gennaro, Elmer and Rodríguez Álvarez, Daniel and Medeiros, M. and Theofilis, Vassilios (2011). Linear instability of orthogonal compressible leading-edge boundary layer flow. In: "6th AIAA Theoretical Fluid Mechanics Conference", 27/06/2011 - 30/06/2011, Honolulu, Hawaii, USA. ISBN 978-1-62410-144-1. pp..

Description

Title: Linear instability of orthogonal compressible leading-edge boundary layer flow
Author/s:
  • Gennaro, Elmer
  • Rodríguez Álvarez, Daniel
  • Medeiros, M.
  • Theofilis, Vassilios
Item Type: Presentation at Congress or Conference (Article)
Event Title: 6th AIAA Theoretical Fluid Mechanics Conference
Event Dates: 27/06/2011 - 30/06/2011
Event Location: Honolulu, Hawaii, USA
Title of Book: Proceedings of 6th AIAA Theoretical Fluid Mechanics Conference
Date: 2011
ISBN: 978-1-62410-144-1
Subjects:
Faculty: E.T.S.I. Aeronáuticos (UPM)
Department: Motopropulsión y Termofluidodinámica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Instability analysis of compressible orthogonal swept leading-edge boundary layer flow was performed in the context of BiGlobal linear theory. 1, 2 An algorithm was developed exploiting the sparsity characteristics of the matrix discretizing the PDE-based eigenvalue problem. This allowed use of the MUMPS sparse linear algebra package 3 to obtain a direct solution of the linear systems associated with the Arnoldi iteration. The developed algorithm was then applied to efficiently analyze the effect of compressibility on the stability of the swept leading-edge boundary layer and obtain neutral curves of this flow as a function of the Mach number in the range 0 ≤ Ma ≤ 1. The present numerical results fully confirmed the asymptotic theory results of Theofilis et al. 4 Up to the maximum Mach number value studied, it was found that an increase of this parameter reduces the critical Reynolds number and the range of the unstable spanwise wavenumbers.

More information

Item ID: 13080
DC Identifier: http://oa.upm.es/13080/
OAI Identifier: oai:oa.upm.es:13080
Official URL: http://arc.aiaa.org/doi/book/10.2514/MTFC11
Deposited by: Memoria Investigacion
Deposited on: 04 Dec 2012 09:58
Last Modified: 21 Apr 2016 12:23
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