Nonlinear description of transversal motion in a laminar boundary layer with streaks

Martín Bautista, Juan A. and Martel Escobar, Carlos (2012). Nonlinear description of transversal motion in a laminar boundary layer with streaks. In: "42nd AIAA Fluid Dynamics Conference", 25/06/2012 - 28/06/2012, Nueva Orleans, Louisiana, EEUU.. pp. 1-12. https://doi.org/10.2514/MFDC12.

Description

Title: Nonlinear description of transversal motion in a laminar boundary layer with streaks
Author/s:
  • Martín Bautista, Juan A.
  • Martel Escobar, Carlos
Item Type: Presentation at Congress or Conference (Article)
Event Title: 42nd AIAA Fluid Dynamics Conference
Event Dates: 25/06/2012 - 28/06/2012
Event Location: Nueva Orleans, Louisiana, EEUU.
Title of Book: 42nd AIAA Fluid Dynamics Conference and Exhibit
Date: 27 June 2012
Subjects:
Faculty: E.T.S.I. Aeronáuticos (UPM)
Department: Fundamentos Matemáticos de la Tecnología Aeronáutica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The nonlinear streamwise growth of a spanwise periodic array of steady streaks in a flat plate boundary layer is numerically computed using the well known Reduced Navier- Stokes formulation. It is found that the flow configuration changes substantially when the amplitude of the streaks grows and the nonlinear effects come into play. The transversal motion (in the wall normal-spanwise plane), which is normally not considered, becomes non-negligible in the nonlinear regime, and it strongly distorts the streamwise velocity profiles, which end up being quite different from those predicted by the linear theory. We analyze in detail the resulting flow patterns for the nonlinearly saturated streaks, and compare them with available experimental results.

More information

Item ID: 19227
DC Identifier: http://oa.upm.es/19227/
OAI Identifier: oai:oa.upm.es:19227
DOI: 10.2514/MFDC12
Official URL: http://arc.aiaa.org/doi/abs/10.2514/6.2012-3272
Deposited by: Memoria Investigacion
Deposited on: 12 Jun 2014 16:34
Last Modified: 21 Apr 2016 17:28
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