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Two-Fluid Boundary Layer Stability

Sarma, G.S.R. and Özgen, S. and Degrez, G. (1998) Two-Fluid Boundary Layer Stability. Physics of Fluids, 10 (11), pp. 2746-2757.

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Abstract

The stability of a two-fluid boundary layer is investigated. A boundary layer shears a second fluid that is bounded by the wall and the shearing fluid. The eigenvalue problem governing the linear stability of the configuration is solved using an efficient shooting-search method. Besides the Tollmien-Schlichting mode found in the classical hydrodynamical stability theory an additional Yih-mode exists due to the two-fluid interface. The effects of viscosity and density stratifications, thickness of the bounded fluid, gravity, surface tension as well as the non-newtonian character of the lower fluid on the stability characteristics are determined, Also the mechanisms leading to instability for the two modes are reported. The results are compared with analytical, numerical and experimental results reported in the literature

Document Type:Article
Additional Information: LIDO-Berichtsjahr=1999,
Title:Two-Fluid Boundary Layer Stability
Authors:
AuthorsInstitution or Email of Authors
Sarma, G.S.R.UNSPECIFIED
Özgen, S.VKI
Degrez, G.VKI
Date:1998
Journal or Publication Title:Physics of Fluids
Refereed publication:Yes
In ISI Web of Science:Yes
Volume:10
Page Range:pp. 2746-2757
Status:Published
Keywords:Anti-/De-Icing Fluids, Non-Newtonian Fluids, Interfacial Instability, Boundary Layer Flow
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W RP - Raumtransport
DLR - Research area:Space
DLR - Program:W RP - Raumtransport
DLR - Research theme (Project):UNSPECIFIED
Location: Köln-Porz , Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Institut für Strömungsmechanik
Deposited By: elib DLR-Beauftragter
Deposited On:16 Sep 2005
Last Modified:14 Jan 2010 20:28

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