The Hydrodynamic Stability of Couette-Poiseuille-Porous Annular Flow
1972; ASM International; Volume: 39; Issue: 3 Linguagem: Inglês
10.1115/1.3422808
ISSN1528-9036
Autores Tópico(s)Nanofluid Flow and Heat Transfer
ResumoThe linear hydrodynamic stability of the flow through an annulus composed of two concentric porous circular cylinders with the outer cylinder moving is examined. Axisymmetric disturbances of the flow, which is produced by a longitudinal pressure gradient, a cross-flow and boundary motion, are examined using numerical methods producing neutral stability curves which show that the flow is stabilized by boundary motion even in the presence of a destabilizing crossflow. Two special cases, annular Couette flow and transverse flow through an annulus, are also investigated and are found to be stable for small disturbances.
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