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International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.5

ISSN Druckformat: 2152-5102
ISSN Online: 2152-5110

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International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v27.i1.60
pages 62-81

Asymptotic Space-Time Properties of Laminar Boundary Layers above Curved Surfaces

Ye. I. Nikiforovich
Fluid Mechanics Institute Ukrainian Academy of Sciences, Kiev, Ukraine

ABSTRAKT

The effect of centrifugal forces on transient processes in laminar boundary layers and the time-space parameters of their two- and three-dimensional vortex structures are investigated. Radius of curvature R of the flow-washed surface is taken to be constant for simplicity and it is assumed that the Reynolds number ReR is high. Two- and three-dimensional equations of the boundary layer are obtained and scenari of its development in terms of space-time scales of vortex structures are proposed using methods of matching asymptotic expansions with a small parameter equal to the reciprocal of the Reynolds number. In particular, the space-time properties of two- and three-dimensional boundary layers are investigated as a function of the problem's governing parameters. The concept of susceptibility for this class of problems is formalized and validated.


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