Incompressible viscous fluid flows in a thin spherical shell

Details Incompressible viscous fluid flows in a thin spherical shell Incompressible viscous fluid flows in a thin spherical shell

2006-07-20

arxiv.org/abs/math/0607506v1

Mathematics

Classical Analysis and ODEs

28 pages, 10 figures

Scientific paper

10.1007/s00021-007-0248-8

Linearized stability of incompressible viscous fluid flows in a thin spherical shell is studied by using the two-dimensional Navier--Stokes equations on a sphere. The stationary flow on the sphere has two singularities (a sink and a source) at the North and South poles of the sphere. We prove analytically for the linearized Navier--Stokes equations that the stationary flow is asymptotically stable. When the spherical layer is truncated between two symmetrical rings, we study eigenvalues of the linearized equations numerically by using power series solutions and show that the stationary flow remains asymptotically stable for all Reynolds numbers.

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