The Buoyancy and Variable Viscosity Effects on a Water Laminar Boundary Layer along a Heated Longitudinal Horizontal Cylinder

The Buoyancy and Variable Viscosity Effects on a Water Laminar Boundary Layer along a Heated Longitudinal Horizontal Cylinder

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Small cross flow is induced in an otherwise axially symmetric laminar boundary layer when a uniform horizontal stream flows along the inner or outer surface of a heated horizontal cylinder. The magnitude of this cross flow depends on the ratio of the Grashof number to the square of the Reynolds number, based on the radius of the cylinder, and in its early stages grows linearly in the downstream direction.