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An incompressible Newtonian liquid is confined between two concentric cylinders of infinite length

An incompressible Newtonian liquid is confined between two concentric cylinders of infinite length—a solid inner cylinder of radius RA and a hollow outer cylinder of radius RB. The inner cylinder rotates at angular velocity ω and the outer cylinder is stationary. The flow is steady, laminar, and two-dimensional in the r-θ plane. The flow is rotationally symmetric, meaning that nothing is a function of the coordinate θ. The flow is also circular so that ur=0 everywhere.

Found Uθ= Ra^2w/(Ra^2-Rb^2)*(r-[Rb^2/r])

a. Derive an expression for the wall shear stress on the inner rotating cylinder.

RB RA RB RA

Apr 27 2020 View more View Less

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