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Question: a highly viscous nonturbulent fluid fills the gap between two...

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A highly viscous (nonturbulent) fluid fills the gap between two long concentric cylinders of radii a and b > a, respectively. If the outer cylinder is fixed and the inner cylinder moves steadily at an axial velocity U, the fluid will move at the axial velocity Uİn(b / r) In(b a) See figure below for a definition of the velocity component v2. Sketch this velocity distribution between the cylinders and comment. Find expressions for the shear stresses at both the inner and outer cylinder surfaces and explain why they are different Typical point (r.e.) Typical infinitesimal element Base line dr dz de

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