Problem 2.64 - Problem 2.64 [Difficulty: 3] Given:...

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Problem 2.64 [Difficulty: 3] Given: Shock-free coupling assembly Find: Required viscosity Solution: Basic equation τ r θ μ du dr = Shear force F τ A = Torque TF R = Power PT ω = Assumptions: Newtonian fluid, linear velocity profile δ V 1 = ω 1 R V 2 = 2 ( R + δ ) τ r θ μ du dr = μ V r = μ ω 1 R ω 2 R δ + () δ = τ r θ μ ω 1 ω 2 R δ = Because δ << R Then ω 2 = FR ω 2 = τ A 2 R ω 2 = μω 1 ω 2 R δ 2 π R L R ω 2 = P 2 π μ ω 2 ω 1 ω 2 R 3 L δ = Hence μ P δ 2 π ω 2 ω 1 ω 2 R 3
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This note was uploaded on 10/19/2011 for the course EGN 3353C taught by Professor Lear during the Fall '07 term at University of Florida.

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