Problem 2.54

# Problem 2.54 - Problem 2.54[Difficulty 3 Given Data on...

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Problem 2.54 [Difficulty: 3] Given: Data on annular tube Find: Whether no-slip is satisfied; location of zeroshear stress; viscous forces Solution: The velocity profile is u z r () 1 4 μ p L R i 2 r 2 R o 2 R i 2 ln R i R o ln r Ri = Check the no-slip condition. When rR o = u z R o 1 4 μ p L R i 2 R o 2 R o 2 R i 2 ln R i R o ln R o Ri = u z R o 1 4 μ p L R i 2 R o 2 R o 2 R i 2 + = 0 = When i = u z R i 1 4 μ p L R i 2 R i 2 R o 2 R i 2 ln R i R o ln R i R i = 0 = The no-slip condition is satisfied. The given data is R i 5mm = R o 25 mm = p 125 kPa = L2 m = The viscosity of the honey is μ 5 Ns m 2 =

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Problem 2.54 - Problem 2.54[Difficulty 3 Given Data on...

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