(b) Velocity measurements in sea water are given in Table Q2. Seawater kinematic viscosity and density...
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(b) Velocity measurements in sea water are given in Table Q2. Seawater kinematic viscosity and density for typical conditions are 1.05x10 m/s and 1025 kg/m3, respectively. Parameter Distance from the bed, z (m) Mean velocity, U (m/s) Point 1 Point 2 Point 3 1.5 1.92 3.5 5.5 2.17 2.08 Table Q2 Assuming the data represent a logarithmic layer over a hydraulically fully rough seabed with unknown sand grain size diameter, find: (i) the shear velocity and bed shear stress, [12 marks] (ii) the size of a sand grain. [5 marks] (b) Velocity measurements in sea water are given in Table Q2. Seawater kinematic viscosity and density for typical conditions are 1.05x10 m/s and 1025 kg/m3, respectively. Parameter Distance from the bed, z (m) Mean velocity, U (m/s) Point 1 Point 2 Point 3 1.5 1.92 3.5 5.5 2.17 2.08 Table Q2 Assuming the data represent a logarithmic layer over a hydraulically fully rough seabed with unknown sand grain size diameter, find: (i) the shear velocity and bed shear stress, [12 marks] (ii) the size of a sand grain. [5 marks]
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Managing Controlling and Improving Quality
ISBN: 978-0471697916
1st edition
Authors: Douglas C. Montgomery, Cheryl L. Jennings, Michele E. Pfund
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