Engineering

Engineering, 28.09.2019 00:30, princessbreanna0

What is fluid? how does relate with shear and face ? what is the difference between sold and fluid ?

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Engineering, 14.09.2019 03:30, emilygoolsby2123

An experiment was set-up to measure an unknown fluid's viscosity. two flat plates are separated by a gap of 4.5 mm and move relative to each other at a velocity of 5 m/s. the space between them is occupied by the unknown viscosity. the motion of the plates is resisted by a shear stress of 10 pa due to the viscosity of the fluid. assuming that the velocity gradient of the fluid is constant, determine the coefficient of viscosity of the fluid.

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Physics, 18.09.2019 03:30, QUEEN2267

3. this problem deals with the shear stress-shear rate data below from a 6 wt% sodium cellulose sulfate polymer solution in water at 24.5°c: (a) make a plot of viscosity vs. shear rate. label all axes, including units. (b) identify a shear rate range, if any, over which the fluid displays newtonian behavior. (c) identify a shear rate range, if any, over which the fluid displays power law behavior. if so, determine the power law constants (k and n). (d) if this polymer solution is to be used in a process at a shear rate of 5,000 s–1 , estimate its viscosity under these conditions. do you think the estimated value is reliable? briefly explain why or why not.

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Engineering, 20.09.2019 20:20, Bloom247

The following shear stress-shear rate data were obtained on a 6 wt% solution of sodium cellulose sulfate polymer in water at 24.5 °c. shear rate (s) 0.23 shear stress (pa) shear rate (s) shear stress (pa) 5.5 5.8 52 0.29 7 7.2 57 0.36 8.5 9.1 63 0.46 11.5 11 69 0.58 13 14.5 74 0.72 15 18 80 0.91 17.5 23 85 15 20.5 29 92 1.45 24 36 100 108 1.8 27.5 46 2.3 31.5 58 113 20 2.9 36 72 3.6 41 91 130 4.6 46 log-log scale plot the viscosity-shear rate function on a a. b. is there a shear rate range in which the fluid appears to be newtonian? is there a range in which the viscosity follows a power law relation? if so determine the power law constants and state what type of non-newtonian fluid it is the polymer solution is to be used in a process at a shear rate of 5000 s. estimate the viscosity under these conditions from the available data. do you think that the estimated c. d. value is reliable?

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