experiment 3 - Objective To determine the viscosity of three liquids using a Stormer Rotating Cylinder Viscometer The dynamic viscosity is calculated

experiment 3 - Objective To determine the viscosity of...

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Objective: To determine the viscosity of three liquids using a Stormer Rotating Cylinder Viscometer. The dynamic viscosity is calculated using the velocity gradient between two plates and making an approximation for a cylinder. b u dy du b r dy du 2 Results: M = 4.61 x 10 -2 kg a = 0.0287 m r 1 = 0.0319 m r 2 = 0.04781 m D = 0.007955 m L = 0.0145 m N (number of revolutions) t (s) (cP) ( g mL ) (cSt) Solution 1 94.5 14.11 4.15 x 10 -4 2.13 1.95 x 10 -4 Solution 2 91.5 11.05 3.35 x 10 -4 2.10 1.60 x 10 -4 Solution 3 93.5 16.11 4.79 x 10 -4 2.18 2.19 x 10 -4
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= N L D a g M 2 3 1 8 r Where: = dynamic viscosity (kg/m.s). M = mass of weight (kg). g = gravitational acceleration (9.81 2 s m ). a = radius of wound drum (m). D = (r 2 – r 1 ) that is the gap between the inner and outer cylinders (m). L = length of the inner cylinder submerged in solution (m).
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  • Winter '15
  • Huundoan
  • 2 kg, 4 M, 0.001kg, 9.81 m, 0.0145m

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