The variation of the dynamic viscosity of water with absolute temperature is given as
T, K | μ, Pa • s |
273.15 | 1.787 × 10−3 |
278.15 | 1.519 ×10−3 |
283.15 | 1.307 × 10−3 |
293.15 | 1.002 × 10−3 |
303.15 | 7.975 × 10−4 |
313.15 | 6.529 × 10−4 |
333.15 | 4.665 × 10−4 |
353.15 | 3.547 × 10−4 |
373.15 | 2.828 × 10−4 |
Using tabulated data, develop a relation for viscosity in the form of μ = μ (T) = A + BT + CT2 + DT3 + ET4 Using the relation developed, predict the dynamic viscosity of water at 50°C at which the reported value is 5.468 × 10−4 Pa • s. Compare your result with the results of Andrade’s equation, which is given in the form of μ = D • eB/T, where D and B are constants whose values are to be determined using the viscosity data given.
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