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haleybain6353
13.09.2019 •
Chemistry
Determine the transition length at the entrance to a 10 mm tube through which 100 percent glycerol at 60 c is flowing at a velocity of 0.5 m/s. the density of a glycerol is 1240 kg/m data: the dynamic viscosity is 0.0813 pa-s. a) 18.13 mm b) 50 mm c) 45.43 mm d) 38.13 mm
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Ответ:
Option (d) is the correct answer.
Explanation:
The given data is as follows.
Tube diameter d = 10 mm = 0.01 m
Velocity of glycerol, v = 0.5 m/s
Density of glycerol (
) = 1240 kg/m3
Dynamic viscosity of glycerol (
) = 0.0813 pa.s
Reynolds number (Re) =![\rho \times velocity \times \frac{density}{\mu}](/tpl/images/0230/1947/78868.png)
=![1240 \times 0.5 \times \frac{0.01}{0.0813}](/tpl/images/0230/1947/162b9.png)
= 76.26
Therefore, according to Reynolds number we can say that flow is laminar.
Lt =![0.05 \times Re \times d](/tpl/images/0230/1947/cc3b9.png)
=![0.05 \times 76.26 \times 0.01](/tpl/images/0230/1947/8f501.png)
=![0.03813 m](/tpl/images/0230/1947/eeff8.png)
As it is known that 1 m = 1000 mm. Hence, in 0.03813 m will be equal to![0.03813 m \times \frac{1000 mm}{1 m}](/tpl/images/0230/1947/9eda8.png)
= 38.13 mm
Thus, we can conclude that the transition length of glycerol is 38.13 mm.
Ответ:
synthesis
Explanation: