Finding a temperature

8
0
Hi,
I am doing a problem and I need to find the reynolds number for a pipe which only contains water going from a river to cool water basin. I know the initial temperature is 10 degrees C and the final is 15 degrees C, so can I just take an average temperature and use that to find the viscosity and density or is it more complicated than that?

Thanks!
 
19,350
3,838
Hi,
I am doing a problem and I need to find the reynolds number for a pipe which only contains water going from a river to cool water basin. I know the initial temperature is 10 degrees C and the final is 15 degrees C, so can I just take an average temperature and use that to find the viscosity and density or is it more complicated than that?

Thanks!
For that small a temperature variation, using the average is fine, particularly if the flow is turbulent.
 

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