Reynolds & Velocity: Finding Mean & Max Velocities

[Libertiene]

Hi,

I have been given a couple of questions in which i have to draw a velocity profile in a pipe etc.

We are asked to find the mean & maximum velocitys, velocity pressure & pressure drop. the only 2 parameters we are given are the RE (Reynolds number) & pipe size. We are also told that the fluid is water. So thus we know the density & dynamic viscosity.

The only way i can see that i can find the velocity would be to transpose the formula for RE to get velocity (please correct me if I am wrong). But my question is, would this be the mean or maximum velocity? I have assumed mean, but if i am wrong i have stuffed the hole thing.

Regards

 

[stewartcs]

Hi,

I have been given a couple of questions in which i have to draw a velocity profile in a pipe etc.

We are asked to find the mean & maximum velocitys, velocity pressure & pressure drop. the only 2 parameters we are given are the RE (Reynolds number) & pipe size. We are also told that the fluid is water. So thus we know the density & dynamic viscosity.

The only way i can see that i can find the velocity would be to transpose the formula for RE to get velocity (please correct me if I am wrong). But my question is, would this be the mean or maximum velocity? I have assumed mean, but if i am wrong i have stuffed the hole thing.

Regards

The velocity used in the computation of the Reynold's number is indeed the mean velocity.

CS