Learning Forum

[Devank12]

Can one explain me how to find out the friction coefficient in flow through pipe using ansys fluent???

[Raef.Kobeissi]

Find Delta P ( Pressure inlet - Pressure outlet) and then formulate an expression in Fluent to calculate fd. 

Regards

[atulsingh92]

A question here.

v should be velocity magnitude, but how to obtain rho?

Should this be from the reference value? or should be made a report first and then added to this expression?

[Amine Ben Hadj Ali]

That is the fluid density. Its is available as post processing variable under properties.

[atulsingh92]

Another spin off

If the diameter (also L) is in mm (5 mm , for example)

1) Should I mesh/scale 0.01 0.01 0.01 and then give 5 in the formula?

or

2) I do mesh/scale 0.01 0.01 0.01 and then give 0.005 in the formula?

 

I pretty much need to do a meshscale 0.01 0.01 0.01 because every import from spaceclaim tends to not have my own dimensions.

[Amine Ben Hadj Ali]

You give the length of your geometry along the mean stream . Check every time the scale size dimensions in Fluent.