samko95

Hi I want any information(document) about polymer shafts please.

Thank you for your reply. This formula is using to calculate the Hydraulic diameter, and D_h is not equal D_equ.

Hi everyone How to calculate the equivalent diameter of square and triangle? thanks

I did not understand what are you talking about, can you explain more please?

I am checked this data already, It is just give the final form without talk about the used way. Thank you for your attention

I agree with you, in addition to increase in area the turbulent must be increase due to large destruction in boundary layer by this conical perforation(I can't see the pic.)....

A.V.RamaniThat is interesting. Do perforations really increase HTC substantially? What happens to the pd at different velocities. I would have thought that if the area of perforation is a significant...

Thank you for your reply I've simulated finned tube heat exchanger with circular fin (sold fin and perforated fin with different perforation shapes). I've got all results (HTC,pressure drop at...

Which site can help please ?

Hi everyone How to correlate The average Nusselt number and find it's coefficients, on the other word how can I find the variables below(x,n,m) Nu= C* Re^n * Pr^m*(m/ms)^0.14 Some...