Search found 5 matches

by tsprentall
Thu Mar 04, 2010 11:23 pm
Forum: Flow calculators and fluid flow problems
Topic: pressure drop with few knowns
Replies: 2
Views: 9244

Re: pressure drop with few knowns

This link will get you your roughness factor;

http://www.engineeringtoolbox.com/major ... d_459.html

Viscosity and density of diesel exhaust at 550-600F may be hard to find. Try soliciting one of the manufacturers like Cummins or Detriot Allison.
by tsprentall
Thu Mar 04, 2010 1:56 pm
Forum: Flow calculators and fluid flow problems
Topic: oxygen @ 50 psi flow rate
Replies: 3
Views: 15531

Re: oxygen @ 50 psi flow rate

I have never come accross the compressible flow formula and mine actually used the wrong differential by 14.7 PSI (discharging from gage pressure to atmosphere...duh!)! Placing the correct value in my version yields about 283 SCFM. I'm going to work through the other using pipe k=0.04 and x=1.4. I'l...
by tsprentall
Wed Mar 03, 2010 6:45 pm
Forum: Flow calculators and fluid flow problems
Topic: purpose
Replies: 3
Views: 9709

Re: purpose

Yeah, I just helped oxygendoc with a theoretical flow problem. Darcy Weisbach would have been perfect but in its absence....
by tsprentall
Wed Mar 03, 2010 6:17 pm
Forum: Flow calculators and fluid flow problems
Topic: oxygen @ 50 psi flow rate
Replies: 3
Views: 15531

Re: oxygen @ 50 psi flow rate

The maximum theoretical exit velocity can be calculated by writing the energy equation using a pressure differential (delta p) of 64.7 PSIA (assume constant source), zero frictional head losses in the pipe and zero elevation change. Manipulate the equation to solve for v2 and assume v1 = 0. The actu...
by tsprentall
Wed Mar 03, 2010 2:36 pm
Forum: Flow calculators and fluid flow problems
Topic: purpose
Replies: 3
Views: 9709

purpose

I like the flow calculations available on the site but what is the purpose of this blog?