|
[Sponsors] |
May 26, 2020, 16:34 |
analytic solution for flow in tube
|
#1 |
New Member
jeremy rutman
Join Date: May 2020
Posts: 1
Rep Power: 0 |
I have a pretty simple problem - air is forced into a tube of inner radius r at ground level, at speed V and pressure p1. The tube has an outlet at height h.
From bernoulli I have Let's say I know the air density at the inlet ,e.g. 1kg/m^3; can I determine the velocity,pressure, and density at the outlet ? It seems I need two more equations . I guess that in steady state there isnt any mass building up so that gives me which leaves me one equation shy , is there another I'm not thinking of? |
|
May 27, 2020, 08:31 |
|
#2 |
Senior Member
Lucky
Join Date: Apr 2011
Location: Orlando, FL USA
Posts: 5,737
Rep Power: 66 |
You need an equation of state for density.
|
|
May 27, 2020, 08:35 |
|
#3 |
Senior Member
Join Date: Jul 2009
Posts: 357
Rep Power: 19 |
You also don't have a continuity equation in your list. What you have is essentially energy and momentum.
|
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
MacCormack's solution of Shock tube problem | mathgra | Main CFD Forum | 6 | January 28, 2023 21:10 |
Convergence | Centurion2011 | FLUENT | 48 | June 14, 2022 23:29 |
analytic solution for conjugate heat transfer | skuznet | Main CFD Forum | 0 | December 25, 2013 13:37 |
Naca 0012 (compressible and inviscid) flow convergence problem | bipulsaha | FLUENT | 1 | July 6, 2011 07:51 |
Wall functions | Abhijit Tilak | Main CFD Forum | 6 | February 5, 1999 01:16 |