CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Running, Solving & CFD

Compressible Flow using buoyantSimpleFoam

Register Blogs Community New Posts Updated Threads Search

 
 
LinkBack Thread Tools Search this Thread Display Modes
Prev Previous Post   Next Post Next
Old   April 17, 2012, 02:21
Default Compressible Flow using buoyantSimpleFoam
  #1
Member
 
Klio
Join Date: Mar 2012
Location: Austria
Posts: 45
Rep Power: 14
klio is on a distinguished road
HI @ all!

I want to simulate a simple compressiple pipe flow with given pressure and higher tempreture at the inlet using kEpsilon Model with buoyantSimpleFoam.

How do I set BC at p_rgh, when pressure inlet goes in z-direction!

p = p_rgh + rho*g*z

In my case it would be p-rgh = 0.5 - 1.225*-9.81*0.1 --> 0.701

But if i set up the BC of p_rgh with 0.7 it either crashes (when p is 0 but 0.5 at inlet) or it p_rho dosen't converge (when p is 1e-5 but 0.5 at inlet)!
Attached Files
File Type: zip pipe_comp.zip (10.1 KB, 66 views)
klio is offline   Reply With Quote

 


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Compressible flow, no data at the outlet mireis FLUENT 6 September 3, 2015 02:10
Natural Convection using Compressible Flow (chtMultiRegionFOAM) msarkar OpenFOAM 2 September 7, 2010 00:13
help with compressible flow BC's (need subsonic flow) meangreen Main CFD Forum 5 July 24, 2010 13:16
Compressible Fluid Flow in COMSOL Multiphysics BBG COMSOL 1 November 19, 2008 14:05
Solving unsteady compressible low speed flow atit Main CFD Forum 8 July 31, 2000 13:19


All times are GMT -4. The time now is 05:48.