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

calculate a nozzle flow using rhoCentralFoam

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   October 25, 2012, 22:26
Question calculate a nozzle flow using rhoCentralFoam
  #1
New Member
 
何刚
Join Date: Jan 2011
Posts: 25
Rep Power: 15
hg2lf is on a distinguished road
hello,foamers,
I'm trying to calculate a nozzle flow using rhoCentralFoam. We know that in the entry of a laval nozzle,the flow is subsonic,and speeded to supersonic at the exit.
I set the initial condition like this(I just calculate half of a nozzle):
inlet:fixedValue(p:1e5;T:1800;U:10);
outlet:T/U:zeroGradient;P:fixedValue:1000;
Wall:T/p:zeroGradient;U:fixedValue(0 0 0)
sym:symmetryPlane;

when I run rhoCentralFoam, ""maximum number of iterations exeeded" appear at the first time step.But if I chane the entry and the internal field of U to 1000m/s,the calculation could go on.
In fact, rhoCentralFoam could solve forwardstep flow,which is consisted of both subsonic and supersonic flow.
So,could someone give me some advice to solve the problem to calculate the laval nozzle flow?
Thanks a lot.

Last edited by hg2lf; October 25, 2012 at 22:27. Reason: error happens.
hg2lf is offline   Reply With Quote

Reply

Tags
laval nozzle, rhocntralfoam, subsonic/supersonic flow

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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
Review: Reversed flow CRT FLUENT 1 May 7, 2018 06:36
Flow does not go through nozzle??? nha1g08 ANSYS 6 May 6, 2011 22:13
How to calculate RPM from flow conditions Norton FLUENT 1 March 24, 2011 06:39
Nozzle flow simulation in inviscid and viscous Cath FLUENT 0 January 28, 2007 03:16
Inviscid Drag at subsonic, subcritical Mach # Axel Rohde Main CFD Forum 1 November 19, 2001 13:19


All times are GMT -4. The time now is 05:33.