CFD Online Logo CFD Online URL
Home > Forums > Siemens

Transient flow convergence problems

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

LinkBack Thread Tools Display Modes
Old   March 20, 2007, 07:17
Default Transient flow convergence problems
Syed Mohammed Qamar Hasnain
Posts: n/a

My name is Mohammed Hasnain, and I trying to model blood flow through the iliac bifurcation. This geometry involves having one inlet and two pressure outlets. I modelling blood flow as being transient, entering in a velocity input at the inlet in table form where V is dependant upon time. One cycle is approximately 1 second and I am running the flow for 5 seconds. The problem is that my residual converge after 1 second, but velocity plots only appear at 5 seconds. The input velocity are in the order of 10^-1 m/s. I have even tried a variable time step that is governed by the average courant number which I have set between 10 and 100. Please can someone help me. Thank you.

Regards, Mohammed Hasnain
  Reply With Quote


Thread Tools
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 On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Convergence Problems Internal Flow Haroon Junaidi FLUENT 2 January 30, 2008 08:40
Convergence problems in multiphase flow! Mikael FLUENT 6 December 13, 2007 16:11
Multiphase flow convergence problems Nick CFX 1 July 12, 2007 21:18
Transient Flow, Transient Pressure in Work Bench Erich CFX 1 May 8, 2007 11:55
Convergence Problems in multi-phase buoyant flow Miguel CFX 0 September 1, 2006 15:02

All times are GMT -4. The time now is 05:20.