CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > FLOW-3D

Micro-porosity

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

Reply
 
LinkBack Thread Tools Display Modes
Old   April 23, 2010, 10:02
Default Micro-porosity
  #1
New Member
 
Johannes Köpf
Join Date: May 2009
Location: Germany
Posts: 29
Rep Power: 9
jk75 is on a distinguished road
Hi All,

I have a solidification simulation with dynamic shrinkage model and microporosity model activated. Shrinkage seems to be ok, but the calculated Microporosity is about 1.E-10. Has someone experience with this combination?


Johannes
jk75 is offline   Reply With Quote

Old   May 5, 2010, 00:03
Default
  #2
Senior Member
 
michael barkhudarov
Join Date: Mar 2009
Posts: 332
Rep Power: 10
MuxaB is on a distinguished road
what version of FLOW-3D are you running? there was a problem like that, I think, in version 9.3, but has been fixed since then.
MuxaB is offline   Reply With Quote

Old   May 6, 2010, 06:41
Default
  #3
New Member
 
Johannes Köpf
Join Date: May 2009
Location: Germany
Posts: 29
Rep Power: 9
jk75 is on a distinguished road
Hi,

I'm using version 9.4.1, running on linux 64bit.
jk75 is offline   Reply With Quote

Old   May 28, 2010, 04:28
Default
  #4
New Member
 
Johannes Köpf
Join Date: May 2009
Location: Germany
Posts: 29
Rep Power: 9
jk75 is on a distinguished road
We have verfied the microporosity issue now with different setups. It's now clear that the micro- porosity is only calculated correctly (in combination with the solving of the momentum equations) when shrinkage is deactivated. That's not good, because we would need dynamic shrinkage AND micro- porosity...
jk75 is offline   Reply With Quote

Old   December 11, 2013, 10:00
Default
  #5
New Member
 
lenkenwong
Join Date: Dec 2013
Posts: 6
Rep Power: 4
lenken is on a distinguished road
Hi Johannes,

I am Ken, studying in germany. I am currently writing my bachelor thesis with flow 3D 9.4.1 as well. I am simulating solidification process. But I have some problems with the display. It doesn't show shrinkage on display and the temperature variation is illogical and the pressure variation doesn't change at all.

May I know what settings did you make for this solidification simulation?

I do not know where the problem is and i am using copper as my mould and pure iron as my fluid 1.

Thanks a lot first for ur attention and time.

best regards
Ken
lenken is offline   Reply With Quote

Reply

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
Porosity field in Fluent wojciech FLUENT 1 September 20, 2010 11:19
UDF for porosity cfd-novice FLUENT 2 August 20, 2009 03:19
Volume porosity as function of temperature Georg CFX 0 October 15, 2008 05:06
UDF for porosity Giacomo FLUENT 3 July 23, 2007 09:23
porous media with variable porosity Kevin A. FLUENT 3 December 24, 2006 11:56


All times are GMT -4. The time now is 23:06.