Micro-porosity

jk75 · April 23, 2010, 10:02

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

MuxaB · May 5, 2010, 00:03

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.

jk75 · May 6, 2010, 06:41

Hi,

I'm using version 9.4.1, running on linux 64bit.

jk75 · May 28, 2010, 04:28

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...

lenken · December 11, 2013, 09:00

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

April 23, 2010, 10:02	Micro-porosity	#1
jk75 New Member Johannes Köpf Join Date: May 2009 Location: Germany Posts: 29 Rep Power: 16	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

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May 5, 2010, 00:03		#2
MuxaB Senior Member michael barkhudarov Join Date: Mar 2009 Location: Sante Fe, New Mexico, USA Posts: 336 Rep Power: 18	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.

May 6, 2010, 06:41		#3
jk75 New Member Johannes Köpf Join Date: May 2009 Location: Germany Posts: 29 Rep Power: 16	Hi, I'm using version 9.4.1, running on linux 64bit.

May 28, 2010, 04:28		#4
jk75 New Member Johannes Köpf Join Date: May 2009 Location: Germany Posts: 29 Rep Power: 16	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...

December 11, 2013, 09:00		#5
lenken New Member lenkenwong Join Date: Dec 2013 Posts: 6 Rep Power: 12	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