Using ECFM-3Z for GDI combustion simulation

krsna100@gmail.com · October 3, 2016, 10:45

Hi,
How to use ECFM-3Z for GDI case running under stratified mode?
The manual mentions that the initialize.in, boundary.in a, species.in and Therm.dat have to be modified to include some model specific species. I dont find any example case of ECFM on your download page. Can someone please help?

xieshengbai · October 7, 2016, 18:01

Hi,

For GDI, ECFM3Z+ISSIM will be an option. We are working on GDI/PFI example cases right now which will take one or two months or so. At this moment, we can help you to setup the case if you are willing to send an inquiry to support@convergecfd.com. Thank you.

Quote:

Originally Posted by krsna100@gmail.com

Hi,
How to use ECFM-3Z for GDI case running under stratified mode?
The manual mentions that the initialize.in, boundary.in a, species.in and Therm.dat have to be modified to include some model specific species. I dont find any example case of ECFM on your download page. Can someone please help?

MFGT · November 28, 2016, 10:07

Quote:

Originally Posted by xieshengbai

Hi,

For GDI, ECFM3Z+ISSIM will be an option. We are working on GDI/PFI example cases right now which will take one or two months or so.

i am really looking forward to the ECFM examples. How do they come along?
And, does ECFM have restrictions regarding certain operation points? Like SAGE with the standard reaction mechanism, which is not suitable for low load operation points (e.g. idle, 2000-2bar BMEP)?

jhuang · November 29, 2016, 16:59

Based on our tests, ECFM works well for a wide range of operation points, as long as Ka is small. SAGE should work well as long as mechanism is validate for operating points.

MFGT · November 30, 2016, 03:26

Thanks for the update. I have a ECFM case ready to run, i will check the results and compare to SAGE.

But what do you mean by Ka?

jhuang · November 30, 2016, 10:46

Ka is Karlovitz number
http://www.cfd-online.com/Wiki/Karlovitz_number

learner1111 · February 19, 2017, 05:58

Like the other folks, I also look forward to applying the ecfm-3z model to my
project. But seems a tutorial setup is still not availabel in your download
area?

Thanks

dprobst · February 28, 2017, 13:29

We are working to release more examples soon, including ECFM and ECFM-3Z.
You can email support to get an example immediately.

Eleven Leo · January 23, 2018, 06:12

Quote:

Originally Posted by MFGT

Thanks for the update. I have a ECFM case ready to run, i will check the results and compare to SAGE.

But what do you mean by Ka?

Hi Tobias,

I am going to use ECFM, too. I also meet some problems, I want to refer to your case, could you please send me your case?
My email: yaopeng.li@energy.lth.se
Thank you very much for your help.

Best
Yaopeng

MFGT · January 24, 2018, 07:53

Hi Yaopeng,

i havent done anything with ECFM after that, so you better ask CSI directly.

Eleven Leo · January 24, 2018, 07:55

Quote:

Originally Posted by MFGT

Hi Yaopeng,

i havent done anything with ECFM after that, so you better ask CSI directly.

All right. I will contact them. Thank you.

Best

SamWijey · January 24, 2018, 10:13

Please send us an email at support@convergecfd.com and we will send you ECFM and ECFM-3Z example cases. They are currently not available through CONVERGE Studio but soon will be.

Eleven Leo · January 24, 2018, 10:36

Quote:

Originally Posted by SamWijey

Please send us an email at support@convergecfd.com and we will send you ECFM and ECFM-3Z example cases. They are currently not available through CONVERGE Studio but soon will be.

Hi, Sameera

Great, thank you.

Best

Eleven Leo · January 31, 2018, 10:00

Quote:

Originally Posted by SamWijey

Please send us an email at support@convergecfd.com and we will send you ECFM and ECFM-3Z example cases. They are currently not available through CONVERGE Studio but soon will be.

Hi, Sameera

Can ECFM be coupled with SAGE like G-equation? Do I need to add the SAGE by UDF?
Thank you very much for your answer.

Best regards,
Yaopeng

SamWijey · January 31, 2018, 10:11

Hi Yaopeng,

This is a feature that we are working on currently. It will be available in the future.

Thanks,

Sameera

Eleven Leo · January 31, 2018, 10:12

Quote:

Originally Posted by SamWijey

Hi Yaopeng,

This is a feature that we are working on currently. It will be available in the future.

Thanks,

Sameera

Hi Sameera,

All right, looking forward to that.

Best wishes,
Yaopeng

October 3, 2016, 10:45	Using ECFM-3Z for GDI combustion simulation	#1
krsna100@gmail.com New Member Join Date: Oct 2016 Posts: 1 Rep Power: 0	Hi, How to use ECFM-3Z for GDI case running under stratified mode? The manual mentions that the initialize.in, boundary.in a, species.in and Therm.dat have to be modified to include some model specific species. I dont find any example case of ECFM on your download page. Can someone please help?

November 29, 2016, 16:59		#4
jhuang New Member Jing Huang Join Date: Dec 2015 Location: Convergent Science, Madison WI Posts: 23 Rep Power: 11	Based on our tests, ECFM works well for a wide range of operation points, as long as Ka is small. SAGE should work well as long as mechanism is validate for operating points. __________________ Jing Huang Research Engineer CONVERGECFD

November 30, 2016, 10:46		#6
jhuang New Member Jing Huang Join Date: Dec 2015 Location: Convergent Science, Madison WI Posts: 23 Rep Power: 11	Ka is Karlovitz number http://www.cfd-online.com/Wiki/Karlovitz_number __________________ Jing Huang Research Engineer CONVERGECFD

February 28, 2017, 13:29		#8
dprobst Member Dan Probst Join Date: Jan 2016 Location: Convergent Science, Madison WI Posts: 38 Rep Power: 11	We are working to release more examples soon, including ECFM and ECFM-3Z. You can email support to get an example immediately. __________________ Dan Probst Principal Engineer CONVERGECFD

January 24, 2018, 10:13		#12
SamWijey Senior Member Sameera Wijeyakulasuriya Join Date: Jan 2016 Location: Convergent Science, Madison WI Posts: 119 Rep Power: 11	Please send us an email at support@convergecfd.com and we will send you ECFM and ECFM-3Z example cases. They are currently not available through CONVERGE Studio but soon will be. __________________ Sameera Wijeyakulasuriya Project Manager, Applications Team Lead - IC Engines Application Owner - Gas Turbines and Burners CONVERGECFD

November 30, 2016, 03:26		#5
MFGT Senior Member Tobias Join Date: May 2016 Location: Germany Posts: 326 Rep Power: 12	Thanks for the update. I have a ECFM case ready to run, i will check the results and compare to SAGE. But what do you mean by Ka?

February 19, 2017, 05:58		#7
learner1111 New Member Join Date: Feb 2017 Posts: 5 Rep Power: 10	Like the other folks, I also look forward to applying the ecfm-3z model to my project. But seems a tutorial setup is still not availabel in your download area? Thanks

January 24, 2018, 07:53		#10
MFGT Senior Member Tobias Join Date: May 2016 Location: Germany Posts: 326 Rep Power: 12	Hi Yaopeng, i havent done anything with ECFM after that, so you better ask CSI directly.

January 31, 2018, 10:11		#15
SamWijey Senior Member Sameera Wijeyakulasuriya Join Date: Jan 2016 Location: Convergent Science, Madison WI Posts: 119 Rep Power: 11	Hi Yaopeng, This is a feature that we are working on currently. It will be available in the future. Thanks, Sameera __________________ Sameera Wijeyakulasuriya Project Manager, Applications Team Lead - IC Engines Application Owner - Gas Turbines and Burners CONVERGECFD

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