CHT simulation running

joescor2 · May 24, 2017, 03:48

Hi!,I'm a PhD student from the Universitat Politècnica de València, in Spain. My PhD thesis is about conjugate heat transfer. I started using the demo for practice and to know how converge works. I added an improvised piston and head on the demo case, with the piston there's no was any problem but when I set the head the simulation doesn't run. I have tried many things but the problem still continues, always give me an error like this:

ERROR: the surface has a non-interface triangle that is only connected to a single interface triangle -- this is not allowed. Please check out Boundary 1 and Boundary 2.

I hope you can help me.

Best Regards,
Johan E.

chaighodke · May 25, 2017, 11:34

Hi Johan,

Could you please let me know if your geometry is error free when you run the diagnose tool? In addition, you will have to make sure that there is no triangle intersection in each step. You may check this using View Options --> Animation --> Check Triangle Intersection. Could you please check and let me know.

Thanks!

joescor2 · May 25, 2017, 12:59

yes, I have checked with the diagnosis tool and I have used the check triangle intersection and there wasn't problem.

I told you before I was able to run the simulation only with the piston but the problem appears when I added the head or the liner. I have tried running the simulation but it has been impossible. It's still so rare because I'm using the demo case.

Do you have any ideas about this problem?

Best regards,

chaighodke · May 31, 2017, 16:37

Hello,

I suggest you should check all the boundaries thoroughly, in particular interface boundaries, to confirm their setup is correct. For example, make sure all the normals are pointing in the right direction for all the boundaries. Can you please check this and let me know.

joescor2 · June 2, 2017, 05:06

Hi! I checked the geometry and apparently everything is fine, but it always appears the same error. I don't know why?

SamWijey · June 5, 2017, 10:44

Can you email your case (all .in and .dat files) to support@convergecfd.com so that we can take a look at this case? Please use your official email for all correspondence with us.

Thank You,

May 24, 2017, 03:48	CHT simulation running	#1
joescor2 New Member Join Date: Dec 2016 Posts: 13 Rep Power: 9	Hi!,I'm a PhD student from the Universitat Politècnica de València, in Spain. My PhD thesis is about conjugate heat transfer. I started using the demo for practice and to know how converge works. I added an improvised piston and head on the demo case, with the piston there's no was any problem but when I set the head the simulation doesn't run. I have tried many things but the problem still continues, always give me an error like this: ERROR: the surface has a non-interface triangle that is only connected to a single interface triangle -- this is not allowed. Please check out Boundary 1 and Boundary 2. I hope you can help me. Best Regards, Johan E.

May 25, 2017, 11:34		#2
chaighodke New Member Chaitanya Ghodke Join Date: May 2017 Location: Convergent Science, Madison WI Posts: 29 Rep Power: 8	Hi Johan, Could you please let me know if your geometry is error free when you run the diagnose tool? In addition, you will have to make sure that there is no triangle intersection in each step. You may check this using View Options --> Animation --> Check Triangle Intersection. Could you please check and let me know. Thanks! __________________ --------------------------------------------- Chaitanya D. Ghodke, Ph.D. Senior Research engineer Convergent Science Inc. ---------------------------------------------

May 31, 2017, 16:37		#4
chaighodke New Member Chaitanya Ghodke Join Date: May 2017 Location: Convergent Science, Madison WI Posts: 29 Rep Power: 8	Hello, I suggest you should check all the boundaries thoroughly, in particular interface boundaries, to confirm their setup is correct. For example, make sure all the normals are pointing in the right direction for all the boundaries. Can you please check this and let me know. __________________ --------------------------------------------- Chaitanya D. Ghodke, Ph.D. Senior Research engineer Convergent Science Inc. ---------------------------------------------

June 5, 2017, 10:44		#6
SamWijey Senior Member Sameera Wijeyakulasuriya Join Date: Jan 2016 Location: Convergent Science, Madison WI Posts: 117 Rep Power: 10	Can you email your case (all .in and .dat files) to support@convergecfd.com so that we can take a look at this case? Please use your official email for all correspondence with us. Thank You, __________________ Sameera Wijeyakulasuriya Principal Engineer, Applications CONVERGECFD

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
How can I detect cavitation presence while the simulation is still running?	Stabum	CFX	5	May 18, 2015 18:38
Is anyone can help me with running simulation?	imnull	Main CFD Forum	1	November 28, 2011 16:23
Replacing mesh while running a simulation	akultane	CFX	1	November 15, 2009 13:46
Simplifaction of a CHT transient simulation	MichaelPage	CFX	2	November 2, 2009 08:55
What do you CFD guys do during a long simulation running?	bearcat	Main CFD Forum	5	July 23, 2009 08:08

May 25, 2017, 12:59		#3
joescor2 New Member Join Date: Dec 2016 Posts: 13 Rep Power: 9	yes, I have checked with the diagnosis tool and I have used the check triangle intersection and there wasn't problem. I told you before I was able to run the simulation only with the piston but the problem appears when I added the head or the liner. I have tried running the simulation but it has been impossible. It's still so rare because I'm using the demo case. Do you have any ideas about this problem? Best regards,

June 2, 2017, 05:06		#5
joescor2 New Member Join Date: Dec 2016 Posts: 13 Rep Power: 9	Hi! I checked the geometry and apparently everything is fine, but it always appears the same error. I don't know why?