Error understanding

imrannazir · June 5, 2011, 05:18

Hi. I am getting following error when my DPM model run after 20 flow iterations.
Can anyone help me to understand this error and how to avoid it.

Error:
FLUENT received fatal signal (STACK_OVERFLOW)
1. Note exact events leading to error.
2. Save case/data under new name.
3. Exit program and restart to continue.
4. Report error to your distributor.
Error Object: ()

Amir · June 5, 2011, 08:31

Hi,
Check whether you have enough memory in a location where you are running fluent or enough RAM memory.

imrannazir · June 5, 2011, 15:16

Thanx Amir for replying.

Currently Fluent is installed on C drive where 56 GB is free. I have 3 GB RAM. When i run my case then i noticed that my ram utilization does not go above 500 MB.

I have dual core process with 2.0 GHz each processor.

I m doing coal gasification modeling using finite rate modeling with DPM. Is there any problem with my case setup causing that STACK_OVERFLOW error?
At lower mesh size (less than 2000 cells) that problem is not there but then i m not getting converged solution till 50000 iterations.
Kindly give some suggestion.

Amir · June 5, 2011, 15:37

Hi,
I meant the location where your case and data files are in, not the installation path.

imrannazir · June 5, 2011, 23:21

Dear Sir Amir
My case and data files are in F drive where almost 40 GB is free.
Moreover i have tried to solve my problem at various other computers with different specifications but for this particular case same error appeared at all computers too. Further if i changed my case with Non-pre mixed model and DPM then there is no any issue and problem is converged.

I think there is some problem associated with DPM iterations to Reactions (i have set 9 hetro and homogeneous reactions).

Thanx for giving me time. Hope you will say more on my problem.
Regards

imrannazir · June 13, 2011, 10:08

Is there any one who can help me to get understand my problem.
I m getting Stack Overflow message. what that means.

June 5, 2011, 05:18	Error understanding	#1
imrannazir New Member Imran Join Date: Jun 2010 Posts: 10 Rep Power: 15	Hi. I am getting following error when my DPM model run after 20 flow iterations. Can anyone help me to understand this error and how to avoid it. Error: FLUENT received fatal signal (STACK_OVERFLOW) 1. Note exact events leading to error. 2. Save case/data under new name. 3. Exit program and restart to continue. 4. Report error to your distributor. Error Object: ()

June 5, 2011, 23:21	Thnx but still problem	#5
imrannazir New Member Imran Join Date: Jun 2010 Posts: 10 Rep Power: 15	Dear Sir Amir My case and data files are in F drive where almost 40 GB is free. Moreover i have tried to solve my problem at various other computers with different specifications but for this particular case same error appeared at all computers too. Further if i changed my case with Non-pre mixed model and DPM then there is no any issue and problem is converged. I think there is some problem associated with DPM iterations to Reactions (i have set 9 hetro and homogeneous reactions). Thanx for giving me time. Hope you will say more on my problem. Regards

June 13, 2011, 10:08	Help	#6
imrannazir New Member Imran Join Date: Jun 2010 Posts: 10 Rep Power: 15	Is there any one who can help me to get understand my problem. I m getting Stack Overflow message. what that means.

June 5, 2011, 08:31		#2
Amir Senior Member Amir Join Date: May 2009 Location: Montreal, QC Posts: 735 Blog Entries: 1 Rep Power: 22	Hi, Check whether you have enough memory in a location where you are running fluent or enough RAM memory.

June 5, 2011, 15:16		#3
imrannazir New Member Imran Join Date: Jun 2010 Posts: 10 Rep Power: 15	Thanx Amir for replying. Currently Fluent is installed on C drive where 56 GB is free. I have 3 GB RAM. When i run my case then i noticed that my ram utilization does not go above 500 MB. I have dual core process with 2.0 GHz each processor. I m doing coal gasification modeling using finite rate modeling with DPM. Is there any problem with my case setup causing that STACK_OVERFLOW error? At lower mesh size (less than 2000 cells) that problem is not there but then i m not getting converged solution till 50000 iterations. Kindly give some suggestion.

June 5, 2011, 15:37		#4
Amir Senior Member Amir Join Date: May 2009 Location: Montreal, QC Posts: 735 Blog Entries: 1 Rep Power: 22	Hi, I meant the location where your case and data files are in, not the installation path.