Fluent Error: Cortex received a fatal signal (unrecognized signal)

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yk2359 posted this 2 weeks ago

Hello,

Case 1: I added parameters to my models. One for inlet b/c & other 'out-pres' for total pressure at the outlet is created as area-weighted-avg from surface integral of report def. I am to use this output parameter in MATLAB for post-processing instead of a report.

The output parameter is created after initializing the model. When I hit calculate, fluent threw an error  'Error: Cortex received a fatal signal (unrecognized signal). Error Object: ()' and 'CX1810' window popped up as shown in image1 below.Image1

 

Case2: Output parameter is deleted. Now I run the simulation, there was an error and successful calculation as shown in below Images.

Image2

Image3

 

Please help me understand this. Thank you.

Best,

Yogesh

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vganore posted this 2 weeks ago

Hi Yogesh, can you please share your project file achieve to investigate?

Vishal Ganore, ansys.com/student

yk2359 posted this 6 days ago


Attached Files

vganore posted this 5 days ago

I did not get any such error. 

Here is what you can do:

1.  Go to Workbench, clear generated data from Solution. Reset solution. Then your project will look like this.

 

Vishal Ganore, ansys.com/student

vganore posted this 5 days ago

2. Go to setup, open Fluent, initialise the case 

3. Under results, go to reports, setup surface integral of pressure outlet and then hit save output parameter. Close Fluent.

Vishal Ganore, ansys.com/student

vganore posted this 5 days ago

4. Come back to Workbench, open parameter set and input parameter values (velocity) for which you wish to calculate pressure outlet values. 

5. Update all design points to get. values. Table will look like this. Note that same pressure values at outlet are reported for different velocities. Because 100 number of iterations are not sufficient to make any difference to the values.

Vishal Ganore, ansys.com/student

yk2359 posted this 3 days ago

Hello Vishal,

Thank you for your response. I didn't quite understand point #5. Do I need to increase the number of iterations to develop the flow? Or change any parameters?

Please clarify. Thank you.

 

Yogesh

vganore posted this 3 days ago

During your first run before setting up parameters, start with 1000 iterations and observe residuals. If they converge below their limits, solution will automatically stop iterating. If residuals do not converge, then you need to increase the number of iterations further. 

Vishal Ganore, ansys.com/student

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