Need help with the following error:

vmlxb6 · August 9, 2010, 03:15

I am simulating a flow over a cylinder, to find the motion of the cylinder due to the vortex formation. After setting up the entire file in CFX_pre, i get the following error:

CFX_SOLVER_BASIC_MP_LIMIT does not exist in the ANSYSLI pool.

An error has occured in cfx5solve:

The ANSYS CFX solver could not be started, or excited with return code 255:
-No results file has been created.

ghorrocks · August 9, 2010, 06:28

Licensing problem. Talk to your IT people and find out what CFX licenses you have available.

vmlxb6 · August 9, 2010, 12:32

If the problem is the licence then why am I able to run the tutorial file correctly ????

ghorrocks · August 9, 2010, 18:43

Look like your license is node limited. Your model now exceeds the allowed number of nodes.

vmlxb6 · August 9, 2010, 19:13

Thanks a lot........I try with the IT dept.

vmlxb6 · August 9, 2010, 23:13

Hey Ghorrocks... thanx man !!!! It did work.....I re-meshed it but reduced the number of nodes just to check if it was node related problem....... and it did work.......

I reduced the mesh nodes from 72083 to 1941. The mesh quality is pathetic but still the problem is known now.

Regards,

Black Mamba

vmlxb6 · August 14, 2010, 14:19

@ Ghorrocks: I tried a variety of combinations and got the following results:

I tried running a dynamic mesh flow over a cylinder with 402036 elements and 72083 node and it failed to run.It gave error 255. I then reduced the number of nodes to 1941 and element to 9586 with the same mesh type and it gave results.
I thought it was the node specific license issue. SO just out of curiosity I meshed 4 different cases (for stationary cylinder) having the # of nodes to be 1900, 72000, 40200, 109565. These case have no UDF written with no dynamic mesh deformation., surprising all worked pretty fine ??? .

My question's are as follows:
1.) If the ANSYS license is node specific, then why did it work the second time (stationary cylinder case)???

2.) The tutorial which works just fine had a mesh with 18442 nodes. 2nd ,3rd and 4th cases have nodes greater than 18422 but still it worked ???

ghorrocks · August 15, 2010, 06:37

I don't know what the node count limit is. You will have to chase that you yourself.

Sounds like you are getting a different error with your error 255 run so you can't use that to establish the node count limit.

August 9, 2010, 03:15	Need help with the following error:	#1
vmlxb6 Senior Member Ugly Kid Joe Join Date: Aug 2010 Posts: 193 Rep Power: 15	I am simulating a flow over a cylinder, to find the motion of the cylinder due to the vortex formation. After setting up the entire file in CFX_pre, i get the following error: CFX_SOLVER_BASIC_MP_LIMIT does not exist in the ANSYSLI pool. An error has occured in cfx5solve: The ANSYS CFX solver could not be started, or excited with return code 255: -No results file has been created.

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August 9, 2010, 06:28		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,700 Rep Power: 143	Licensing problem. Talk to your IT people and find out what CFX licenses you have available.

August 9, 2010, 12:32		#3
vmlxb6 Senior Member Ugly Kid Joe Join Date: Aug 2010 Posts: 193 Rep Power: 15	If the problem is the licence then why am I able to run the tutorial file correctly ????

August 9, 2010, 18:43		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,700 Rep Power: 143	Look like your license is node limited. Your model now exceeds the allowed number of nodes.

August 9, 2010, 19:13		#5
vmlxb6 Senior Member Ugly Kid Joe Join Date: Aug 2010 Posts: 193 Rep Power: 15	Thanks a lot........I try with the IT dept.

August 9, 2010, 23:13		#6
vmlxb6 Senior Member Ugly Kid Joe Join Date: Aug 2010 Posts: 193 Rep Power: 15	Hey Ghorrocks... thanx man !!!! It did work.....I re-meshed it but reduced the number of nodes just to check if it was node related problem....... and it did work....... I reduced the mesh nodes from 72083 to 1941. The mesh quality is pathetic but still the problem is known now. Regards, Black Mamba

August 14, 2010, 14:19		#7
vmlxb6 Senior Member Ugly Kid Joe Join Date: Aug 2010 Posts: 193 Rep Power: 15	@ Ghorrocks: I tried a variety of combinations and got the following results: I tried running a dynamic mesh flow over a cylinder with 402036 elements and 72083 node and it failed to run.It gave error 255. I then reduced the number of nodes to 1941 and element to 9586 with the same mesh type and it gave results. I thought it was the node specific license issue. SO just out of curiosity I meshed 4 different cases (for stationary cylinder) having the # of nodes to be 1900, 72000, 40200, 109565. These case have no UDF written with no dynamic mesh deformation., surprising all worked pretty fine ??? . My question's are as follows: 1.) If the ANSYS license is node specific, then why did it work the second time (stationary cylinder case)??? 2.) The tutorial which works just fine had a mesh with 18442 nodes. 2nd ,3rd and 4th cases have nodes greater than 18422 but still it worked ???

August 15, 2010, 06:37		#8
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,700 Rep Power: 143	I don't know what the node count limit is. You will have to chase that you yourself. Sounds like you are getting a different error with your error 255 run so you can't use that to establish the node count limit.