Interruption by signal HUP (1)

Ravikiran · February 14, 2010, 05:05

Hi,

I am working on a fluid-solid thermal analysis project.

Brief: A big cylinder ( 20 m length and .5 m dia ) with around 900 inlets and 2 outlets. Supersaturated Steam of diff temps and mass flow rates enter through various inlets and mixes in the stomach of cylinder, comes out through 2 outlets.

Aim is to get a temperature distribution in fluid and sold material.

I have used ICEM CFD to mesh then exported it to CFX. Defined Boundary conditions as required. When i give run, i encounter an error msg as follows:

** MXLOOP TOO SMALL
** Error concerns TT data for .PROLOGUE:
STOP called from routine PROCESS_OBJECT

F:\Program Files\ANSYS Inc\v120\CFX\bin\winnt-amd64\cclsetup.exe
was interrupted by signal HUP (1)

PS: I attach output file too for reference.

Please help me out of this. ( I am a newbie in CFD )

Thank you.

ghorrocks · February 14, 2010, 06:28

I am guessing here but I suspect you may have run into a limitation in the amount of CCL it can load. Does it work fine if you do the same simulation with only half (or a quarter) of the number of inlets? If that works then I think you have hit a CCL limitation.

If this is the case then your only option is to group inlets together with the same conditions into reduce the number of inlets. If this is not possible you should talk to CFX support.

Ravikiran · February 14, 2010, 09:52

Yes Ghorrocks,

It worked fine with half and lesser number of inlet boundary conditions. But now i cant group inlets together.

Any way of expanding CCL limitation? Or any other solution?

Thank you.

ghorrocks · February 14, 2010, 18:33

In that case your only option is to talk to CFX support.

joey2007 · February 15, 2010, 17:16

beyond the command line options of cfx5solve there is one named -sizeccl factor or similar. It may help. Please give feed back ....

Ravikiran · February 16, 2010, 02:46

Hi joey,

Tried changing size factor. No use

ghorrocks · February 16, 2010, 18:33

Have you talked to CFX Support yet?

Ravikiran · February 17, 2010, 02:07

Hi Ghorrocks,

I have mailed my query to ansysinfo@ansys.com

No reply yet. Do you have any other contact info of Ansys-CFX support?

Thank you.

ghorrocks · February 17, 2010, 08:02

I think that email address is the sales address. If you have a paid-up tech support contract you will have been given an email/phone number to access CFX support. If not, well this is why you buy tech support.

Siva_aero · February 17, 2010, 11:32

cfdsup-india@ansys.com

Ravikiran · February 22, 2010, 01:42

Hey ghorrocks,

I got a reply and a call from cfx support. They say there is a limit on educational version.

So i have grouped inlets in to fewer numbers , as you suggested, and could get the temperature distribution for both the domains.

I have a doubt here, when i define a boundary condition and select some 3 inlet faces for it. Will the inlet mass flow rate given to this boundary condition gets divided among these inlets or will it remain the same for all the three inlets?

And can you please guide me how to export this temperatures to ansys structural and apply as loads i.e, instructions on export, import,etc..

If there are any specific tutorial for this, tell me where can i find them.

Thank you very much in advance.

Ravi kiran.

February 14, 2010, 09:52	!!	#3
Ravikiran New Member ravi kiran Join Date: Dec 2009 Location: Chennai- India Posts: 7 Rep Power: 17	Yes Ghorrocks, It worked fine with half and lesser number of inlet boundary conditions. But now i cant group inlets together. Any way of expanding CCL limitation? Or any other solution? Thank you.

February 16, 2010, 02:46	-sizeccl	#6
Ravikiran New Member ravi kiran Join Date: Dec 2009 Location: Chennai- India Posts: 7 Rep Power: 17	Hi joey, Tried changing size factor. No use

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February 14, 2010, 06:28		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,872 Rep Power: 144	I am guessing here but I suspect you may have run into a limitation in the amount of CCL it can load. Does it work fine if you do the same simulation with only half (or a quarter) of the number of inlets? If that works then I think you have hit a CCL limitation. If this is the case then your only option is to group inlets together with the same conditions into reduce the number of inlets. If this is not possible you should talk to CFX support.

February 14, 2010, 18:33		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,872 Rep Power: 144	In that case your only option is to talk to CFX support.

February 15, 2010, 17:16		#5
joey2007 Senior Member Join Date: Mar 2009 Location: Europe Posts: 169 Rep Power: 17	beyond the command line options of cfx5solve there is one named -sizeccl factor or similar. It may help. Please give feed back ....

February 16, 2010, 18:33		#7
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,872 Rep Power: 144	Have you talked to CFX Support yet?

February 17, 2010, 02:07		#8
Ravikiran New Member ravi kiran Join Date: Dec 2009 Location: Chennai- India Posts: 7 Rep Power: 17	Hi Ghorrocks, I have mailed my query to ansysinfo@ansys.com No reply yet. Do you have any other contact info of Ansys-CFX support? Thank you.

February 17, 2010, 08:02		#9
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,872 Rep Power: 144	I think that email address is the sales address. If you have a paid-up tech support contract you will have been given an email/phone number to access CFX support. If not, well this is why you buy tech support.

February 17, 2010, 11:32		#10
Siva_aero New Member Join Date: Mar 2009 Posts: 7 Rep Power: 17	cfdsup-india@ansys.com

February 22, 2010, 01:42	hi	#11
Ravikiran New Member ravi kiran Join Date: Dec 2009 Location: Chennai- India Posts: 7 Rep Power: 17	Hey ghorrocks, I got a reply and a call from cfx support. They say there is a limit on educational version. So i have grouped inlets in to fewer numbers , as you suggested, and could get the temperature distribution for both the domains. I have a doubt here, when i define a boundary condition and select some 3 inlet faces for it. Will the inlet mass flow rate given to this boundary condition gets divided among these inlets or will it remain the same for all the three inlets? And can you please guide me how to export this temperatures to ansys structural and apply as loads i.e, instructions on export, import,etc.. If there are any specific tutorial for this, tell me where can i find them. Thank you very much in advance. Ravi kiran.