FLoating pint error

April 17, 2007, 08:49

I'm running a diffuser case with inlet mass flow and outlet pressure conditions and for some reason the solver exits with the error "Floating point exception : Overflow" I've tried running with a real low physical timescale but with no success. What could possibly be the problem. I thought it could be a High Mach number problem, but the solver gives no "High Mach number" warning as it normally does. Kindly help me out Thanks in advance Luke

April 17, 2007, 11:31

More info needed.

April 17, 2007, 23:30

This is the error that i get c_fpx_handler: Floating point exception: Overflow

The problem is a diffuser, with inlet mass flow BC and outlet static pressure BC. The analysis goes on with no problems regards to divergence or reverse flow, but at a certain point it exits with this error, with no warning whatsoever.

What could be the problem?

April 22, 2007, 08:46

CFX 11.0 64bit gives that. CFX 10.0 64bit does not. 11.0 possibly came out too early.

April 23, 2007, 07:33

I am using CFX 10.0 64 bit.....

April 24, 2007, 15:55

Refining mesh would be my way.

April 25, 2007, 05:00

If refining the mesh doesnt help. I would switch the outlet boundary condition to an opening and run for couple iterations before switching it back to outlet.

April 17, 2007, 08:49	FLoating pint error	#1
Luke Guest Posts: n/a	I'm running a diffuser case with inlet mass flow and outlet pressure conditions and for some reason the solver exits with the error "Floating point exception : Overflow" I've tried running with a real low physical timescale but with no success. What could possibly be the problem. I thought it could be a High Mach number problem, but the solver gives no "High Mach number" warning as it normally does. Kindly help me out Thanks in advance Luke

April 17, 2007, 11:31	Re: FLoating pint error	#2
Joe Guest Posts: n/a	More info needed.

April 17, 2007, 23:30	Re: FLoating pint error	#3
Luke Guest Posts: n/a	This is the error that i get c_fpx_handler: Floating point exception: Overflow The problem is a diffuser, with inlet mass flow BC and outlet static pressure BC. The analysis goes on with no problems regards to divergence or reverse flow, but at a certain point it exits with this error, with no warning whatsoever. What could be the problem?

April 22, 2007, 08:46	Re: FLoating pint error	#4
Your Name Guest Posts: n/a	CFX 11.0 64bit gives that. CFX 10.0 64bit does not. 11.0 possibly came out too early.

April 23, 2007, 07:33	Re: FLoating pint error	#5
Luke Guest Posts: n/a	I am using CFX 10.0 64 bit.....

April 24, 2007, 15:55	Re: FLoating pint error	#6
Your Name Guest Posts: n/a	Refining mesh would be my way.

April 25, 2007, 05:00	Re: FLoating pint error	#7
Prachi Guest Posts: n/a	If refining the mesh doesnt help. I would switch the outlet boundary condition to an opening and run for couple iterations before switching it back to outlet.

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