Topology estimate factor

FAKHREDDINE · January 22, 2020, 17:16

Dear CFD Community

I am running fan cooling system with 1.1M nodes/3.5M elements. Some of the physics setting are: fan rotating domain, shaft rotating wall, and wall temperature and wall heat flux. The inlet BC is 180kpa/106C with an opening outlet BC. Once I run the CFX solver I got a message saying that: The solver ran out of temporary space while building a linked list for a domain interface. Try setting the expert parameter "topology estimate factor" to a value greater than 1.0. Values higher than 1.2 should not be necessary.

I am sure that my solver has enough memory and cores to solve this model but I don’t know why I am getting this error. Could anyone suggest help please?

Thank you

Gert-Jan · January 23, 2020, 04:10

It has nothing to do with memory. It is the complexiity of the geometry/setup/whatsoever.
Did you try the expert parameter as suggested?

January 22, 2020, 17:16	Topology estimate factor	#1
FAKHREDDINE Member Yuva Join Date: Oct 2015 Location: Korea Rep of Posts: 33 Rep Power: 10	Dear CFD Community I am running fan cooling system with 1.1M nodes/3.5M elements. Some of the physics setting are: fan rotating domain, shaft rotating wall, and wall temperature and wall heat flux. The inlet BC is 180kpa/106C with an opening outlet BC. Once I run the CFX solver I got a message saying that: The solver ran out of temporary space while building a linked list for a domain interface. Try setting the expert parameter "topology estimate factor" to a value greater than 1.0. Values higher than 1.2 should not be necessary. I am sure that my solver has enough memory and cores to solve this model but I don’t know why I am getting this error. Could anyone suggest help please? Thank you

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January 23, 2020, 04:10		#2
Gert-Jan Senior Member Gert-Jan Join Date: Oct 2012 Location: Europe Posts: 1,835 Rep Power: 27	It has nothing to do with memory. It is the complexiity of the geometry/setup/whatsoever. Did you try the expert parameter as suggested?