[ICEM] Icem 2d mesh over airfoil & cfx

sandy_1982 · June 1, 2014, 10:28

i have created a good quality (>0.3) 2d mesh over an airfoil in icem by making use of curve and surface controls

then i saved it as .msh file and opened it in CFX keeping the 'advanced options' on extruded it 1mm along the cell thickness direction

given the BC's and then run the CFX solver ...but what i found in that it fails to start
showing "floating point excpetion/ zero division" error

then second time i enabled the "double precision" option in the solution manager and found that the solution is running fine

my question is :

what are the causes of such a error and how to prevent it ?
(i had just enabled "double precision" as a hit and trial approach )

Far · June 2, 2014, 05:00

it is may be due to high aspect ratio!

mojtaba12 · June 2, 2014, 06:01

Hi Far,

i have attached my pictures did you see it ?, i could mesh it by blocks but the geomety is very complex when i open it after converting by fluent solver in icem, fluent can open the mesh file but it said there are many problems in your mesh file, could you please help me. can i send you the tetin files to see where the problem is

June 1, 2014, 10:28	Icem 2d mesh over airfoil & cfx	#1
sandy_1982 Member Sandeep Join Date: Oct 2012 Location: India Posts: 51 Rep Power: 14	i have created a good quality (>0.3) 2d mesh over an airfoil in icem by making use of curve and surface controls then i saved it as .msh file and opened it in CFX keeping the 'advanced options' on extruded it 1mm along the cell thickness direction given the BC's and then run the CFX solver ...but what i found in that it fails to start showing "floating point excpetion/ zero division" error then second time i enabled the "double precision" option in the solution manager and found that the solution is running fine my question is : what are the causes of such a error and how to prevent it ? (i had just enabled "double precision" as a hit and trial approach )

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June 2, 2014, 05:00		#2
Far Senior Member Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,558 Blog Entries: 6 Rep Power: 54	it is may be due to high aspect ratio!

June 2, 2014, 06:01		#3
mojtaba12 New Member Germany Join Date: May 2014 Posts: 4 Rep Power: 12	Hi Far, i have attached my pictures did you see it ?, i could mesh it by blocks but the geomety is very complex when i open it after converting by fluent solver in icem, fluent can open the mesh file but it said there are many problems in your mesh file, could you please help me. can i send you the tetin files to see where the problem is