Handling Symmetric Geometry

gandhipratik90 · January 20, 2015, 02:02

Hello,

I am modeling ESP. The model of my ESP is symmetric about vertical mid-plane.

Can you suggest me ideas to reduce the computational domain so as to save computational efforts and time ?

One idea is as the ESP is symmetric about vertical plane. . .can I divide it along that plane and solve the case? If YES then how to split the geom in STAR-CCM+ along a plane.

Do I need to give periodic BC across the symmetry plane?

Please respond to the query...hoping that I can save the computational time, efforts and memory...

me3840 · February 9, 2015, 02:15

If your model is symmetric you can create a simple block part and use a subtraction operation to get the part of the domain that's symmetric.

You don't need to give a periodic condition for a symmetry plane - you use a symmetry condition.

January 20, 2015, 02:02	Handling Symmetric Geometry	#1
gandhipratik90 New Member Pratik Gandhi Join Date: Nov 2014 Location: Chennai Posts: 3 Rep Power: 12	Hello, I am modeling ESP. The model of my ESP is symmetric about vertical mid-plane. Can you suggest me ideas to reduce the computational domain so as to save computational efforts and time ? One idea is as the ESP is symmetric about vertical plane. . .can I divide it along that plane and solve the case? If YES then how to split the geom in STAR-CCM+ along a plane. Do I need to give periodic BC across the symmetry plane? Please respond to the query...hoping that I can save the computational time, efforts and memory...

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February 9, 2015, 02:15		#2
me3840 Senior Member Join Date: Nov 2010 Location: USA Posts: 1,232 Rep Power: 25	If your model is symmetric you can create a simple block part and use a subtraction operation to get the part of the domain that's symmetric. You don't need to give a periodic condition for a symmetry plane - you use a symmetry condition.