Mesh problem in Starccm+ 9

jsb12136 · October 3, 2014, 09:34

I am new to this software, and I am trying to simulate the rotating motion of a vertical axis water turbine. After I set up the boundaries and regions, an error said"trimmer can not accommodate multiple regions in one continuum" shows up. What is the mistake of this?

mi_cfd · October 4, 2014, 18:12

Hi Xiaosong,

The Trimmer mesher in STAR-CCM+ can only mesh one region at a time and it does not create conformal mesh at the interface.

So, if you are using the Trimmer to mesh multiple regions, you have to enable "Per-region meshing" or "Per-part meshing" under:

- Continua > Mesh 1 > Models > Trimmer : Properties
(if you are using "region-based meshing")

or

- Geometry > Operations > Automatic Mesh 1 > Models > Trimmer : Properties
(if you are using "parts-based meshing")

There are some relevant tutorials in STAR-CCM+ documentation including several ones on meshing and one on a rotating fan, that you might find useful.

Regards,
MI

October 3, 2014, 09:34	Mesh problem in Starccm+ 9	#1
jsb12136 New Member Xiaosong Zhang Join Date: Oct 2014 Posts: 14 Rep Power: 12	I am new to this software, and I am trying to simulate the rotating motion of a vertical axis water turbine. After I set up the boundaries and regions, an error said"trimmer can not accommodate multiple regions in one continuum" shows up. What is the mistake of this?

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October 4, 2014, 18:12		#2
mi_cfd New Member Join Date: Apr 2009 Posts: 5 Rep Power: 17	Hi Xiaosong, The Trimmer mesher in STAR-CCM+ can only mesh one region at a time and it does not create conformal mesh at the interface. So, if you are using the Trimmer to mesh multiple regions, you have to enable "Per-region meshing" or "Per-part meshing" under: - Continua > Mesh 1 > Models > Trimmer : Properties (if you are using "region-based meshing") or - Geometry > Operations > Automatic Mesh 1 > Models > Trimmer : Properties (if you are using "parts-based meshing") There are some relevant tutorials in STAR-CCM+ documentation including several ones on meshing and one on a rotating fan, that you might find useful. Regards, MI