Irregular mesh

stonescar · February 1, 2013, 07:37

Hi,
I am very new to CFD and I am trying to just make a domain and generate waves in this domain. So when I try to make a mesh, it looks kind of weird.
Why does spots with higher density of cells occur at random places, as seen in attached picture.

I guess there's a simple setting or something I haven't checked.

Sorry for a very newbie question.

Sam0508 · February 7, 2013, 01:55

Quote:

Originally Posted by stonescar

Hi,
I am very new to CFD and I am trying to just make a domain and generate waves in this domain. So when I try to make a mesh, it looks kind of weird.
Why does spots with higher density of cells occur at random places, as seen in attached picture.

I guess there's a simple setting or something I haven't checked.

Sorry for a very newbie question.

-----------------------------------------------------------------------
Can you check the surface growth rate? ref below

Regards,
Sam0508

lava12005 · February 12, 2013, 05:57

Hmm before going to the volume mesh, can you show us the surface mesh /intial surface of the domain? (make sure the mesh if on to be seen)
I suspect there is something not righ even with the surface mesh / initial surface

mmntmflx · February 27, 2013, 03:02

You can try to check these values,

* Surface curvature (reduce the default value - this put more less points around the circle)
* Surface size (increase the cell size - increase the minimum triangle size)

and can you show geometry screen?

i think geometry have some circular feature edges on the extensive areas like a point,
and i think some close proximity detail in extensive meshed line..

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February 12, 2013, 05:57		#3
lava12005 Senior Member KHB Join Date: Aug 2010 Location: Singapore Posts: 118 Rep Power: 15	Hmm before going to the volume mesh, can you show us the surface mesh /intial surface of the domain? (make sure the mesh if on to be seen) I suspect there is something not righ even with the surface mesh / initial surface

February 27, 2013, 03:02		#4
mmntmflx Member Melih Meriç Join Date: Apr 2011 Posts: 46 Rep Power: 14	You can try to check these values, * Surface curvature (reduce the default value - this put more less points around the circle) * Surface size (increase the cell size - increase the minimum triangle size) and can you show geometry screen? i think geometry have some circular feature edges on the extensive areas like a point, and i think some close proximity detail in extensive meshed line..