[GAMBIT] mesh not alligned with edge ?

jdfortune · February 7, 2011, 04:40

Hi,
The problem I am facing is that when i mesh the edge, the node does not follow exactly the edge line (not alligned). This creates negative volume when i mesh the face =(.

Picture is attached with this post.

I would appreciate it if any expert is willing to help =)

-mAx- · February 8, 2011, 01:40

your exact line, is the one with the nodes.
Indeed you describe your edge with more "resolution" than your topology line, which is a "simple" representation.
I think your problem may come from your Aspect Ratio, you have very streteched cells (near walls)

jdfortune · February 8, 2011, 08:02

thanks Max, muxh appreciated =).

So do you suppose that i shorten the length or increase the height ? or both?

-mAx- · February 8, 2011, 08:09

I assume your first cell height (in the BL) is given because of y+, so you only have the possibility to add more nodes along your edge.

February 8, 2011, 01:40		#2
-mAx- Super Moderator Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 3,297 Rep Power: 41	your exact line, is the one with the nodes. Indeed you describe your edge with more "resolution" than your topology line, which is a "simple" representation. I think your problem may come from your Aspect Ratio, you have very streteched cells (near walls) __________________ In memory of my friend Hervé: CFD engineer & freerider Last edited by -mAx-; February 8, 2011 at 08:06.

February 8, 2011, 08:09		#4
-mAx- Super Moderator Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 3,297 Rep Power: 41	I assume your first cell height (in the BL) is given because of y+, so you only have the possibility to add more nodes along your edge. __________________ In memory of my friend Hervé: CFD engineer & freerider

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February 8, 2011, 08:02		#3
jdfortune New Member jason fortune Join Date: Jan 2011 Posts: 4 Rep Power: 15	thanks Max, muxh appreciated =). So do you suppose that i shorten the length or increase the height ? or both?