[ICEM] How can I set the edge parameters so that they override the part mesh setup?

Josh · April 13, 2010, 19:28

Hi all -

I've managed to create a structured mesh over a blade-to-blade turbine cascade region, shown below. However, I cannot seem to specify the domain as two-dimensional. I use Blocking > Pre-Mesh Params > Edge Params and specify the z-directional edges as two nodes in width (for two-dimensionality).

However, even when I do, I end up with three nodes, as shown in the second picture.

I know this is because the Mesh > Part Mesh Setup is interfering with the results for the following reason. Right now, my max size for all the parameters is 5 mm. However, when I change it to 10 mm, the z-directional edges have only two nodes, like I specified!

I know I could avoid using the Part Mesh Setup, but I need it as I want an inflated boundary layer on the turbine blades.

Is there anyway to use both and still have a two-node (i.e. two-dimensional) thickness?

PSYMN · April 16, 2010, 14:33

Hexa blocking is a separate layer... It should only check the parameters you set on the geometry when you first ask it to update the sizes... After that, interactively set edge parameters rule... However, if you go back and "Update Sizes" again, it will go and check the geometry and reset the sizes on the edges... Is that what is happening?

You should only use the "Update Sizes" if you want it to replace all your edge params... Actually, there are options so it can just update the counts or the distribution if you don't want a complete update...

Simon

April 13, 2010, 19:28	How can I set the edge parameters so that they override the part mesh setup?	#1
Josh Senior Member Joshua Counsil Join Date: Jul 2009 Location: Halifax, Nova Scotia, Canada Posts: 366 Rep Power: 18	Hi all - I've managed to create a structured mesh over a blade-to-blade turbine cascade region, shown below. However, I cannot seem to specify the domain as two-dimensional. I use Blocking > Pre-Mesh Params > Edge Params and specify the z-directional edges as two nodes in width (for two-dimensionality). However, even when I do, I end up with three nodes, as shown in the second picture. I know this is because the Mesh > Part Mesh Setup is interfering with the results for the following reason. Right now, my max size for all the parameters is 5 mm. However, when I change it to 10 mm, the z-directional edges have only two nodes, like I specified! I know I could avoid using the Part Mesh Setup, but I need it as I want an inflated boundary layer on the turbine blades. Is there anyway to use both and still have a two-node (i.e. two-dimensional) thickness?

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
[snappyHexMesh] SnappyHexMesh for internal Flow	vishwa	OpenFOAM Meshing & Mesh Conversion	24	June 27, 2016 09:54
[ICEM] Unstructure Meshing Around Imported Plot3D Structured Mesh ICEM	kawamatt2	ANSYS Meshing & Geometry	17	December 20, 2011 12:45
2d irregular grid	Remy	Main CFD Forum	1	December 22, 2008 05:49
Structured mesh of a 3d sharp trailing edge	Gilles	Main CFD Forum	2	May 23, 2008 14:23
Set a set of circular initial conditions on a mesh	jinwon park	Main CFD Forum	0	January 26, 2008 12:10

April 16, 2010, 14:33		#2
PSYMN Senior Member Simon Pereira Join Date: Mar 2009 Location: Ann Arbor, MI Posts: 2,663 Blog Entries: 1 Rep Power: 47	Hexa blocking is a separate layer... It should only check the parameters you set on the geometry when you first ask it to update the sizes... After that, interactively set edge parameters rule... However, if you go back and "Update Sizes" again, it will go and check the geometry and reset the sizes on the edges... Is that what is happening? You should only use the "Update Sizes" if you want it to replace all your edge params... Actually, there are options so it can just update the counts or the distribution if you don't want a complete update... Simon