[GiDlist] How to automatically detect the nodes on the bound

[V M Ngoc]

Hello everyone,

Can you show me how to distinguish automatically the nodes on the boundary with others ones in the case the 2D domain have any form.

Thank you in advance

Ngoc
Ecole des Ponts ParisTech
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[escolano]

The usual way is to mark with some condition the geometric entities of the part (e.g. inflow parts, loaded parts, depending on each simulataion), and then generate the mesh,
and the condition will be automatically applied on the mesh entities.

If do you want all boundary nodes you must separate them in your code:
Find all faces that appear only once (only belong to one element), and then select all its nodes without repetitions.

Iside GiD, graphically you can try to do this with
Mesh-View mesh bounday
and then for example send to another layer the nodes selecting them in screen (only nodes of the current visible boundary wil be selected)
----- Original Message -----
From: V M Ngoc
To: gidlist at listas.cimne.upc.edu
Sent: Tuesday, August 16, 2011 2:33 PM
Subject: [GiDlist] How to automatically detect the nodes on the boundary ofdomain 2D


Hello everyone,

Can you show me how to distinguish automatically the nodes on the boundary with others ones in the case the 2D domain have any form.

Thank you in advance

Ngoc
Ecole des Ponts ParisTech


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