|May 7, 2014, 08:46||
Problem keeping unstructured domain on database
Join Date: May 2014
Posts: 1Rep Power: 0
I am attempting to create an unstructured surface domain for an iced airfoil. I imported a *.stp file that has ~500,000 triangular elements. When I build the domain on the database, most (~80%?) of the resulting triangles are directly on the domain, as you would expect. The remaining triangles go "through" the database, and link to other vertices on the domain.
I've attached a picture. The triangles in question tend to form along the boundaries of the domain.
Here are some steps I've taken, and what I've observed:
1) Enforcing a max angle (5-10) doesn't help, but does increase the number of triangles.
2) Enforcing a max deviation (0.001-0.04) doesn't help, but does increase the number of triangles.
3) Pointwise appears to ignore the max/min edge length. When I put them as ~1.0 the maximum edge length in the domain ends up to be ~33 (!!) and the minimum edge length is ~1e-3.
4) Delaunay triangulation is much more robust in keeping triangles on the database than advancing fronts.
Any advice/tips would be greatly appreciated.
|May 8, 2014, 08:30||
Join Date: Mar 2009
Location: Ottawa, ON, CAN
Posts: 398Rep Power: 14
|database, domain, pointwise, unstructured, wtf|
|Thread||Thread Starter||Forum||Replies||Last Post|
|Domain Imbalance||HMR||CFX||5||October 10, 2016 05:57|
|simpleFoam - Convergence problem - Simple rectangular prism domain||HakikiCanakkaleli||OpenFOAM Running, Solving & CFD||5||May 9, 2013 04:59|
|structured and unstructured grids||user||Main CFD Forum||6||November 25, 2010 02:14|
|unstructured vs. structured grids||Frank Muldoon||Main CFD Forum||1||January 5, 1999 11:09|
|Public domain unstructured mesh generator||Fabien Coppens||Main CFD Forum||1||October 15, 1998 12:33|