CFD Online Logo CFD Online URL
Home > Forums > Main CFD Forum

Mesh & pde's it can support

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Display Modes
Old   February 25, 2007, 07:55
Default Mesh & pde's it can support
Posts: n/a
I'm looking for information relating mesh types, element order, element shape against various pde types.

Essentially, what level of physical phenomena can a particular mesh arrangement support - without requiring local mesh optimisation - ie. a uniform mesh.

Links & references would be gratefully appreciated. Thanks so much.

  Reply With Quote

Old   February 27, 2007, 22:27
Default Re: Mesh & pde's it can support
Posts: n/a
No takers?

I'll kick off with a simple cos() function requiring at least a P6 (28 node triangle) to capture the first 4 terms of the cos() Taylor expansion & to capture a full cycle.

To get around this obvious limitation, using lower order finite elements, we can cut the cos() form into pieces. The more we cut, the smaller the element size required for lower-order element interpolation functions. This ends up in an ever-increasing demand for elements, the lower the level of element used.

Has anyone worked with alternative element interpolation functions eg. exp, cos, sin, cosh etc?

  Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
how to set periodic boundary conditions Ganesh FLUENT 13 January 22, 2014 05:11
Mesh motion with Translation & Rotation Doginal CFX 2 January 12, 2014 07:21
2D Mesh Generation Tutorial for GMSH aeroslacker Open Source Meshers: Gmsh, Netgen, CGNS, ... 12 January 19, 2012 04:52
basic of mesh refinement arya CFX 4 June 19, 2007 12:21
How to control Minximum mesh space? hung FLUENT 7 April 18, 2005 09:38

All times are GMT -4. The time now is 14:20.