-
Filter by Topic
Release
Popular Topics
- List all discussions
LinkedIn
Facebook
Twitter
Delicious
Digg
Stumbleupon
More services...Coordinate system and COMSOL solver
|
Thread index | Previous thread | Next thread | Start a new discussion |
RSS feed |
Turn on email notifications |
1 Reply
Last post: January 11, 2013 11:55am UTC
January 10, 2013 2:22pm UTC
Coordinate system and COMSOL solver
Hi
This may sound silly but I need to understand the basics.
I am bit confused about how COMSOL handles coordinates. I have a circular geometry in 3D, preferably in theory it is usual to use a cylindrical coordinate system (r,theta,z). When I use comsol, the equation is generally expressed in cartesian coordinates. Does it matter to convert it to cylindrical coordinate? I guess comsol solver would eventually convert it back to x,y,z system.
For example, an equation is dependent on the stresses in x,y,z direction but the geometry is a circular. All the equations are in cartesian coordinate. Can some one please explain how comsol handles the equation in this case? I am using SM and heat trasnfer in solids together.
Reply | Reply with Quote | Send private message | Report Abuse
January 11, 2013 11:55am UTC in response to Ruzbeh
Re: Coordinate system and COMSOL solver
Hi
COMSOL calculates all in orthonormal carthesian, but you can define any other coordinate system and refer to the variables, i.e. a first cylindrical coordinate system would typically have its naming sys2.r .phi, .z ...
Note: postprocessing is also by default in carthesian normal system, so there too you need to remap to your given coordinates, depending on what you are looking for
--
Good luck
Ivar
Reply | Reply with Quote | Send private message | Report Abuse
Rules and guidelines
