Menu

Discussion Forum

New Discussion
Filtrer

Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.

Using functions in geometry parameters

Posted 15 juin 2016, 08:47 UTC−4 Parameters, Variables, & Functions 1 Reply

Certified Consultant
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Hi, I have defined functions (either globally, or in component) which I then wanted to use in geometry parameters like position. Comsol sais 'unknown function or operator'. How can I do this? A simplified example is attached.
Thank you
Daniel
1 Reply Last Post 15 juin 2016, 10:26 UTC−4
Henrik Sönnerlind COMSOL Employee

Please login with a confirmed email address before reporting spam

Posted: 8 years ago 15 juin 2016, 10:26 UTC−4
Hi,

The geometry can only depend on parameters, not on functions. But parameters can be very general expressions of other parameters.

The difference between a parameter and a function is that the parameter is fixed within a certain study step, whereas a function can have any type of dependence on time, coordinates, results, etc. This is why it is not possible to let a function change the geometry.

Regards,
Henrik
Hi, The geometry can only depend on parameters, not on functions. But parameters can be very general expressions of other parameters. The difference between a parameter and a function is that the parameter is fixed within a certain study step, whereas a function can have any type of dependence on time, coordinates, results, etc. This is why it is not possible to let a function change the geometry. Regards, Henrik

Note that while COMSOL employees may participate in the discussion forum, COMSOL® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team.

Suggested Content