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.

Adding space charge density as a function of the radius

Please login with a confirmed email address before reporting spam

Hello everyone, I need to add this formula for the space charge density:

where and with

Could you tell me how to do it please? In the figure I found where to write the formula of the space charge density, but I need to know how to write the spherical coordinate r.



2 Replies Last Post Oct 20, 2023, 3:43 a.m. EDT
Robert Koslover Certified Consultant

Please login with a confirmed email address before reporting spam

Posted: 6 months ago Oct 19, 2023, 7:42 p.m. EDT
Updated: 6 months ago Oct 19, 2023, 7:42 p.m. EDT

Simply express r in Cartesian coordinates. E.g., see https://en.wikipedia.org/wiki/Spherical_coordinate_system

-------------------
Scientific Applications & Research Associates (SARA) Inc.
www.comsol.com/partners-consultants/certified-consultants/sara
Simply express *r* in Cartesian coordinates. E.g., see https://en.wikipedia.org/wiki/Spherical_coordinate_system

Please login with a confirmed email address before reporting spam

Posted: 6 months ago Oct 20, 2023, 3:43 a.m. EDT

Thank you for your useful suggestion @RobertKoslover.

Thank you for your useful suggestion @RobertKoslover.

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.