The relative error (0.027) is greater than the relative tolerance in Optimization Module

Please login with a confirmed email address before reporting spam

Dear community, I am running Optimization Module for the first time in order to maximize the current density in an Electromagnetic Study (ACDC module) of a coil detecting a defect over a metal cylinder; for now i am just changing the height of the coil ("altbob"). I have found message below, tried several changes in tolerance in Optimization Module but nothing changes. I appreciate any advice.

  • Parameters: "altbob","4.3" The following feature has encountered a problem:
    • Feature: Stationary Solver 2 (sol1/s2) Failed to find a solution. The relative error (0.027) is greater than the relative tolerance. There was a warning message from the linear solver. Iterative refinement triggered. Returned solution is not converged. Not all parameter steps returned.

Thanks in advance, Thiago


1 Reply Last Post 2024年8月19日 GMT+2 04:36
Robert Koslover Certified Consultant

Please login with a confirmed email address before reporting spam

Posted: 1 week ago 2024年8月19日 GMT+2 04:36

Although it is conceivable that someone here just might be able to guess the answer to your question without any additional information, I encourage you to post your .mph file to the forum, so that it can be reviewed by others here, and so that the problematic issue(s) in your particular model will be easier to identify.

-------------------
Scientific Applications & Research Associates (SARA) Inc.
www.comsol.com/partners-consultants/certified-consultants/sara
Although it is conceivable that someone here just might be able to guess the answer to your question without any additional information, I encourage you to post your .mph file to the forum, so that it can be reviewed by others here, and so that the problematic issue(s) in your particular model will be easier to identify.

Reply

Please read thediscussion forum rulesbefore posting.

Pleaselog into post a reply.

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

Baidu
map