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Solver questions regarding a COMSOL tutorial: "Pull-in of an RF MEMS Switch"
Posted Mar 23, 2018, 11:20 a.m. EDT 0 Replies
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Hi Everyone
I have done the "Pull-In of an RF MEMS Switch" tutorial: https://www.comsol.com/blogs/simulating-rf-mems-switch/
It is a nice tutorial, but I don't understand the choices made regarding the solvers used. Therefore, I am listing my questions here together with the original instructions of the tutorial. Hopefully someone can help me or guide me to a good reference.
1 In the Settings window for Time Dependent, locate the Study Settings section.
2 In the Times text field, type range(0,5e-7,5e-5).
3 Locate the Physics and Variables Selection section. Select the Modify physics tree and variables for study step check box.
4 In the Physics and variables selection tree, select Component 1 (comp1)>Electromechanics (emi)>Terminal 3.
5 Click Disable.
- What is the aim of these steps?
- Why do we have to disable terminal 3 ?
Change the default solver to a Fully CoupledDirect solver and use BDF time stepping 3. Why do we have to change the default settings to BDF time stepping and Fully Coupled Direct?
Thank you very much.
I actaully have a bit more questions regarding this tutorial. Please have a look at the attached file.
Thank you very much for your time!
Attachments:
Hello Dorian Herle
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