The post by Youcef Attou is very insightful and it can save a lot of time for those who want to do MHD using COMSOL. I would like to share my experience of using COMSOL to analyze the tokamak start-up physics, in particular the ECRH assisted plasma pre-ionization. I found that COMSOL is very useful for such studies. However, it is not the tool for MHD studies.
Thank you very much for sharing your experience Ahmad Ali ! Initially, I would like to take a proof of concept to investigate whether a physical phenomenon can occur as I imagined. Later, if the phenomenon is proven, I will refine the calculations and analyzes.
the post of COMSOL blog is very general, and usually those procedures are not adopted in modelling MHD. We use low-Rm approximation and EC + SPF is usually sufficient. Take a look here: