u/CHAHRAZED02

Hi everyone, I’m trying to understand how long-term thermal behavior is usually handled in COMSOL for rotating machines. For example, PMSM simulations are often performed over only a fraction of a second or a few electrical cycles, but if I want to study the temperature evolution over 1–2 minutes, how is this normally done? In my case, I have a rotating conducting plate heated by permanent magnets, and a fully coupled electromagnetic + thermal simulation becomes extremely heavy because the electromagnetic field has to be solved continuously during the rotation. What is the recommended approach for predicting the temperature after 1–2 minutes without simulating every single rotation over the entire period?

Hi everyone, I’m trying to understand how long-term thermal behavior is usually handled in COMSOL for rotating machines. For example, PMSM simulations are often performed over only a fraction of a second or a few electrical cycles, but if I want to study the temperature evolution over 1–2 minutes, how is this normally done? In my case, I have a rotating conducting plate heated by permanent magnets, and a fully coupled electromagnetic + thermal simulation becomes extremely heavy because the electromagnetic field has to be solved continuously during the rotation. What is the recommended approach for predicting the temperature after 1–2 minutes without simulating every single rotation over the entire period?

Hello guys

I wanna improve my french skills actually I have a b2 level but I don't feel like my language is spontaneous also I have a problem choosing the verb tenses

Is there a native speaker can help with?

Thank u

Simulating a rotating plate above permanent magnets using a stationary study with Magnetic and electric field +(Lorentz forces). It works fine at low speeds (~10 rpm), but pushing it to higher speeds triggers solver convergence errors. Any advice on stabilizing the stationary solver or handling high-velocity terms in this setup?

Hello everyone i'm working on induction heating using rotating magnets for this work I chose moving mesh rmm ,Electric current (ec), heat Transfer in solids,and multiphysics electromagnetic heating the issues is that the simulation starts working normally and it gives me results but when t=0.1S it stops saying that solver cannot converge !

Second issue is that it tooks too much time more than 4hours

Is there Any other method I can use to avoid this problem?

Hello everyone i'm on my final year in electrical engineering and i really want to do a phd in france i applied for some offers on the website ADUM. Fr but i got no answers i feel so sad about that. I heard that most of offers are distributed in march or april Do i have chances? I would really hear your opinions! Thank u

Hello I'm finishing my master this summer in electrical engineering i find some offers of phd positions in france i applied for them in the website Adum.fr it's been a month but i received no answer do they actually give answers on this website? Mostly of these offers will begin 1st octobre. I feel a bit stressed about it

Hello everyone i installed comsol multiphysics from getintopc to learn the software while using it i didnt understand some interfaces so i contacted the support team and i sent them the file They sent me an email on 13th june saying it's unauthorized license and i should immediately remove both the file and the software and i should tell the source of this cracked version and they asked me to sign a cease and desist letter and return it in 5 days So i didn't answer them and i stopped using the software but the files still exists Am i in danger? Does anyone here have a similar situation?

Hello everyone i wanna do a simulation between 2 coils but with a varying coupling coefficient K between them how can introduce the variation in ltspice Thank u all

Hello everyone i'm working on zvs driver on ltspice i wanted to simulate how a varying coupling coefficient between 2 inductors can affect the current and voltage form Do u have an idea about it?

Guys how can i find a specific components? I need a choke inductor is there a specific library?

Hello everyone actually i'm in my final year in electrical engineering and i really want to write a paper any advice? How can i find a real gap?
Thank u all

Hello everyone i'm looking for someone who can help me with my simulation using comsol multiphysics i've been stuck with it for a month (i'm using rmm interface) Thank u

Hello i'm looking for someone who can help me with my first pcb i really want feedbacks from expert before going to manufacture Thank u all