Solving COMSOL Error 7147 with Heat Transfer & RAM

[rr00053]

Hi everyone,
I am doing a simulation using COMSOL 3.3a... I am using heat transfer module. I have 3 subdomains in my design with sizes in range mm, micrometre and nanometer...the third nanometre block appears just as a line...bt however i was able to give all boundary and subdomain details as i wanted...i did meshing and wen i proceeded with solving it says...
error 7147: out of memory in time dependent solver.

how can i get through with this error...please help me...

Thanks in advance.

 

[Topher925]

When running on my PC that usually means that I ran out of RAM. The solution: decrease your mesh size or buy more RAM.

 

[oswaler]

Hello,

Thank you for reaching out with your question. Error 7147 in COMSOL indicates that the solver has run out of memory during the time-dependent simulation. This can happen when the problem is too large or complex for the available memory on your computer.

To solve this issue, there are a few things you can try:

1. Increase the available memory for COMSOL by adjusting the memory allocation settings. You can do this by going to File > Preferences > Memory. Make sure the "Memory Allocation Mode" is set to "Automatic" and try increasing the "Maximum Heap Size" value.

2. Simplify your problem by reducing the number of subdomains or decreasing the size of your problem. This will reduce the memory requirements and may allow the simulation to run successfully.

3. Try using a more powerful computer with more memory to run the simulation.

4. If you are using a time-dependent solver, try using a stationary solver instead. This may also reduce the memory requirements.

I hope these suggestions help you solve the error and successfully run your simulation. If you continue to have trouble, I recommend reaching out to COMSOL support for further assistance.

Best of luck with your simulation!

Sincerely,

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