Solving COMSOL Error 7147 with Heat Transfer & RAM

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SUMMARY

The discussion addresses the COMSOL error 7147 encountered during simulations using COMSOL 3.3a with the heat transfer module. The user experiences an "out of memory" error when attempting to solve a model with subdomains of varying sizes, including nanometer dimensions. The primary solutions proposed are to decrease the mesh size or to increase the system's RAM to accommodate the simulation requirements.

PREREQUISITES
  • Familiarity with COMSOL Multiphysics 3.3a
  • Understanding of heat transfer simulations
  • Knowledge of meshing techniques in finite element analysis
  • Basic concepts of computer memory and RAM specifications
NEXT STEPS
  • Research techniques for optimizing mesh size in COMSOL simulations
  • Explore RAM upgrade options for improved simulation performance
  • Learn about memory management in COMSOL for large-scale simulations
  • Investigate alternative solvers in COMSOL for handling memory constraints
USEFUL FOR

Engineers, researchers, and simulation specialists working with COMSOL Multiphysics, particularly those focused on heat transfer applications and dealing with memory-related issues in simulations.

rr00053
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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.
 
Engineering news on Phys.org
When running on my PC that usually means that I ran out of RAM. The solution: decrease your mesh size or buy more RAM.
 

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