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frequency superior limit of RF analysis in Windows XP 32-bit
Posted Jun 9, 2011, 7:28 a.m. EDT 1 Reply
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Hello everyone,
I'm doing some simulations about electromagnetic wave (visible spectrum, about 1e14Hz ~ 1e15Hz) propagation in a silicon waveguide.
And I wonder if there is a frequency superior limit for COMSOL RF module analysis(3D model) .
Because my system is XP 32-bits, and when I do the simulation, it shows constantly "out of memory", especially when the MESH is at a highly refined level.
Waiting sincerely for your suggestions.
I'm doing some simulations about electromagnetic wave (visible spectrum, about 1e14Hz ~ 1e15Hz) propagation in a silicon waveguide.
And I wonder if there is a frequency superior limit for COMSOL RF module analysis(3D model) .
Because my system is XP 32-bits, and when I do the simulation, it shows constantly "out of memory", especially when the MESH is at a highly refined level.
Waiting sincerely for your suggestions.
1 Reply Last Post Jun 9, 2011, 8:37 a.m. EDT
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Posted:
1 decade ago
Hi
for me there is no limit in the physics w.r.t. wavelength size. Th limit is coming from the fact that you need idealla 5-10 mesh elements per wavelength (in the material) so the higher the frequency the denser the mesh, and then you hit easily a RAM limit.
For such simulations optical RF, I suggest strongly 64 bit OS and dozens of Gb RAM, and even if you go to 3D cluster might be required. This is not a "COMSOL" limi, its FEM and RAM & HW limitations
--
Good luck
Ivar
for me there is no limit in the physics w.r.t. wavelength size. Th limit is coming from the fact that you need idealla 5-10 mesh elements per wavelength (in the material) so the higher the frequency the denser the mesh, and then you hit easily a RAM limit.
For such simulations optical RF, I suggest strongly 64 bit OS and dozens of Gb RAM, and even if you go to 3D cluster might be required. This is not a "COMSOL" limi, its FEM and RAM & HW limitations
--
Good luck
Ivar