Download Comsol 6.0 Crack

On Mac OS X, controlling the number of processor cores used by COMSOL is only possible when launching COMSOL from the Terminal application. The default behavior is to use all available physical processor cores for the COMSOL Multiphysics application. You can find how many processor cores you have in the System Profiler application, or by using the command sysctl hw.ncpu. You can override the default by using the command line switches. For example, start COMSOL with 2 threads using the command /Applications/COMSOL61/Multiphysics/bin/comsol -np 2.

On Linux the default behavior is to use all available physical cores for the COMSOL Multiphysics application. You can override the default behavior by using the command line switches. For example, start by the command comsol -np 2.

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Go to the Config Services page. Change the paths to lmgrd.exe, and license.dat so that they all point to the COMSOL 6.1 installation directory. Starting with the version of the Flexnet distributed with COMSOL Multiphysics 5.4, the permissions where the license manager is allowed to write has been changed. The current recommendation is to store the debug log file, comsol61.log in the directory C:\ProgramData\COMSOL.

Stop the COMSOL license manager: Make the comsol60/multiphysics/license/$arch directory the current directory, where $arch is either glnxa64 (64-bit Linux), glnxarm64 (ARM Linux), maci64 (64-bit macOS), or macarm64 (ARM macOS). Stop the 6.0 license manager with the lmdown command:

Because your /home directory is limited in space, it is a good idea to move and symlink the ~/.comsol directory to your /data directory, where there is a much largeramount of disk space available. This can be done like this:

I want to validate my lumerical FDTD setup by reproducing two similair metasurfaces from two papers. One follows up research on the other so they use the same COMSOL finite element method and the second paper minorly edited this comsol file for the different geometry (which is important later).

I have a normally incident plane wave source in the band of 750-800nm, and a frequency monitor spanning the entire the simulation volume above the SiO2 layer region with 250 sampling points. My goal is to reproduce the surface lattice resonance found in the papers (links below). This resonace is due to the periodicity of the structure which can be tuned with by setting the x and y span of the unitcell roughly equal to the desired resonance wavelength. By looking at the maximum electric field enhancement per wavelength in the volume of the simulation, in the papers referred as maximum field enhancement, these resonances can be easiliy indentified by a fano-style peak in the frequency band.

The structure of the first metasuface is given below in fig 1 where the pillars are Si and are positioned upon a small layer of SiO2 and a larger layer of gold.

I was able to perfectly reproduce the resonance of the first metasurface by using the conformal variant 1 meshing method and stepwise refine the mesh by increasing the number of meshcells per wavelength up to 50. This gave a nice convergence of the maximum field enhancement of the resonance where it rises towards the value of 140 which was also found in the first paper using comsol FEM.

-A while ago I did convergence testing for the PML and Z-boundary height (where the PMLs reside), in both cases their error was a few orders lower than that of the meshing. As a sanity check I increased the number of PML layers from 32 to 56 but this did made no difference.

- I did convergence testing in the range of 10 to 50 meshcells per wavelength with steps of 1 with conformal variant 1 method, for metasurface 1 the refining it nicely converges to the expected value and at 50 meshcells per wavelength I declared that the resonance was fully reproduced. The original work had a resonance with an electric field enhancement of 140 and in lumerical this is 135. For metasurface 2 the resonance very quickly converges to 50 at 30 meshcells per wavelength while in comsol the same metasurface gives an electric field enhancement of 85 .

- Since I do have acces to the original COMSOL files of the simulations I compared the meshing. The meshing seems to be as fine, if not finer, as their simulations.

As of July 2021, the Department of Chemical Engineering participates in a shared comsol license with other departments across the college and University. The teaching license (CKL) is available to anyone on-campus and does not require any registration or special configuration. The research license (FNL) is limited to registered users only, by Andrew ID. The username on your computer MUST match your Andrew ID. Faculty and PhD students are registered for the research license by default. Anyone else that needs to use this license must request access by sending an email to cheme-computing@andrew.cmu.edu .

4. When prompted for license information, use the drop-down menu labeled license format and select @. Input 1718 for the port number and comsol.andrew.cmu.edu for the host name. Click Next. ff782bc1db