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Simulations & Solvers

FDTD, Low-Frequency, Neuron, Mode-Matching, Flow, Acoustics, etc...

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  • FDTD, Low-Frequency, Neuron, Mode-Matching, Flow, Acoustics, etc...

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    12 Topics
    33 Posts
    brynB
    @viniltc, the error looks like you do not have a simulation called "Simple ES" (the returned simulation is None). Please double-check the name, including white-spaces. You can also access by index (document.AllSimulations[0]).
  • PdhAddCounter for processor total failed

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  • Sensors placement

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  • Running the simulation causes the software to hang

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  • Unable to see 1g and 10g SAR Values

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    ofliO
    Dear Shreya, I assume you meant simulated 1g and 10g SAR values. If you are referring to dipole antenna tutorial, it is not possible to extract SAR values since the simulation project does not contain any lossy object - it is just a dipole antenna in free-space. Please check "SAR in a Flat Phantom" tutorial and section 3.1.4 of Sim4Life tutorial document for details related to SAR simulation and extractions.
  • This topic is deleted!

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  • Issue with simulation of Temporal Interferece on a head model

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    Paria M.P
    Dear AntoninoMC, Thank you for your comprehensive solution!!! Following your advice, I assigned distinct priorities to each tissue, and there is no more need for boolean operations (subtraction). This approach proved to be completely successful.
  • Extracting A/H fields from EM LF Electro QS simulations

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    AntoninoMCA
    Hi @tcs, EM LF Electro QS simulations are electric simulations executed in the LF approximation, where the electric and the magnetic fields are decoupled. Therefore, the electric simulations do not produce any magnetic-related quantity (H and A-field). In order to simulate problems involving magnetic fields, one of the EM LF Magneto solvers need instead to be used). If your problem involves radiofrequency EM fields instead (e.g. above 1MHz), the EM LF solvers may be inadequate and you should use the FDTD solvers. All the best!
  • waveguide modes tool dieletric material

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    ofliO
    Hi Micol, Did you model the waveguide filling (where you placed the waveguide source) and set the material parameters of this object correctly in the simulation settings?
  • File is not opening

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    ofliO
    Hi, please send the file to s4l-support@zmt.swiss address. Thanks.
  • Simulation failure in multiport simulations

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    SylvainS
    Something must be wrong in your simulation setup. It is unlikely to be due to the fact that it is a multiport simulation (since under the hood a multiport simulation is just a bunch of "single" FDTD simulations). I would suggest you check the voxels of your simulation (View Voxels) and ensure that they accurately represent what you are trying to simulate. Pay special attention to the sources and the connectivity between the sources and the various PEC elements.
  • Acoustic Simulation - Different Frequencies

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  • Nanoparticle photothermal therapy modeling

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    I
    Hi Anna, I see that nobody answered to your question. Were you able to run this type of simulation? I would like to to a phototermal therapy as well using metallic nanoparticles with a laser. I am not sure if with sim4life this type of simulation can be done or not. If you could tell your experience on this, it would be great. Thanks in advance for your time and help, All the best, @AnnaGol
  • define source

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    H
    Hi Michael, Yes, this sounds reasonable. You define the frequency in the Setup settings of the simulation, and you define three boundary conditions, -1, +1, and 0V. Best, Habib
  • I'm not getting the TMS example tutorial to run

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    H
    Hi Marcus, This doesn't appear to be related to Windows Defender. However, from the log you pasted, it is not exactly the tutorial of TMS. The grid is different than what is described in the tutorial, and there is an additional object in the simulation "Reference_Plane". Something in your setup is not correct anymore and cause the solver to fail. With the amount of information I have here, I cannot suggest a solution. Please try to run the tutorial as it is (maybe open the project file and run it, instead of building it from scratch), and see if this one fails too. Best, Habib
  • PEC extension error in edge source

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    ofliO
    Hi @VigneshYork Please carefully check that the voxels of the edge sources are correctly generated. You can use the "Connectivity" mode under in Voxel Viewer to check that the edge sources are correctly connected. If that is not the case, you need to work on the grid to fix the issue.
  • ERROR: An aXware function call failed and reports:

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    ofliO
    Hi @wouterverhelst This error can appear with simulations having a non-optimal grid with at least one very small cell leading to a very small step size. Could you please inspect the grid in your simulation and see if it can be improved? Please use "Connectivity" option in voxel view to make sure that the source is connected. If possible, please share more info, for example, parts of the log file where you can see min grid step, time step and initialization of source(s): [INFO]: Number of cells: … [INFO]: Number of cells including PML: … [INFO]: X: Range [.. ... .. ] with minimal .. and maximal step .. [m] [INFO]: Y: Range [.. ... .. ] with minimal .. and maximal step .. [m] [INFO]: Y: Range [.. ... .. ] with minimal .. and maximal step .. [m] … [INFO]: Simulation Time Step: … sec … [INFO]: Sources: [INFO]: Initializing edge source Lines 1 (Sources) … …
  • Resonance frequency changes with type of voxeler used

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  • Simulation Failed (Memory request)

    Solved memory fault
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    L
    Dear Habib, Works! Thank you!
  • Please need urgent help

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    L
    Hello Rehmanuzair, I think the problem is about the system connection You have to go to task manager then you find the networking where you connect the system. and you will be able to Run.
  • How to use multiple GPUs for a simulation?

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    M
    Could you paste the whole log? If the problem runs in 1 GPU, could you test that? Can you try reducing the grid resolution and see if it runs successfully then?