What is the reason behind the disabled symmetry option in FDTD?

Vishakha Pandharpure_20595
Vishakha Pandharpure_20595 Altair Community Member
edited July 2023 in Community Q&A

Hi

I want to run an antenna model using FDTD in order to compare results with time domain solver in another s/w. For Feko FDTD solver, the memory requirements are high and the speed is very low. Why is the symmetry option disabled in Feko? Is there an alternative to speed up the simulation?

 

Thanks & regards

Vishakha Pandharpure 

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Answers

  • Raja Devata
    Raja Devata
    Altair Employee
    edited June 2023

    Hi Vishakha,

    Development team is working on the symmetry option for FDTD. We can expect this feature in the upcoming versions.  

    MoM, FEM solvers support the symmetry option to improve the memory and run times. If you would like to share the model with us or atleast mention about the specifications of the antenna, we can review and provide you the best possible solution for this antenna problem. 

    I am attaching the patch antenna example solved using MoM and FEM solvers using symmetry option. Please go through the attachments.

    Thanks!

    Regards,
    Raja.

  • Vishakha Pandharpure_20595
    Vishakha Pandharpure_20595 Altair Community Member
    edited July 2023
    Raja Devata said:

    Hi Vishakha,

    Development team is working on the symmetry option for FDTD. We can expect this feature in the upcoming versions.  

    MoM, FEM solvers support the symmetry option to improve the memory and run times. If you would like to share the model with us or atleast mention about the specifications of the antenna, we can review and provide you the best possible solution for this antenna problem. 

    I am attaching the patch antenna example solved using MoM and FEM solvers using symmetry option. Please go through the attachments.

    Thanks!

    Regards,
    Raja.

    Thanks a lot for you reply. The patch antenna models are useful. It would be really helpful if you could suggest a suitable solution method for our antenna. Can I get your email id for this purpose?

    Thanks & regards

    Vishakha

  • Vishakha Pandharpure_20595
    Vishakha Pandharpure_20595 Altair Community Member
    edited July 2023

    Hi

    I simulated the antenna model using FEM solver. But it didn't run till the end and stopped with error 

    33502:  Internal Feko error . 

    Please let me know the email id where I can send the antenna model without compromising the confidentiality. 

     

    Thanks and regards

    Vishakha 

  • Shannon_Mistry
    Shannon_Mistry
    Altair Employee
    edited July 2023
    Vishakha Pandharpure_20595 said:

    Hi

    I simulated the antenna model using FEM solver. But it didn't run till the end and stopped with error 

    33502:  Internal Feko error . 

    Please let me know the email id where I can send the antenna model without compromising the confidentiality. 

     

    Thanks and regards

    Vishakha 

    Hi Vishakha,

    Please create a Support Request through https://community.altair.com/ Go to Customer Service>Support>Create Case.

    You can describe your question and upload the files here. Someone from our team will then assist you.

    Regards,

    Shannon

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