Meshing for a conductor that is tinner than its skin depth

jerometeoh
jerometeoh Altair Community Member
edited December 2022 in Community Q&A

Good afternoon,

Recently I came accross of a conductor that is tinner than the calculated skin depth.

I believe I just dont need the layer mesh option?

Any strategies for this?

 

Also, what is the benefit of meshing the skin layer or without meshing the skin layer.
Is it to account to sharp changes of currect density?

 

Thanks,

Jerome.

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Best Answer

  • SimonGuicheteau
    SimonGuicheteau
    Altair Employee
    edited December 2022 Answer ✓

    @Abdessamed  I think you missed the question

    If the skin depth is more than the size of the conductor, then you won't have a skin effect in the conductor and will probably have an homogenous current density.

    In general it is important to have at least 2 elements in the skin depth to ensure the correct computation.

    --> If the skin depth is bigger than the conductor, you can even define the conductor as a coil to save computation time. But any mesh should work fine.

    --> If it is a bit smaller you need to mesh it carefully. Making sure you have those two elements in the skin depth

    --> If it is so small than meshing it would be difficult, then here you should use impedance surface method which will take this very small skin depth into account virtually.

Answers

  • asoualmi
    asoualmi
    Altair Employee
    edited April 2022

    Hi,

    In the case where the conductor is inner the skin depth you need to use surface impedance region. You can find in the help of Flux more details about this region.

    The benefit of mesh layer: this allows you to consider the skin depth and allows also to control the mesh on the region easily.

    Thanks.

  • SimonGuicheteau
    SimonGuicheteau
    Altair Employee
    edited December 2022 Answer ✓

    @Abdessamed  I think you missed the question

    If the skin depth is more than the size of the conductor, then you won't have a skin effect in the conductor and will probably have an homogenous current density.

    In general it is important to have at least 2 elements in the skin depth to ensure the correct computation.

    --> If the skin depth is bigger than the conductor, you can even define the conductor as a coil to save computation time. But any mesh should work fine.

    --> If it is a bit smaller you need to mesh it carefully. Making sure you have those two elements in the skin depth

    --> If it is so small than meshing it would be difficult, then here you should use impedance surface method which will take this very small skin depth into account virtually.

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