Remesh around rotaiting part

tehran
tehran Altair Community Member
edited October 2020 in Community Q&A

I faced a problem in 3D flux simulation

when I define an air region between the fixed part and rotating part as compressible I face the below error

Remeshing of Mecha. Sets impossible on the current time step

Remeshing of Mecha. Sets impossible on the previous time step

before solve i cheeked physics and there is no problem and all thing is ok.

please guide me.

regards

 

 

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Answers

  • asoualmi
    asoualmi
    Altair Employee
    edited January 2019

    Hi,

    You will find attached a link to see how to use the compressible in Flux:

    file:///C:/Program%20Files/Altair/2018/Flux/Flux/Help/Flux/english/Website/index.html?GeometrieEtMaillageAvecZoneDairCompressible3D

    If the problem persist, send us your Flux project.

    Best regards.

  • tehran
    tehran Altair Community Member
    edited January 2019
    Altair Forum User said:

    Hi,

    You will find attached a link to see how to use the compressible in Flux:

    file:///C:/Program%20Files/Altair/2018/Flux/Flux/Help/Flux/english/Website/index.html?GeometrieEtMaillageAvecZoneDairCompressible3D

    If the problem persist, send us your Flux project.

    Best regards.

    Hello
    I acted as a guide, but there is still that problem So I have sent the file to you in the attachment.

     

    Best Regards.

    Unable to find an attachment - read this blog

  • plombard
    plombard
    Altair Employee
    edited February 2019

    Hello,

    With periodicity, it is forbidden to use compressible mechanical set. Please remove it, and assign the AIRGAB region either to ROTOR or STATOR mechanical set..

    Note that it is better to have 2 layers in the airgap, one belonging to ROTOR mechanical set, and one belonging to STATOR. Please have a look at the way it is done in our demo case given with Flux supervisor (for instance Brushless IPM motor (embedded magnets).

    It is surprising that the rotor is fully circular. It seems that the geometry is not fully done. You should define the rotor as solid cnductor to get a torque.

    I hope it will help.

     

  • tehran
    tehran Altair Community Member
    edited March 2019
    Altair Forum User said:

    Hello,

    With periodicity, it is forbidden to use compressible mechanical set. Please remove it, and assign the AIRGAB region either to ROTOR or STATOR mechanical set..

    Note that it is better to have 2 layers in the airgap, one belonging to ROTOR mechanical set, and one belonging to STATOR. Please have a look at the way it is done in our demo case given with Flux supervisor (for instance Brushless IPM motor (embedded magnets).

    It is surprising that the rotor is fully circular. It seems that the geometry is not fully done. You should define the rotor as solid cnductor to get a torque.

    I hope it will help.

     

    thanks for your help

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