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dB/dt in flux 3D transient solver?

User: "Leon Lin"
Leon Lin
Altair Community Member

I would like to know if Flux 3D has the functionality to differentiate with respect to time. I want to calculate dB/dt.

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    User: "Letizia_Ferrara"
    Letizia_Ferrara
    Altair Employee

    Hello Leon,

    Thanks for writing.

    It is possible to calculate the derivative of a curve within Flux, you can find more information here:

    https://help.altair.com/flux/Flux/Help/english/UserGuide/English/topics/Courbe2DDerivee.htm

    Best regards,

    Letizia

    User: "Leon Lin"
    Leon Lin
    Altair Community Member
    OP

    Hi Letizia,

    Thanks for your reply.
    I not only want to plot the 2D curve.

    My goal is to calculate the time-domain ferrite core loss using the iGSE method. This requires integrating a function based on dB/dt, which is derived from the time-domain B(t) data.

    Best regards,
    Leon Lin

    User: "Letizia_Ferrara"
    Letizia_Ferrara
    Altair Employee

    Hello Leon,

    Unfortunately is not possible within Flux: you should export the local quantities versus time and then use an external script to use the iGSE method and compute the derivative.

    Alternatively, iron losses can be calculated using the "automatic" modified Bertotti method available in Flux.

    Best regards,

    Letizia

    User: "Leon Lin"
    Leon Lin
    Altair Community Member
    OP

    Where can I find the "automatic" modified Bertotti method in flux?

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