Multi species

cjc_21934
cjc_21934 Altair Community Member
edited October 2020 in Community Q&A

Hello all,

 

I am trying to simulate something similar to Workshop 9 - Honey in Tea - but with two initially separated species instead of one which will mix with the tea and between them. 

I have defined Species 2 in the same manner like Species 1 and with concentration 1 in the initial volume of the second honey lump. I don't know how to define the material of the mixed fluid.

Any suggestion much appreciated. 

 

 

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Answers

  • ydigit
    ydigit
    Altair Employee
    edited January 2017

    This would requires a UDF that specifies how the three components interact (for density and viscosity). Probably best to contact your local Altair Support as setting up this UDF might require some intensive support.

  • cjc_21934
    cjc_21934 Altair Community Member
    edited January 2017

    Thank you, ydigit. 

    Would the UDF still be necessary if the two species had the same properties?

     

  • acupro
    acupro
    Altair Employee
    edited February 2017

    If all the material properties are the same - so they do not depend on the species concentration (as in blue water mixing with red water) - then you would simply apply the basic material model with constant properties to the fluid volume(s).  Then the species would act as a simple scalar for tracking purposes.

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