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Multi species

cjc_21934

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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ydigit

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

Thank you, ydigit.

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

acupro

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.