[Aarthy Meena]

Hello all,

I am trying to model nanofluid flow over a 2D circular cylinder using mixture model based multi-phase approach.

In literature, I see that the effective properties of the mixture are calculated using theoretical models. But, FLUENT by default calculates it by averaging.

I understand that a UDF can be written to this.

But, I am unable to guess to which property this UDF must be assigned. Because, in boundary conditions and material properties only the particle and basefluid properties are required to be feeded.

Please help me understand this.

Thanks in advance.

Happy New Year.

[a_Sarlak]

hi dear friend
did u find any ufd to change proprty?
thanks

[mohammad faizan]

Originally Posted by Aarthy Meena

Hello all,

I am trying to model nanofluid flow over a 2D circular cylinder using mixture model based multi-phase approach.

In literature, I see that the effective properties of the mixture are calculated using theoretical models. But, FLUENT by default calculates it by averaging.

I understand that a UDF can be written to this.

But, I am unable to guess to which property this UDF must be assigned. Because, in boundary conditions and material properties only the particle and basefluid properties are required to be feeded.

Please help me understand this.

Thanks in advance.

Happy New Year.

Hello,
Did you find how to write UDF for that,
i have also some queries..
1) How to calculate mixture viscosity, as the secondary phase is solid.
2) At the inlet, velocity is calculated from the Reynolds number where mixture viscosity is required?
3) Also at the inlet Both secondary phase and primary phase has same velocity which is calculated from Reynolds number?