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-   -   copper viscosity!!! (http://www.cfd-online.com/Forums/cfx/97661-copper-viscosity.html)

gooya_kabir February 22, 2012 05:55

copper viscosity!!!
 
Hi, at first thanks for your help:*
I run a multiphase flow, continuous liquid(water) with dispersed solid(copper).
in pre setup, this message appear:
In Analysis 'Flow Analysis 1' - Domain 'Domain 1': The following materials require Viscosity to be defined: 'Copper'
but there is no box in material section to define viscosity, what do you think?
thanks alot

DanielLai February 23, 2012 09:23

ya.. same here as well...another problem is

In Analysis 'Flow Analysis 1' - Domain 'fluid': The use of the 'Liquid Evaporation Model' in the component pair 'H2O | Water' requires the existence of a Homogeneous Binary Mixture that defines the Antoine coefficients.

.i already create the homogeneous binary mixture material.. but where to insert it to the fluid domain ????? thanks....

tauqirnawaz February 23, 2012 12:10

Quote:

Originally Posted by DanielLai (Post 345919)
ya.. same here as well...another problem is

In Analysis 'Flow Analysis 1' - Domain 'fluid': The use of the 'Liquid Evaporation Model' in the component pair 'H2O | Water' requires the existence of a Homogeneous Binary Mixture that defines the Antoine coefficients.

.i already create the homogeneous binary mixture material.. but where to insert it to the fluid domain ????? thanks....

Can you both please take a screen print of your Domain>Basic Settings?

gooya_kabir February 25, 2012 01:46

print of basic setting
 
1 Attachment(s)
the attached file is a screen print of basic setting
thanks very much

tauqirnawaz February 27, 2012 08:07

Quote:

Originally Posted by gooya_kabir (Post 346214)
the attached file is a screen print of basic setting
thanks very much

You would have to manually define a very small insignificant molecular viscosity of copper.
Click on material tab on top menu, and define a new material and name it "copper1". Use the following options,

Basic Settings>Option> Pure Substance
>Material Group>User

Define all the material properties as in predefined "Copper", you can now define viscosity as well in
Material Properties>Transport Properties>Dynamic Viscosity.


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