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-   -   FLUENT problem for newbie (http://www.cfd-online.com/Forums/fluent/118655-fluent-problem-newbie.html)

lbrumf2 May 31, 2013 17:16

FLUENT problem for newbie
 
I have run a few 2d, steady state, single phase heat transfer models. No problem.

Basically, natural convection of water over a heated isothermal flat plate (I'm building up to more complex simulations). I want to repeat the simulation with a modified surface (my research). I wanted to apply an isothermal condition at the bottom of the structures and see how the temperature varies through it. So now I would apply an isothermal condition at the base of the structures.

The problem is I don't know how to have the two different materials (solid and fluid) in the model.

lbrumf2 June 3, 2013 12:08

bumping for help please!

oj.bulmer June 3, 2013 14:33

Make sure that in your meshing, the fluid and solid parts are two domains. In FLUENT, under cell zone conditions, apply the respective domains as solid and liquid.

OJ

yashganatra June 12, 2013 02:09

Hi,
I am modelling a solidification problem in a square enclosure. I want the material inside the enclosure to be selected as a fluid. For this, i defined the new material( say liquid_metal), and applied this in the CELL ZONE condition tab and selected the type as fluid.

However when I write a Initialization UDF, I use a if(FLUID_THREAD_P(t)) structure reference to initialize liquid fraction to 1. However, still its showing zero only.

Is this procedure of setting the Cell Zone condition correct?

Thanks in advance


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