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multiphase flow

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Old   September 22, 2018, 14:06
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Tonoy Mondol
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I am going to simulate solar still using nanofluid. upper a glass surface and constant temp. lower is a wood surface of constant temp.VOF model is used.now my question is: what is the phase interaction I will provide? water to vapor and vapor to water or only the first? and also is there any option to put latent heat of vaporization in ANSYS? and if I add nanoparticle with water then is it possible to do with VOF? or mixture model is necessary?
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Old   September 24, 2018, 09:16
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Bhargav Bharathan
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Quote:
Originally Posted by Tonoy Mondol View Post
I am going to simulate solar still using nanofluid. upper a glass surface and constant temp. lower is a wood surface of constant temp.VOF model is used.now my question is: what is the phase interaction I will provide? water to vapor and vapor to water or only the first? and also is there any option to put latent heat of vaporization in ANSYS? and if I add nanoparticle with water then is it possible to do with VOF? or mixture model is necessary?
Hi,

To use VOF you need to have 2 or more immiscible fluids. Check out the link below:
https://www.sharcnet.ca/Software/Flu...ug/node881.htm

-BB
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Old   September 24, 2018, 13:55
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Mehdi Asghari
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Quote:
Originally Posted by Tonoy Mondol View Post
I am going to simulate solar still using nanofluid. upper a glass surface and constant temp. lower is a wood surface of constant temp.VOF model is used.now my question is: what is the phase interaction I will provide? water to vapor and vapor to water or only the first? and also is there any option to put latent heat of vaporization in ANSYS? and if I add nanoparticle with water then is it possible to do with VOF? or mixture model is necessary?
Hi.

Also , you need the implementation of phase change in VOF model.

There are a lot of papers & references for this purpose.

Good luck.

M.Asghari
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Old   September 25, 2018, 11:49
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Tonoy Mondol
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Originally Posted by bhargavbharathan View Post
Hi,

To use VOF you need to have 2 or more immiscible fluids. Check out the link below:
https://www.sharcnet.ca/Software/Flu...ug/node881.htm

-BB
the problem consists of water initially at the bottom.which is provided with a patch. after time has gone the water produces vapor through natural convection.
please give me your mail id then I will give you the problem description and you help me if you can
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Old   September 25, 2018, 11:51
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Tonoy Mondol
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Originally Posted by Asghari_M View Post
Hi.

Also , you need the implementation of phase change in VOF model.

There are a lot of papers & references for this purpose.

Good luck.

M.Asghari
if you have any reference then give me.what is the procedure for implementaion? is it UDF?
my mail - tonoymondol@gmail.com
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evaporation condensation, latent heat, multiphase flow, vof

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