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How to simulate Water vapor condensation?

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Old   October 13, 2022, 06:33
Default How to simulate Water vapor condensation?
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I want to model and understand the condensation process in high speed flows, for example if i want to study transonic bump, which may create weak shock wave which in turn create non equilibrium condensation.

Medium: Air.
1)How to create material property of air? If I want to vary the relative humidity how should I create material? Do I have to use CCL or CEL?

2) Is MUSCL TVD scheme available in CFX? How can i make it enable? if not what are the other compatible discretization schemes available for CFX?

3)How to include droplet growth model?

4) How to visualize droplet growth? I mean what is the parameter I should enable to make it calculate so that i can post process in CFD post or Tecplot?

If you find any related documents to study, please share....
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Old   October 13, 2022, 09:20
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Quote:
Originally Posted by manupanand View Post
I want to model and understand the condensation process in high speed flows, for example if i want to study transonic bump, which may create weak shock wave which in turn create non equilibrium condensation.

Medium: Air.
1)How to create material property of air? If I want to vary the relative humidity how should I create material? Do I have to use CCL or CEL?

2) Is MUSCL TVD scheme available in CFX? How can i make it enable? if not what are the other compatible discretization schemes available for CFX?

3)How to include droplet growth model?

4) How to visualize droplet growth? I mean what is the parameter I should enable to make it calculate so that i can post process in CFD post or Tecplot?

If you find any related documents to study, please share....
Have you read the documentation for the non-equilibrium condensation model? The droplet growth models of Young and Gyarmathy are already implemented.
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Old   October 13, 2022, 21:37
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Quote:
Originally Posted by Opaque View Post
Have you read the documentation for the non-equilibrium condensation model? The droplet growth models of Young and Gyarmathy are already implemented.
Thank you for the reply. I had checked it in CFX reference guide I have not seen this. I was confused because several journal paper related to high speed flows did not mentioned about what model, I will have to try this.
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Old   October 14, 2022, 10:03
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https://journals.sagepub.com/doi/abs...57650917730664

https://www.sciencedirect.com/scienc...510020305692#!
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Old   October 14, 2022, 21:13
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Thank you for sharing the reference.
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Old   November 9, 2023, 22:43
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Quote:
Originally Posted by Opaque View Post
Have you read the documentation for the non-equilibrium condensation model? The droplet growth models of Young and Gyarmathy are already implemented.
Hello, I am conducting numerical simulations of non equilibrium condensation. I hope to customize the nucleation rate equation by using the CEL language, but the calculation results are not the same as those of the built-in formula in CFX. Can you give me some advice in this regard? I have posted the specific details on the forum. Thank you very much.
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File Type: jpg my JCL expression.jpg (43.8 KB, 3 views)
File Type: jpg nucleation rate with my JCL.jpg (69.6 KB, 4 views)
File Type: jpg nucleation rate with CFX JCL.jpg (67.6 KB, 3 views)
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Old   November 10, 2023, 01:47
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You have already asked this question in your other thread: Non-Equilibrium Condensing in CFX

Please do not duplicate post.

Please put any comments on this question on the other linked thread.
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