U vapour , v vapour , Vf (volume fraction) is 0 till solution is converged in Nucleate Boiling.

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  • Last Post 08 March 2019
mrmogan posted this 28 January 2019

Hai Can anyone explain why vapour is not formed in Nucleate flow Boiling.

See attachment of calculation.

Regards mrmogan

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abenhadj posted this 28 January 2019

Screenshots Please.

Best regards,

Amine

mrmogan posted this 14 February 2019

Sir screen shot is attached.

abenhadj posted this 14 February 2019

WHERE 

Best regards,

Amine

mrmogan posted this 25 February 2019

sir

here attached.

FLUENT SOLUTION FOR NUCLEATE BOILING FLOW

https://drive.google.com/file/d/134Yg46ZfAcLzJ1VGWmtwshaXTlFU8HqR/view?usp=sharing

regards

 

mrmogan

 

mrmogan posted this 25 February 2019

sir

When i Enable turbulence dispersion force in nucleate boiling model by following TUI command :
/de fine/models/viscous/multiphase-turbulence/multiphase-options yes

it shows invalid command ( image attached in google drive link : Invalid command)

how to enable turbulence dispersion force ?

regards

mrmogan

abenhadj posted this 25 February 2019

Make it from GUI under Phase interaction.

Best regards,

Amine

mrmogan posted this 08 March 2019

Sir

thanks.

There are below four models in Turbulent Dispersion menu under phase interaction. Which one to select for Nucleate flow boiling?

 

 

Also There are below two models in Turbulence Interaction menu under phase interaction. Which one to select for Nucleate flow boiling?

Troshko-Hassan Model .Sato Model .

 

regards

mrmogan

abenhadj posted this 08 March 2019

Do not post your question several times: learn to be patient. Sometimes posts require approval from Admins.

 

For dispersion without lost of generality I will recommend Burns or Simonin.

For turbulence interaction: this is not easy anything to recommend. I generally stick to Sato as it is simple. The source term models might be though used.

 

If you do not have any validation data then it would be hard to quantify the best models here.

Best regards,

Amine

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