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June 29, 2022, 02:26
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Latent Heat Cannot be Less than zero
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#1 |
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New Member
Hellboy
Join Date: Apr 2018
Posts: 5
Rep Power: 8  |
Hi all, I'm practicing multiphase analysis in fluent,
my problem involves air, R134a liquid & R134a vapour I have assign the properties and while going through initialization i have noticed this error. Compute Node ID: 3 From-phase Domain ID: 1 To-phase Domain ID: 2 Cell Number: 0 Latent Heat: -294579 ERROR: Latent heat cannot be less than zero! could you please help me to understand and resolve this error |
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November 7, 2022, 03:20
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#2 |
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New Member
Sree Kumaran T
Join Date: Nov 2022
Posts: 4
Rep Power: 3 |
have u found out how to solve the error
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November 12, 2022, 10:25
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#3 |
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New Member
Hellboy
Join Date: Apr 2018
Posts: 5
Rep Power: 8 |
yes, it is solved
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November 12, 2022, 10:44
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#4 |
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New Member
Sree Kumaran T
Join Date: Nov 2022
Posts: 4
Rep Power: 3 |
Can u share how did u solve it please
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November 12, 2022, 10:54
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#5 |
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New Member
Hellboy
Join Date: Apr 2018
Posts: 5
Rep Power: 8 |
sure, in ansys it is suggested to consider latent heat for refrigerant in liquid material as zero
in ansys fluent, latent heat is calculated from standard state enthalpy of phase participating in mass exchange only enthalpy difference matters hvl(enthalpy total or vapour & liquid at ref temperature)= hv(vapour enthalpy)-hl(liquid enthalpy) at reference temperatures so it is better to consider liquid enthalpy as zero |
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November 12, 2022, 10:55
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#6 |
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New Member
Hellboy
Join Date: Apr 2018
Posts: 5
Rep Power: 8 |
it is better to use
Tref= Tsat hv, Tsat= hvl,Tsat |
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November 12, 2022, 11:08
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#7 |
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New Member
Sree Kumaran T
Join Date: Nov 2022
Posts: 4
Rep Power: 3 |
So in a evaporation condensation cycle should i put sse of water zero and air as it is
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March 27, 2023, 10:34
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#8 | |
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New Member
mohammed ibrahim
Join Date: May 2013
Posts: 3
Rep Power: 13 |
Quote:
Hello where can I find Tref and Tsat in fluent? Thank you |
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