LPG tank
Thiago
Member Posts: 2
Hi.
I am trying simulate a multiphase system ( pure liquefied propane) in a tank under heating using ANSYS FLUENT 2021R1. The tank doesn´t have flow in and flow out, it is closed. I Set 0.95 liquefied propane using Patch. But, ANSYS show me 2 error messages. I have tryed find the solution by myself but I coudnt.
The error messages are: 1- latent heat can´t be less than zero. 2- float point exception.
In my set up, I am using:
VOF+Lee, propane (gas SRK equation for density); two phases; phase 1 is gas; sharp; The material properties are the same as ANSYS database.
suface tension coefficient 0.004;
mass transfer- evaporation/condensation, 1 mechanism, frequency 0.1 (both);
The sataturation temperature I set a polinomial from a databook;
The liquid propane I created from propane (ansys data) and set a polinomial dependent of temperature for each properties (density, viscosity, thermal condutivity and specific heat). Those polinomials equations I got from a Chemical engineering databook. The other properties ( reference temperature, standard Enthalpy and mocecular weigth) I used the same as propane ansys database.
What am I doing wrong?
I aprecciate any help. Thanks in advance.
Answers
May be the pressure/temperature exceeded the critical value
As the liquid evaporates where does it go? Ie if the gas density can't vary with pressure and the total volume is fixed what will happen?
Rob and Yasser, thank you.
I could run my simulation.
But I have another question.
Can I set the saturation heat of vaporization dependent of pressure? If yes, how?
Thank you
What does the manual tell you?