Everybody is good, for the first time to ask questions are less likely to be ~ I internal refrigerant in electronic expansion valve throttling expansion occurs gas-liquid phase change process, the refrigerant R290 refrigerants, this is a kind of pure refrigerants, and then change the UDF model from the water evaporation condensation model, import into fluent no problem, but to initialize a fatal error, refer to others of the same error could be the UDF writing content, please leaders to help see ~ ~
# key lies in whether I R290 gas or R290 saturation temperature corresponding to the saturated vapor pressure of liquid is the same formula, I see others do mixed refrigerant R410a, the saturation temperature corresponding to the saturated vapor pressure of the gas is a formula, saturation temperature corresponding to the saturated vapor pressure of liquid is another formula, and I'm here, is the same formula, (I check the pressure on the refprop corresponding saturation temperature, regardless of the gas liquid, is one to one correspondence, but mixed refrigerants to check each pressure corresponding to the saturation temperature, divided into gas and liquid temperature, I don't know if there is problem)
# and latent heat of vaporization, pure refrigerants R290 can check it through Refprop the saturation temperature corresponding to the latent heat of gasification of but do not check mixed refrigerants, but others make to still have mixed refrigerant latent heat of vaporization of saturation temperature formula
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Anyhow want to consultation you gas mass source term and quality source term in the saturated liquid evaporation temperature changing with pressure formula of how to determine the ah [face] monkey2:019 PNG [/face] [face] monkey2:019 PNG [/face]

Save the children ~ want to graduate, this part of the simulation of taking a chapter of thesis ~

Here is my udf file