XiaoMao

Recently, I have build a model by tough2 I want to simulate a case that described the geothermal fluid inject to fracture rock. The fluid temperature is about 190~280 ℃， and the rate is about 3E-5 kg/s; How can i determine the enthalpy if I use INJECTION? I have tried many enthalpies, some will lead to model abnormal, and some only last a low temperature. Thanks