本程序应用于fluent数值模拟蒸发相变过程，由于fluent软件内不含所需的蒸发模型的方程，需要加入用户自定义（UDF编程）计算，改程序即为蒸发相变模拟编程。-This procedure is applied to the evaporation phase transition fluent numerical simulation process, since the evaporation model equations contain the desired fluent softw