chhotelal prajapati

Dear Rob, I am working on a drying mechanism, such as moisture transport in the form of vapor from solid to air with TFM in Eulier-Eulier. In this case, I applied TFM in the E-E model and also applied UDS for the moisture source, and UDF for the moisture Inlet, update moisture content, and energy source term. but the problem is when the initialized the problem always error occurs:  F1 process could not be started. I don't what is happening. Do you have solution for it. or other method to do that process such as species transport with E-E model.