Rob
Ansys Employee
Mass flow is something you need to determine BEFORE you open the software, that will be in kg/s or you can calculate it from velocity & density. You then need to convert that into kg/m3/s for the source term (divide by the source cell zone volume) and enter that number into the mass & species sources. nAs an aside, I work UK office hours and typically am on here around lunchtime depending on other commitments. We will get to you but bumping threads isn't going to speed it up. n