5. Conclusions
A study on the heat-transfer characteristics of the VFT at normal
operating conditions was conducted and it could be seen that the
dimensionless parameters which affected the heat-transfer characteristics
of the VFT are Le/4Rh, Bo, Ja, Pr, qv/ql and Ku. The heat flux
of the VFT at a vertical position can be easily evaluated from the
following correlation of (5).