Concepts of CFD modelling of boiling towards CHF

Boiling is an effective heat transfer mechanism which plays an important role in many industrial applications. The heat transfer capability is limited by the critical heat flux (CHF). The conditions for CFX have to be avoided in any cases. The simulation of these not yet fully understood phenomena has not yet reached an acceptable maturity.
The presentation describes actual concepts of simulation of boiling beginning with the heat flux partitioning approach. In recent developments the bubble size distribution was considered. Concepts for describing CHF are presented.