Inverted annular region

Inverted Annular Region. The application of two-fluid models to the prediction of heat transfer in the inverted annular film-boiling regime (see Fig. 15.137) has been developed by a number of authors, including Analytis and Yadigaroglu [338] and Hammouda et al. [339], These models are quite complex and sophisticated and involve ... 

In the inverted annular flow region, it is assumed that the vapor generation near the wall occurs fast enough that the velocities of the two phases are about equal, or S = (uGluL) 1. 

J.G. Denten and M. Ishii, Flow Visualization Study of Post Critical Heat Flux Region for Inverted Bubbly, Slug and Annular Flow Regime, NUREG/CR-5171, ANL-88-27, (1988). 

---