Christophe Vallée

TL;DR: In this article, two horizontal channels with rectangular cross-section were built at Forschungszentrum Dresden-Rossendorf (FZD) for the investigation of air/water co-current flows, especially the slug behaviour, at atmospheric pressure and room temperature.

TL;DR: In this article, an Algebraic Interfacial Area Density (AIAD) model based on the implemented mixture model was introduced, which allows the detection of the morphological form of the two-phase flow and the corresponding switching via a blending function of each correlation from one object pair to another.

TL;DR: In this paper, an experimental investigation on the air/water counter-current two-phase flow in a horizontal rectangular channel connected to an inclined riser has been conducted, where a high-speed camera in the bended region of the hot leg, delivering a detailed view of the stratified interface as well as of dispersed structures like bubbles and droplets.

TL;DR: In this article, the effects of surface tension on flooding in counter-current two-phase flow in an inclined tube were investigated and an empirical correlation for flooding velocities was proposed that includes functional dependencies on surface tension and tube inclination.

TL;DR: In this article, the interfacial behavior during countercurrent two-phase flow of air-water and steam-water in a model of a PWR hot leg was studied quantitatively using digital image processing of a subsequent recorded video images of the experimental series obtained from the TOPFLOW facility, Helmholtz-Zentrum Dresden Rossendorf e.V. (HZDR), Dresden, Germany.