A Model for Droplet Entrainment Rate in Horizontal Stratified Flow
NURETH-14 - 2011 September 25-30

Presented at:
2011 September 25-30
Toronto, Canada
Session Title:
A1-3 Boiling and Condensation Fundamentals

François Henry (Université catholique de Louvain)
Yann Bartosiewicz (Université catholique de Louvain)
Valette Michel (CEA/DEN/DER/SSTH)


This work proposes an original approach for modeling the entrainment of droplets in a horizontal

stratified two-phase wavy flows. This mechanistic model is based on the ripple-waves

breakout and entrainment phenomenon by estimating the liquid mass pulled off the wave crests

during their fragmentation. The paper presents the modeling procedure for estimating the wavelength

of these ripples and the related entrained liquid volume. In regards to these parameters,

it is shown that a relatively simple methodology can be obtained to ease the implementation in

a system code. This work aims at substituting the current existing empirical correlations in the

system code CATHARE 3 by using a flowfield for a liquid dispersed phase.

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