Bases for dust mobilization modelling in the light of STARDUST experiments

CFD modelling of particle resuspension in a toroidal geometry resulting from airflows during a loss of vacuum accident (LOVA)

“…The "Rock'n'Roll" model, developed by Reeks & Hall [14], on the basis of a so-called "RRH" model developed by Reeks et al [18], is based on the assumption of a particle deposited on a rough surface which is resuspended by the airflow turbulence effect as shown in This competition between adhesion and airflow forces can be expressed by equation (8). a 2FL + rpFD>afa (8) Where, a is the distance between the two irregularities on which the particle rests and rp the particle radius. Dividing the inequality (8) by a, leads to:…”

“…The mobility of these particles and their containment in the event of a LOVA have become, over time, a major topic for assessing the safety of ITER [6] [7] [8] [9] [10].…”

Implementation and validation of a resuspension model in MELCOR 1.8.6 for fusion applications

“…The measurement of the mass mobilized is performed weighing the tray before and after each test. Two different pressurization rates were investigated: 300 Pa/s and 3,000 Pa/s [17]. Air can be injected through two lines, one injecting along the cylinder axis (valve A), and the other one injecting near to the bottom of the tank (valve B).…”

Dust mobilization experiments in the context of the fusion plants—STARDUST facility

“…The simulation of the STARDUST tests by means of the ECART code [3,4], has been performed making use of an integrated run (thermal-hydraulic module coupled with the aerosol module). The velocity fields inside the tank were estimated by preliminary computational fluid dynamic (CFD) calculations using the FLUENT ® code [5].…”