Members

IMMC

Victoria Hamtiaux
PhD student
Ir. at UCL in 2019
Contact

Main project: Convection naturelle et ébullition dans et autour de milieux poreux immergés et exposés à des sources de chaleur internes
Funding: FRIA
Supervisor(s): Miltiadis Papalexandris

My doctoral research propose to advance the state-of-the-art in the modelling and simulation of natural convection in domains with immersed porous structures. Such flows are encountered in numerous natural phenomena (wind through urban areas, forest fires, and others) and technological applications (rapid heat-transfer devices, spent-fuel pools of nuclear power stations etc.) The motivation for my study comes from the need for improved understanding of convection and boiling phenomena that occur during a Loss of Cooling Accident (LOCA) in spent fuel pools of nuclear power stations; with this regard, the storage racks of used fuel are macroscopically modeled as a porous medium.
Concerning the model, the solid matrix and the fluid are modeled as two distinct continuous media. A single-domain approach is used, i.e. a single set of equations is employed for the fluid that is valid in both porous and pure-fluid subdomains. The model also considers the phase change of water.

IMMC main research direction(s):
Energy
Fluid mechanics

Keywords:
nuclear thermal-hydraulics
turbulence
two-phase flows

Research group(s): TFL