Victoria Hamtiaux
PhD student
Ir. at UCL in 2019

Main project: Natural convection and boiling in domains with immersed porous structures subjected to internal heating
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):
Fluid mechanics

nuclear thermal-hydraulics
two-phase flows

Research group(s): TFL

Recent publications

See complete list of publications

Conference Papers

1. Hamtiaux, Victoria; Papalexandris, Miltiadis. Numerical simulation of thermal convection over anfd through an internally heat porous medium. In: Proceedings of the 19th International Topical Meeting on Nuclear Reactor Thermal Hydraulics NURETH19, American Nuclear Society, 2022, 9789076971261 xxx.

2. Hamtiaux, Victoria; Papalexandris, Miltiadis. Numerical simulations of turbulent thermal convection in mixed pure fluid – porous domains. 2021 xxx.

3. Hamtiaux, Victoria; Papalexandris, Miltiadis. Modelling and simulation of natural convection in cavities with immersed internally heated porous structures. 2020 xxx.