Conveners
Day 2- Research Pitch Competition - I
- Iztok Tiselj (Jozef Stefan Institute)
- Eleonora Skrzypek (National Centre for Nuclear Research)
The detection of corrosion and cracks in nuclear power plants is a critical task that requires accurate and efficient monitoring systems. Traditional inspection methods can be time-consuming and may not be able to detect defects in hard-to-reach areas. In recent years, machine learning and deep learning techniques have emerged as promising alternatives for the detection of corrosion and cracks...
Radiation detection systems are essential for upholding nuclear security and safety. The main objective of this study is to design and develop a new radiation detection system that can locate the position of a radioactive source using Geiger-Muller (GM) detectors. Three GM detectors are utilized in this system, and their relative angles are known. The detectors collect data on radiation...
Characterizing and modeling multi-phase flow is a complicated scientific and technical phenomenon represented by a variety of interrelated elements. Yet, the introduction of dimensionless numbers used to grasp gas-liquid flow is a significant step in controlling and improving the multi-phase flow area. Such as the SL (Slippage number), a dimensionless number defined as the ratio of the...
Severe accidents (SA) mitigation strategy in Nordic Boiling Water Reactors (BWRs) may lead to ex-vessel steam explosion (SE) scenario. The molten corium falls from the reactor vessel lower head that failed due to thermal and mechanical loads into a pool of water to form a coolable debris bed after fragmenting and quenching the corium melt. Ultimately, preventing containment failure and the...
The integrity of the reactor pressure vessel (RPV) is of the utmost importance in nuclear reactor safety. One of the cases that need to be studied more thoroughly is the formation of a corium pool which could happen during severe accident scenarios. The melted core is a mixture of multiple melted materials, giving the fluid a unique flow structure. Additionally, the presence of...
Due to their high specific heat, low viscosity, and good diffusivity, supercritical fluids have the potential to be ideal coolants. In addition, the supercritical heat transfer properties are shown to result in up to 45% efficiency in nuclear power generation, which operates nearly at 550°C. However, understanding the heat transfer for fluids under supercritical conditions has been a...
Turbulent heat transfer is an extremely complex phenomenon and is critical in scientific and industrial applications. It becomes much more challenging in a buoyancy-influenced flow regime, particularly for non-unity Prandtl number (Pr) fluids. In this article, an effort has been put forward to assess the prediction capabilities of different Reynolds-Averaged Navier-Stokes (RANS) based...
As demonstrated in the Fukushima catastrophe, a malfunction of a nuclear power plant may result in the release of elevated quantities of noble gases, I-131, and Cs-137. Consequently, the key components of decision-support mechanisms for emergency readiness and response to hazardous nuclear incidents entail the evaluation of the potential danger to the populace through the modeling of the...
Abstract – In this paper, computational fluid dynamics modeling techniques to simulate the bubble bursting process and its ability to simulate the production of droplets for different bubble sizes are presented. A closed chamber is filled with fluid and air with the presence of bubbles in the fluid. The rising bubble eventually floats on the free surface forming a thin cap with a typical...
