A5079588336- Nuclear reactor physics and engineering
- Fusion materials and technologies
- Nuclear Materials and Properties
- Nuclear and radioactivity studies
- Particle accelerators and beam dynamics
- Nuclear Physics and Applications
- Magnetic confinement fusion research
- Superconducting Materials and Applications
- Radiation Detection and Scintillator Technologies
- Muon and positron interactions and applications
- Spacecraft and Cryogenic Technologies
- Silicon Carbide Semiconductor Technologies
- Graphite, nuclear technology, radiation studies
- Cyclone Separators and Fluid Dynamics
- Nuclear Engineering Thermal-Hydraulics
- Technology Assessment and Management
- High-Velocity Impact and Material Behavior
- Heat Transfer and Boiling Studies
- Energetic Materials and Combustion
University of Palermo
2019-2024
The Water-Cooled Lead–Lithium Breeding Blanket (WCLL BB) is one of the two blanket concept candidates to become driver EU-DEMO reactor. design was enacted with a holistic approach. influence that neutronics, thermal-hydraulics (TH), thermo-mechanics (TM) and magneto-hydro-dynamics (MHD) may have on were considered at same time. This new approach allowed for team create WCLL BB layout able comply different foreseen requirements in terms integration, tritium self-sufficiency, TH TM needs. In...
The water-cooled lead lithium breeding blanket (WCLL BB) is one of two BB candidate concepts to be chosen as the driver EU-DEMO fusion reactor. Research activities carried out in past decade, under umbrella EUROfusion consortium, have allowed a quite advanced reactor architecture achieved. Moreover, significant efforts been made order develop WCLL pre-conceptual design following holistic approach, identifying interfaces between components and systems while respecting system engineering...
Within the framework of EUROfusion research activities on DEMO Water-Cooled Lithium Lead (WCLL) Breeding Blanket (BB) design, a study was performed to preliminarily optimize, from thermal point view, WCLL Central Outboard (COB) segment in order investigate its structural behaviour under realistic field. In particular, analyses optimize Double Walled Tubes and Segment Box cooling channels’ geometric configurations along poloidal extension COB segment, obtain spatial temperature distribution...
The WCLL Breeding Blanket of DEMO and the Test Module (TBM) ITER require accurate R&D activities, i.e., concept validation at a relevant scale safety demonstrations. In view this, strategic objective Water Loop (WL) facility, belonging to W-HYDRA experimental platform planned C.R. Brasimone ENEA, is twofold: conduct activities for BB validate design performances increase technical maturity level selection phases, as well support System program. Basically, facility will have capability...
The EU-DEMO divertor target cooling circuit is equipped with Swirl Tape (ST) inserts to improve its thermo-hydraulic performance in terms of heat transfer coefficient and critical flux. Due the presence STs, accurate 3D CFD-based thermofluid-dynamic assessments targets require a high computational cost laborious pre-processing modelling effort. To this end, cost-efficient CFD simulation technique based on an equivalent porous medium concept, namely Virtual (VST) approach, has been developed....
As part of the activities performed by DEMO Central Team (DCT) to study alternative configurations Water-Cooled Lead Lithium (WCLL) Breeding Blanket (BB), overcome open issues that emerged at end Pre-Conceptual Design phase, a new concept, WCLL BB "double bundle" (db), was developed. This concept adopts an array db tubes poloidally distributed inside breeding zone, mimicking arrangement heat exchangers. These are coaxial pipes gap between which is filled with PbBi (or alternatively gas and...
Within the framework of EUROfusion research and development activities, Water-Cooled Lithium Lead (WCLL) Breeding Blanket (BB) is one two candidates to be chosen as driver blanket for European DEMO nuclear fusion reactor. Hence, an intense work currently ongoing throughout EU develop a robust conceptual design able fulfil requirements selected at end pre-conceptual phase. In this work, thermo-mechanical analysis update top cap (TC) region WCLL Central Out-board (COB) segment presented. The...
In the EU, Water-Cooled Lithium Lead (WCLL) Breeding Blanket (BB) concept is one of candidates for design DEMO reactor. From past campaign analysis emerged that thermal-induced stress led to failure in verification RCC-MRx structural criteria. Hence, this paper classic conceptual approach, based on a pure FEM thermal and analysis, compared coupled thermofluid-dynamic/structural one. Even though approach requires tremendous modelling effort computational burden, it surely allows determining...
One of the crucial steps in European Roadmap to realisation fusion energy is design and construction Demo-orientated NEutron Source (DONES) facility. DONES a fusion-like neutron source, based on International Fusion Materials Irradiation Facility (IFMIF) concept, aimed at qualifying testing materials be used reactors. The Target System (TSY) system as it component where interactions between deuterons liquid lithium target, flowing solid surface (i.e. Back Plate), take place produce neutrons...
The Water-Cooled Lead Lithium (WCLL) and the Helium-Cooled Pebble Bed (HCPB) Breeding Blanket (BB) concepts are two candidates currently poised to be chosen as driver blanket for EU DEMO reactor. Nevertheless, new variants emerging with aim of overtaking potential showstoppers arisen during WCLL HCPB BB pre-conceptual design phase. Then, an intense campaign exploratory studies has been launched in investigate performances such alternative concepts. Among them, Lead-Ceramic Breeder (WLCB)...
Within the framework of European Roadmap to realization fusion energy, a strong international cooperation is ongoing develop Breeding Blanket (BB) system for EU-DEMO reactor. Although it still be decided whether DEMO in-vessel components should perform any safety function, pursuing robust blanket concepts able handle upset and accidental loading conditions has been always seen as good practice in reactor engineering enhance inherent plant performances. Amongst several classes events that...
The Water-Cooled Lead Lithium (WCLL) Breeding Blanket (BB) is one of the two BB concepts candidate to be selected as driver blanket for EU-DEMO fusion reactor. In this regards, development a sound architecture WCLL Central Outboard (COB) Segment, ensuring fulfilment thermal and structural design requirements, main goals EUROfusion consortium. To purpose, an exploratory research campaign has been launched preliminarily investigate thermo-mechanical performances Bottom Cap (BC) region COB...
The design of a breeding blanket system (BB) which reliably fulfils the prescribed requirements is pivotal for construction EU DEMO fusion reactor. For this reason, BB conceptual activities require tighter interaction with plasma physics modelling, so to employ relevant boundary conditions compare, and then down-select, alternatives. preliminary thermo-mechanical study herein reported highlights importance assess in deep performance during operational transients. In particular, analyses...
The development of a sound conceptual design the Water-Cooled Lead Lithium Breeding Blanket (WCLL BB) is pivotal to make breakthrough towards selection driver blanket concept for EU-DEMO. To achieve this goal, an intense research campaign has been performed at University Palermo, in cooperation with ENEA Brasimone, under umbrella EUROfusion. In paper, structural analyses different poloidal regions WCLL BB Central Outboard (COB) segment are reported. particular, starting from results...
The development of a sound conceptual design for the Water-Cooled Lead Lithium Breeding Blanket (WCLL BB) is pivotal to make breakthrough towards selection driver blanket concept EU-DEMO. To this goal, research campaign has been launched over last years at University Palermo, in close cooperation with ENEA Brasimone, under umbrella EUROfusion. In frame, analysis thermo-mechanical behaviour WCLL Left Outboard (LOB) segment being performed. first phase, assessment segment's overall structural...