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Št. zadetkov: 6
Design and modelling of underground decay heat removal system for a district heating reactor
Brahim Dif, Juhani Vihavainen, Juhani Hyvärinen, Iztok Tiselj
Magistrsko delo
Oznake: thermal hydraulics;condensation;decay heat;non-condensable gas;TRACE;
Decay heat in fission reactors is a main concern from a safety perspective. Adequate removal of decay heat should be maintained under all circumstances to ensure reactor operability within safety limits and mitigating any undesirable consequences. This could be achieved by utilising passive safety w ...
Leto: 2021 Vir: Fakulteta za matematiko in fiziko (UL FMF)
Sensitivity analysis of the LMT-006 benchmark experiments with OpenMC
Nour Ali, Andrej Trkov, Juhani Hyvärinen
Magistrsko delo
Oznake: nuclear engineering;neutron transport;nuclear data;validation;sensitivity analysis;cross section perturbation;fission spectrum;neutron spectrum hardness;
The LEU-MET-THERM-006 (Low Enriched Uranium fissile material, METal physical form, THERMal spectrum, LMT-006 for short) series of experiments was carried out in 1969-1970 by the CEA (Commissariat á l'Energie Atomique), France in the experimental criticality facility of Valduc. The experiments are in ...
Leto: 2025 Vir: Fakulteta za matematiko in fiziko (UL FMF)
Functional chain analysis for a new built nuclear power plant
Abdelrahman Elbayoumi, Juhani Hyvärinen, Leon Cizelj, Juhani Vihavainen, Topi Tahvonen
Magistrsko delo
Oznake: functional chain analysis;safety function;defence-in-depth;nuclear safety;
Nuclear power plants (NPP) are well-known for their multidisciplinary character as well as the high degree of coupling and interaction between their elements. Consequently, regulatory bodies tend to induce a massive number of requirements to ensure the nuclear safety of the power plant, these requir ...
Leto: 2021 Vir: Fakulteta za matematiko in fiziko (UL FMF)
Analysis of the table top experiment run8.1 by means of a systems thermal-hydraulic code
Afra Bakhit, Juhani Hyvärinen, Iztok Tiselj, Marinus Potgieter, Juhani Vihavainen
Magistrsko delo
Oznake: jedrska tehnika;dvofazni tok;toplotni izmenjevalnik;jedrski reaktor MYRRHA;program Flownex;nuclear engineering;two-phase flow;heat exchanger;MYRRHA reactor;Flownex;
Accurate modeling of thermal-hydraulic behavior is crucial during the design phase and for safety studies of nuclear reactor components. Precise models help avoid the need for overly conservative design margins, thereby reducing costs. Additionally, accurate transient behavior models are vital for u ...
Leto: 2024 Vir: Fakulteta za matematiko in fiziko (UL FMF)
Simulation of post-LOCA heat transfer in nuclear fuel bundle
Mohamed Hisham Ibrahim Hussein, Boštjan Končar, Juhani Hyvärinen, Milan Tesinsky
Magistrsko delo
Oznake: nuclear engineering;light water reactors;nuclear fuel;thermal hydraulics;Loss of Coolant Accident;safety analysis;
Thermal hydraulic analysis is essential for ensuring safety in the nuclear industry, requiring reliable codes to predict reactor core behavior under both normal and accident conditions. This thesis examines the sub-channel code Coolant-boiling in Rod Arrays- Two Fluids (CTF), to simulate the top re ...
Leto: 2024 Vir: Fakulteta za matematiko in fiziko (UL FMF)
ǂThe ǂSARENA Programme: Master's degree studies in nuclear engineering combining different educational and cultural environments
Ivo Kljenak, Abdesselam Abdelouas, Manon Desmytter, Francisco Javier Elorza Tenreiro, Eduardo Gallego, Andreas Hartnack, Christoph Hartnack, Juhani Hyvärinen, Juhani Vihavainen, Iztok Tiselj
Izvirni znanstveni članek
Oznake: jedrska tehnika;magistrski študij;SARENA;nuclear engineering;Master's degree studies;
ǂThe ǂSARENA Programme: Master's degree studies in nuclear engineering combining different educational and cultural environments
Leto: 2024 Vir: Institut Jožef Stefan (IJS)
Št. zadetkov: 6
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