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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)
Boiling instabilities in helical coil steam generator
Debasish Chowdhury, Juhani Vihavainen, Iztok Tiselj
Magistrsko delo
Oznake: jedrska tehnika;uparjalnik s spiralnimi cevmi;mali modularni reaktorji;nestabilnost pretoka;nuclear engineering;helical coil;steam generator;small modular reactors;instabilities;
Helically coiled steam generator is an essential part of current generation small modular reactors like NuScale due to its compactness and high heat transfer area. Instabilities due to boiling water inside helically coiled tubes is an important research question due to its im-portance for the steady ...
Leto: 2022 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)
Loss of feedwater accident simulation in VVER 1000 using APROS
Magdalena Małgorzata Bawołek, Juhani Vihavainen, Iztok Tiselj
Magistrsko delo
Oznake: jedrska tehnika;jedrski reaktorji;nesreče;izguba napajalne vode;deterministična varnostna analiza;horizontalni uparjalnik;VVER1000;nuclear engineering;nuclear reactors;accidents;loss of normal feedwater;deterministic safety analysis;horizontal steam generator;
The purpose of this thesis was to develop a model of the VVER1000 reactor in APROS, sufficient for Loss of Normal Feedwater (LONF) accident with combined Loos of Offsite Power (LOOP) analysis. The Loss of Normal Feedwater analysis is classified as an Anticipated Operational Occurrence (AOO) and as s ...
Leto: 2023 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;
Within the SARENA programme, students from different parts of the world have the opportunity to obtain a master's degree in nuclear engineering by participating in a two-year curriculum combining academic programs in France, Spain, Finland and Slovenia (depending on the selected study track). The co ...
Leto: 2024 Vir: Fakulteta za matematiko in fiziko (UL FMF)
Št. zadetkov: 6
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