Sökning: "Westinghouse"

Visar resultat 1 - 5 av 27 uppsatser innehållade ordet Westinghouse.

  1. 1. Development of a Nordic BWR plant model in APROS and design of a power controller using the control rods

    Master-uppsats, KTH/Fysik

    Författare :Jonathan Al-Ani; [2021]
    Nyckelord :APROS; Dynamic process simulation; System code; Nuclear reactor; nuclear power; BWR; Boiling Water Reactor; closed cycle; steam cycle; one-dimensional flow; Westinghouse; control rods; APROS; Dynamisk processimulering; Beräkningsmodell; Kärnkraft; BWR; Kokvattenreaktor; ångcykel; en-dimensionell flödesmodell; Westinghouse; kontrollstavar;

    Sammanfattning : In this master thesis an input-model of a Nordic BWR power plant has been developed in APROS. The plant model contains key systems and major thermohydraulic components of the steam cycle, including I&C systems (i.e. power, pressure, level and flow controls). LÄS MER

  2. 2. Validation of the Westinghouse BWR nodal core simulator POLCA8 against Serpent2 reference results

    Master-uppsats, KTH/Fysik

    Författare :Mathilde Gaillard; [2021]
    Nyckelord :Nodal Core Analysis; Monte Carlo Methods; CBH Effects; Nodal kärnanalys; Monte Carlo-metoder; CBH-effekter;

    Sammanfattning : When a new nodal core simulator is developed, like all other simulators, it must go through an extensive verification and validation effort where, in the first stage, it will be tested against appropriate reference tools in various theoretical benchmark problems. The series of tests consist of comparing several geometries, from the simplest to the most complex, by simulating them with the nodal core simulator developed and with some higher order solver representing the reference solution, in this case on the Serpent2 Monte Carlo transport code. LÄS MER

  3. 3. Improved methodology for postulated fuel handling accident

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Institutionen för byggvetenskaper; Lunds universitet/Hållfasthetslära

    Författare :Max Fagerberg; [2020]
    Nyckelord :ANSYS LS-DYNA; FEM; nuclear fuel; solid mechanics; Technology and Engineering;

    Sammanfattning : This report presents a suggestion of an improved method for evaluation of a fuel handling accidents. Using a 3D FE-model and ANSYS LS-DYNA EXT the structural analysis is carried out. Importing geometry from SpaceClaim and simplifying it creates the geometry used in this analysis. LÄS MER

  4. 4. Joint Calibration of a Cladding Oxidation and a Hydrogen Pick-up Model for Westinghouse Electric Sweden AB

    Uppsats för yrkesexamina på avancerad nivå,

    Författare :Joakim Nyman; [2020]
    Nyckelord :Marcov Chain Monte Carlo; Surrogate Model; Gaussian Process; Marginal Likelihood Optimisation; The Margin Method; Dakota; Transuranus; Calibration; Machine Learning; Software Coupling;

    Sammanfattning : Knowledge regarding a nuclear power plants potential and limitations is of utmost importance when working in the nuclear field. One way to extend the knowledge is using fuel performance codes that to its best ability mimics the real-world phenomena. LÄS MER

  5. 5. Application of sub-channel thermal-hydraulic analysis to core calculations with POLCA8 and VIPRE-W

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Tillämpad kärnfysik

    Författare :Larisa Castellanos Alvarez; [2019]
    Nyckelord :nuclear physics; westinghouse; POLCA; Vipre; BWR;

    Sammanfattning : This report investigates the steps of a one-way coupling between two simulation codes developed by Wesinghouse Electric Sweden AB. The Westinghouse POLCA8 is a three dimensional steady-state diffusion theory code used for simulating the neutronic, thermal and hydraulic behavior of a reactor core. LÄS MER