Sökning: "POLCA"

Visar resultat 1 - 5 av 11 uppsatser innehållade ordet POLCA.

  1. 1. Machine Learning model applied to Reactor Dynamics

    Master-uppsats, KTH/Fysik

    Författare :Dionysios Dimitrios Nikitopoulos; [2023]
    Nyckelord :Master Thesis; Machine Learning; stability; Energy distribution profiles; Prediction; frequency; decay ratio; Data processing; POLCA-T; Pytorch; testing data; RMSE. ii;

    Sammanfattning : This project’s idea revolved around utilizing the most recent techniques in MachineLearning, Neural Networks, and Data processing to construct a model to be used asa tool to determine stability during core design work. This goal will be achieved bycollecting distribution profiles describing the core state from different steady statesin five burn-up cycles in a reactor to serve as the dataset for training the model. LÄS MER

  3. 2. 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

  4. 3. Compaction of Lattice Data : Improved Efficiency in Nuclear Core Calculation

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för fysik och astronomi

    Författare :Hanna Lundgren; [2017]
    Nyckelord :nuclear physics; nuclear core calculation; PHOENIX; POLCA; Westinghouse; cross sections;

    Sammanfattning : Westinghouse Electric Sweden AB’s three-dimensional reactor core simulation program POLCA uses a large number of tables containing various fuel dependent data, such as cross sections, pin power maps with power distribution etc. POLCA uses quadratic and linear interpolation to extract the values needed for the simulation. LÄS MER

  5. 4. Valdiation of the Critical Flow Models in POLCA-T

    Master-uppsats, KTH/Fysik

    Författare :Jonathan Wäng; [2015]
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  7. 5. Valdiation of th Critical Flow Models in POLCA-T

    Master-uppsats, KTH/Fysik

    Författare :Jonathan Wäng; [2015]
    Nyckelord :;

    Sammanfattning : .... LÄS MER