Sökning: "Coupled Codes"

Visar resultat 1 - 5 av 15 uppsatser innehållade orden Coupled Codes.

  1. 1. Wind Turbine Recovery Forecasting using Survival Analysis

    Master-uppsats, Lunds universitet/Matematisk statistik

    Författare :Anton Palets; [2023]
    Nyckelord :Survival analysis; Recovery Forecast; Wind Turbine; Availability Forecast; AFT model; Aalen s model; Cox regression; Cox Proportional Hazards; Variation Processes; Mathematics and Statistics;

    Sammanfattning : The goal of this thesis is to present a methodology for predicting time until recovery of failed wind turbines. The necessity is motivated by the potential for more accurate wind energy export forecasts. The current approach rests entirely on having an expert examine the turbine and produce a time estimate. LÄS MER

  3. 2. Faster than Nyquist Signaling with Spatial Coupling

    Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknik

    Författare :Haoran Liu; Lingwei Zhang; [2022]
    Nyckelord :Technology and Engineering;

    Sammanfattning : The emergence of the Faster-Than-Nyquist signaling (FTN) technology has im- proved the tight spectrum resources by compressing the transmission interval between adjacent pulses. In a natural environment, data transmission via a wire- less medium and through multi-path, at a high data rate, the leakage of these paths among symbols can cause severe inter-symbol interference (ISI). LÄS MER

  4. 3. External Heat Transfer Coefficient Predictions on a Transonic Turbine Nozzle Guide Vane Using Computational Fluid Dynamics

    Master-uppsats, Linköpings universitet/Mekanisk värmeteori och strömningslära

    Författare :Daniel Enico; [2021]
    Nyckelord :CFD; LS89; transonic turbine; transition; transition model; turbulence decay; turbulence intensity; length scale; turbulence characteristics; HTC; external heat transfer coefficient; Steelant-Dick postulation;

    Sammanfattning : The high turbine inlet temperature of modern gas turbines poses a challenge to the material used in the turbine blading of the primary stages. Mechanical failure mechanisms are more pronounced at these high temperatures, setting the lifetime of the blade. LÄS MER

  5. 4. Calphad data handling for generic precipitation modelling coupled with FEM

    Master-uppsats, KTH/Materialvetenskap

    Författare :Hans-Henrik König; [2020]
    Nyckelord :CALPHAD; Precipitation; Pycalphad; CuCo; Integrated Computational Materials Engineering; CALPHAD; Utskiljningskinetik; Pycalphad; CuCo; Integrated Computational Materials Engineering;

    Sammanfattning : To enable a generic modelling tool for precipitation kinetics in non-homogeneous components, an efficient data-handling is required to facilitate the integration of models on different length scales, and to decrease the computational time and the use of resources. In this work an automated method to generate, curate and transform Calphad- based thermodynamic and kinetic data to facilitate precipitation models integrated in FEM codes is developed and tested. LÄS MER

  7. 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