Pin power reconstruction method for rectangular geometry in nodal neutronics program Ants

    Research output: Contribution to conferenceConference articleScientificpeer-review

    Abstract

    VTT Technical Research Centre of Finland Ltd (VTT) is developing a new computational framework, called Kraken, for reactor core multi-physics problems. The framework consists of modular neutronics, thermal hydraulics and thermal mechanics solvers coupled together via a central multi-physics driver module. Ants is a novel reduced order nodal neutronics program developed as a part of Kraken. The published methodology and first results of Ants have previously been limited to steady state multigroup nodal diffusion solutions in both rectangular and hexagonal geometries.

    Ants solves the multigroup nodal neutronics using a hybrid of analytic function expansion nodal (AFEN) and flux expansion nodal (FENM) methods using a set of analytic basis functions for each mode flux. The pin powers are reconstructed by modulating the homogeneous pin cell fluxes obtained with direct integration of the homogeneous nodal fluxes over the pin cells with the heterogeneous group-dependent pin power form functions. The form functions are obtained from single assembly calculations using the continuous-energy Monte Carlo particle transport code Serpent 2.

    This work describes the Ants pin power reconstruction methodology for rectangular geometry. Initial comparisons with the heterogeneous solutions of Serpent are presented in simple configurations.
    Original languageEnglish
    Publication statusPublished - 2019
    MoE publication typeNot Eligible
    Event28th International Conference Nuclear Energy for New Europe, NENE 2019 - Grand Hotel Bernardin, Portorož, Slovenia
    Duration: 9 Sep 201912 Sep 2019
    Conference number: 28
    http://www.nss.si/nene2019/

    Conference

    Conference28th International Conference Nuclear Energy for New Europe, NENE 2019
    Abbreviated titleNENE 2019
    CountrySlovenia
    CityPortorož
    Period9/09/1912/09/19
    Internet address

    Fingerprint

    Fluxes
    Geometry
    Physics
    Reactor cores
    Mechanics
    Hydraulics
    Hot Temperature

    Cite this

    Rintala, A., & Sahlberg, V. (2019). Pin power reconstruction method for rectangular geometry in nodal neutronics program Ants. Paper presented at 28th International Conference Nuclear Energy for New Europe, NENE 2019, Portorož, Slovenia.
    Rintala, Antti ; Sahlberg, Ville. / Pin power reconstruction method for rectangular geometry in nodal neutronics program Ants. Paper presented at 28th International Conference Nuclear Energy for New Europe, NENE 2019, Portorož, Slovenia.
    @conference{8b41b4108abb4fa1b97d6f89355a2301,
    title = "Pin power reconstruction method for rectangular geometry in nodal neutronics program Ants",
    abstract = "VTT Technical Research Centre of Finland Ltd (VTT) is developing a new computational framework, called Kraken, for reactor core multi-physics problems. The framework consists of modular neutronics, thermal hydraulics and thermal mechanics solvers coupled together via a central multi-physics driver module. Ants is a novel reduced order nodal neutronics program developed as a part of Kraken. The published methodology and first results of Ants have previously been limited to steady state multigroup nodal diffusion solutions in both rectangular and hexagonal geometries.Ants solves the multigroup nodal neutronics using a hybrid of analytic function expansion nodal (AFEN) and flux expansion nodal (FENM) methods using a set of analytic basis functions for each mode flux. The pin powers are reconstructed by modulating the homogeneous pin cell fluxes obtained with direct integration of the homogeneous nodal fluxes over the pin cells with the heterogeneous group-dependent pin power form functions. The form functions are obtained from single assembly calculations using the continuous-energy Monte Carlo particle transport code Serpent 2.This work describes the Ants pin power reconstruction methodology for rectangular geometry. Initial comparisons with the heterogeneous solutions of Serpent are presented in simple configurations.",
    author = "Antti Rintala and Ville Sahlberg",
    year = "2019",
    language = "English",
    note = "28th International Conference Nuclear Energy for New Europe, NENE 2019, NENE 2019 ; Conference date: 09-09-2019 Through 12-09-2019",
    url = "http://www.nss.si/nene2019/",

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    Rintala, A & Sahlberg, V 2019, 'Pin power reconstruction method for rectangular geometry in nodal neutronics program Ants', Paper presented at 28th International Conference Nuclear Energy for New Europe, NENE 2019, Portorož, Slovenia, 9/09/19 - 12/09/19.

    Pin power reconstruction method for rectangular geometry in nodal neutronics program Ants. / Rintala, Antti; Sahlberg, Ville.

    2019. Paper presented at 28th International Conference Nuclear Energy for New Europe, NENE 2019, Portorož, Slovenia.

    Research output: Contribution to conferenceConference articleScientificpeer-review

    TY - CONF

    T1 - Pin power reconstruction method for rectangular geometry in nodal neutronics program Ants

    AU - Rintala, Antti

    AU - Sahlberg, Ville

    PY - 2019

    Y1 - 2019

    N2 - VTT Technical Research Centre of Finland Ltd (VTT) is developing a new computational framework, called Kraken, for reactor core multi-physics problems. The framework consists of modular neutronics, thermal hydraulics and thermal mechanics solvers coupled together via a central multi-physics driver module. Ants is a novel reduced order nodal neutronics program developed as a part of Kraken. The published methodology and first results of Ants have previously been limited to steady state multigroup nodal diffusion solutions in both rectangular and hexagonal geometries.Ants solves the multigroup nodal neutronics using a hybrid of analytic function expansion nodal (AFEN) and flux expansion nodal (FENM) methods using a set of analytic basis functions for each mode flux. The pin powers are reconstructed by modulating the homogeneous pin cell fluxes obtained with direct integration of the homogeneous nodal fluxes over the pin cells with the heterogeneous group-dependent pin power form functions. The form functions are obtained from single assembly calculations using the continuous-energy Monte Carlo particle transport code Serpent 2.This work describes the Ants pin power reconstruction methodology for rectangular geometry. Initial comparisons with the heterogeneous solutions of Serpent are presented in simple configurations.

    AB - VTT Technical Research Centre of Finland Ltd (VTT) is developing a new computational framework, called Kraken, for reactor core multi-physics problems. The framework consists of modular neutronics, thermal hydraulics and thermal mechanics solvers coupled together via a central multi-physics driver module. Ants is a novel reduced order nodal neutronics program developed as a part of Kraken. The published methodology and first results of Ants have previously been limited to steady state multigroup nodal diffusion solutions in both rectangular and hexagonal geometries.Ants solves the multigroup nodal neutronics using a hybrid of analytic function expansion nodal (AFEN) and flux expansion nodal (FENM) methods using a set of analytic basis functions for each mode flux. The pin powers are reconstructed by modulating the homogeneous pin cell fluxes obtained with direct integration of the homogeneous nodal fluxes over the pin cells with the heterogeneous group-dependent pin power form functions. The form functions are obtained from single assembly calculations using the continuous-energy Monte Carlo particle transport code Serpent 2.This work describes the Ants pin power reconstruction methodology for rectangular geometry. Initial comparisons with the heterogeneous solutions of Serpent are presented in simple configurations.

    M3 - Conference article

    ER -

    Rintala A, Sahlberg V. Pin power reconstruction method for rectangular geometry in nodal neutronics program Ants. 2019. Paper presented at 28th International Conference Nuclear Energy for New Europe, NENE 2019, Portorož, Slovenia.