Extension of nodal diffusion solver of Ants to hexagonal geometry

Research output: Contribution to conferenceConference AbstractScientific

Abstract

The development of a new computational framework for core multi-physics problems, called Kraken, has been started at VTT Technical Research Centre of Finland Ltd. The framework consists of modular neutronics, thermal hydraulics and thermal mechanics solvers, and is based on the use of continuous-energy Monte Carlo reactor physics program Serpent. Ants is a new reduced order nodal neutronics program developed as a part of Kraken. The published methodology and first results of Ants has previously been limited to rectangular geometry steady state multigroup diffusion solutions.

This work describes the solution methodology of Ants extended to hexagonal geometry steady state diffusion solutions. The first results using various two-dimensional and three-dimensional hexagonal geometry numerical benchmarks are presented. These benchmarks include the AER-FCM-001 and AER-FCM-101 three-dimensional VVER-440 and VVER-1000 mathematical benchmarks. The obtained effective multiplication factors of all considered benchmarks are within 18 pcm and the RMS relative assembly power differences are within 0.4 % of the reference solutions.
Original languageEnglish
Publication statusPublished - 2018
MoE publication typeNot Eligible
Event28th Symposium of AER on VVER Reactor Physics and Reactor Safety - Olomouc, Czech Republic
Duration: 8 Oct 201812 Oct 2018

Conference

Conference28th Symposium of AER on VVER Reactor Physics and Reactor Safety
CountryCzech Republic
CityOlomouc
Period8/10/1812/10/18

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Geometry
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Rintala, A., & Sahlberg, V. (2018). Extension of nodal diffusion solver of Ants to hexagonal geometry. Abstract from 28th Symposium of AER on VVER Reactor Physics and Reactor Safety, Olomouc, Czech Republic.
Rintala, Antti ; Sahlberg, Ville. / Extension of nodal diffusion solver of Ants to hexagonal geometry. Abstract from 28th Symposium of AER on VVER Reactor Physics and Reactor Safety, Olomouc, Czech Republic.
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title = "Extension of nodal diffusion solver of Ants to hexagonal geometry",
abstract = "The development of a new computational framework for core multi-physics problems, called Kraken, has been started at VTT Technical Research Centre of Finland Ltd. The framework consists of modular neutronics, thermal hydraulics and thermal mechanics solvers, and is based on the use of continuous-energy Monte Carlo reactor physics program Serpent. Ants is a new reduced order nodal neutronics program developed as a part of Kraken. The published methodology and first results of Ants has previously been limited to rectangular geometry steady state multigroup diffusion solutions.This work describes the solution methodology of Ants extended to hexagonal geometry steady state diffusion solutions. The first results using various two-dimensional and three-dimensional hexagonal geometry numerical benchmarks are presented. These benchmarks include the AER-FCM-001 and AER-FCM-101 three-dimensional VVER-440 and VVER-1000 mathematical benchmarks. The obtained effective multiplication factors of all considered benchmarks are within 18 pcm and the RMS relative assembly power differences are within 0.4 {\%} of the reference solutions.",
author = "Antti Rintala and Ville Sahlberg",
year = "2018",
language = "English",
note = "28th Symposium of AER on VVER Reactor Physics and Reactor Safety ; Conference date: 08-10-2018 Through 12-10-2018",

}

Rintala, A & Sahlberg, V 2018, 'Extension of nodal diffusion solver of Ants to hexagonal geometry' 28th Symposium of AER on VVER Reactor Physics and Reactor Safety, Olomouc, Czech Republic, 8/10/18 - 12/10/18, .

Extension of nodal diffusion solver of Ants to hexagonal geometry. / Rintala, Antti; Sahlberg, Ville.

2018. Abstract from 28th Symposium of AER on VVER Reactor Physics and Reactor Safety, Olomouc, Czech Republic.

Research output: Contribution to conferenceConference AbstractScientific

TY - CONF

T1 - Extension of nodal diffusion solver of Ants to hexagonal geometry

AU - Rintala, Antti

AU - Sahlberg, Ville

PY - 2018

Y1 - 2018

N2 - The development of a new computational framework for core multi-physics problems, called Kraken, has been started at VTT Technical Research Centre of Finland Ltd. The framework consists of modular neutronics, thermal hydraulics and thermal mechanics solvers, and is based on the use of continuous-energy Monte Carlo reactor physics program Serpent. Ants is a new reduced order nodal neutronics program developed as a part of Kraken. The published methodology and first results of Ants has previously been limited to rectangular geometry steady state multigroup diffusion solutions.This work describes the solution methodology of Ants extended to hexagonal geometry steady state diffusion solutions. The first results using various two-dimensional and three-dimensional hexagonal geometry numerical benchmarks are presented. These benchmarks include the AER-FCM-001 and AER-FCM-101 three-dimensional VVER-440 and VVER-1000 mathematical benchmarks. The obtained effective multiplication factors of all considered benchmarks are within 18 pcm and the RMS relative assembly power differences are within 0.4 % of the reference solutions.

AB - The development of a new computational framework for core multi-physics problems, called Kraken, has been started at VTT Technical Research Centre of Finland Ltd. The framework consists of modular neutronics, thermal hydraulics and thermal mechanics solvers, and is based on the use of continuous-energy Monte Carlo reactor physics program Serpent. Ants is a new reduced order nodal neutronics program developed as a part of Kraken. The published methodology and first results of Ants has previously been limited to rectangular geometry steady state multigroup diffusion solutions.This work describes the solution methodology of Ants extended to hexagonal geometry steady state diffusion solutions. The first results using various two-dimensional and three-dimensional hexagonal geometry numerical benchmarks are presented. These benchmarks include the AER-FCM-001 and AER-FCM-101 three-dimensional VVER-440 and VVER-1000 mathematical benchmarks. The obtained effective multiplication factors of all considered benchmarks are within 18 pcm and the RMS relative assembly power differences are within 0.4 % of the reference solutions.

M3 - Conference Abstract

ER -

Rintala A, Sahlberg V. Extension of nodal diffusion solver of Ants to hexagonal geometry. 2018. Abstract from 28th Symposium of AER on VVER Reactor Physics and Reactor Safety, Olomouc, Czech Republic.