Results 31 to 40 of about 2,762 (182)

Verification and validation of isotope inventory prediction for back-end cycle management using two-step method

open access: yesNuclear Engineering and Technology, 2021
This paper presents the verification and validation (V&V) of a calculation module for isotope inventory prediction to control the back-end cycle of spent nuclear fuel (SNF).
Jaerim Jang   +5 more
doaj   +1 more source

Jacobian-free Newton Krylov two-node coarse mesh finite difference based on nodal expansion method

open access: yesNuclear Engineering and Technology, 2022
A Jacobian-Free Newton Krylov Two-Nodal Coarse Mesh Finite Difference algorithm based on Nodal Expansion Method (NEM_TNCMFD_JFNK) is successfully developed and proposed to solve the three-dimensional (3D) and multi-group reactor physics models.
Xiafeng Zhou
doaj   +1 more source

Validation of spent nuclear fuel decay heat calculation by a two-step method

open access: yesNuclear Engineering and Technology, 2021
In this paper, we validate the decay heat calculation capability via a two-step method to analyze spent nuclear fuel (SNF) discharged from pressurized water reactors (PWRs).
Jaerim Jang   +5 more
doaj   +1 more source

CORE DESIGN STUDY FOR A SMALL MODULAR BOILING WATER REACTOR [PDF]

open access: yesEPJ Web of Conferences, 2021
The hybrid Small Modular Boiling Water Reactor (SMBWR) is a new conceptual design of BWR-type SMR. The main features of SMBWR include a natural circulation loop in its coolant recirculation system and external superheaters system integrated into the ...
Wibisono Andhika Feri, Shwageraus Eugene
doaj   +1 more source

COUPLED TRANSIENT ANALYSIS OF A CORE WITH FUEL ASSEMBLY BOWING WITH A HYBRID CTF/DYN3D MODEL [PDF]

open access: yesEPJ Web of Conferences, 2021
Fuel assembly bowing is a known phenomenon observed in many PWR reactors all over the world. The phenomenon is relevant to safety as it can lead to increased water gaps between assemblies which results in higher pin peaking factors.
Périn Y, Travleev A, Zilly M
doaj   +1 more source

HIGH-PERFORMANCE MULTI-BATCH FUEL MANAGEMENTS FOR THE ADVANCED SOLUBLE-BORON-FREE ATOM CORE [PDF]

open access: yesEPJ Web of Conferences, 2021
The autonomous transportable on-demand reactor module (ATOM), a 450 MWth PWR-type small modular reactor (SMR), is under development at Korea Advanced Institute of Science and Technology (KAIST).
Nguyen Xuan Ha   +2 more
doaj   +1 more source

Critical Buckling Generation of TCA Benchmark by the B1 Theory-Augmented Monte Carlo Calculation and Estimation of Uncertainties

open access: yesEnergies, 2021
The Korea Atomic Energy Research Institute (KAERI) has developed the DeCART2D 2-dimensional (2D) method of characteristics (MOC) transport code and the MASTER nodal diffusion code and has established its own two-step procedure. For design code licensing,
Ho Jin Park, Jin Young Cho
doaj   +1 more source

Variational Nodal Method for Solving P1 Equation

open access: yesYuanzineng kexue jishu
Starting from the neutron transport equation, the diffusion equation is firstly derived via the P1 approximation, and subsequently the neutron diffusion equation is obtained through the diffusion approximation.
LI Yisong, LI Yunzhao, FAN Yuwen, QIN Junwei, WANG Songzhe
doaj   +1 more source

Comparison of ENDF/B-VII.1 and JEFF-3.2 in VVER-1000 operational data calculation

open access: yesEPJ Web of Conferences, 2017
Safe operation of a nuclear reactor requires an extensive calculational support. Operational data are determined by full-core calculations during the design phase of a fuel loading.
Frybort Jan
doaj   +1 more source

Full Core Pin-Level VVER-440 Simulation of a Rod Drop Experiment with the GPU-Based Monte Carlo Code GUARDYAN

open access: yesEnergies, 2022
Targeting ultimate fidelity reactor physics calculations the Dynamic Monte Carlo (DMC) method simulates reactor transients without resorting to static or quasistatic approximations.
David Legrady   +5 more
doaj   +1 more source

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