Results 21 to 30 of about 12,741 (257)
Nuclear Engineering and Technology, 2020 A new task of using the Jacobian-Free-Newton-Krylov (JFNK) method for the PWR core transient simulations involving neutronics, thermal hydraulics and mechanics is conducted.
Qingming He +4 more
doaj +1 more source
Correlations in non-Hermitian systems and diagram techniques for the steady state
Physical Review Research, 2020 I construct a diagrammatic technique for non-Hermitian fermionic systems which allows addressing correlation effects in the steady state by systematic expansion.
Johan Carlström
doaj +1 more source
Numerical qualification of the GSP3(0) theory using the analytic function expansion nodal method [PDF]
EPJ Web of ConferencesThe simplified P3 (SP3) method is an important way to implement the pin-by-pin neutron transport calculation of the core. This method has the high accuracy but costs twice the computing time of the diffusion method.
Shi Jun +3 more
doaj +1 more source
Investigation of Nodal Numerical Adjoints From CMFD-Based Acceleration Methods
Frontiers in Energy Research, 2022 In this work, the attribute of mathematical adjoints acquired from various CMFD (coarse-mesh finite difference) accelerated nodal methods based on the nodal expansion method (NEM) is presented.
Taesuk Oh, Yonghee Kim
doaj +1 more source
Energies, 2022 The transmutation of transuranic (TRU) elements produced by pressurized water reactors (PWRs) can effectively reduce their radioactive hazards. The molten chloride salt fast reactor (MCSFR) is a type of liquid-fueled molten salt reactor (MSR) using fuel ...
Kaicheng Yu +3 more
doaj +1 more source
Designs, 2023 The low order Taylor’s series expansion was employed in this study to estimate the reliability indices of the failure criteria for reliability-based design optimization of a linear static structure subjected to random loads and boundary conditions.
Robert James Haupin, Gene Jean-Win Hou
doaj +1 more source
Active filter synthesis based on nodal admittance matrix expansion
EURASIP Journal on Wireless Communications and Networking, 2017 Active network synthesis is important for circuit designer to find new circuits with desired performance. In this paper, a method of Tow-Thomas (TT) Bi-quad band-pass filter circuit generation methods is proposed using nullor representation of the ...
Lingling Tan, Yunpeng Wang, Guizhen Yu
doaj +1 more source
3D Global Weak-Form Mesh-Free Method for Acoustic Attenuation Analysis of Expansion Chambers
Shock and Vibration, 2020 In order to avoid the dependence of mesh method on grids, a 3D global weak-form mesh-free method (MFM) is applied to study the three-dimensional acoustic characteristics of silencers.
Chun-Hui Fang, Cheng-Yang Liu, Zhi Fang
doaj +1 more source
Nodal method for handling irregularly deformed geometries in hexagonal lattice cores
Nuclear Engineering and TechnologyThe hexagonal nodal code RENUS has been enhanced to handle irregularly deformed hexagonal assemblies. The underlying RENUS methods involving triangle-based polynomial expansion nodal (T-PEN) and corner point balance (CPB) were extended in a way to use ...
Seongchan Kim +2 more
doaj +1 more source
From Shear to Sound: Mechanics–Acoustics Mapping of TPMS Lattices
Advanced Engineering Materials, EarlyView.Triply periodic minimal surface (TPMS) lattices are mapped across mechanical and acoustic performance, revealing that descriptors validated in compression fail under shear. First‐time comparison with trusses included. A transition from porous to resonance‐driven absorption emerges at 25% density.
Lucía Doyle +3 more
wiley +1 more source