NUMERICAL

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NUMERICAL ENERGY DISSIPATION FOR TIME-FRACTIONAL PHASE-FIELD EQUATIONS
《Journal of Computational Mathematics》2025年第3期515-539,共25页Chaoyu Quan Tao Tang Jiang Yang 
supported by the NSFC/Hong Kong RGC Joint Research Scheme(Grant No.NSFC/RGC 11961160718);supported by the National Natural Science Foundation of China(NSFC)(Grant No.12271240);by the fund of the Guangdong Provincial Key Laboratory of Computational Science and Material Design,China(Grant No.2019B030301001);by the Shenzhen Natural Science Fund(Grant No.RCJC20210609103819018);supported by the NSFC(Grant No.12271241);by the Guangdong Basic and Applied Basic Research Foundation(Grant No.2023B1515020030);by the Shenzhen Science and Technology Program(Grant Nos.RCYX2021060,9104358076).
The numerical integration of phase-field equations is a delicate task which needs to recover at the discrete level intrinsic properties of the solution such as energy dissipation and maximum principle.Although the the...
关键词：Time-fractional phased-field equation Allen-Cahn equations Cahn-Hilliard equations Caputo fractional derivative Energy dissipation 
Numerical Modeling of Submarine Landslide Motion and Impact Behavior Based on the SPH Method
《Journal of Ocean University of China》2025年第2期365-376,共12页DAI Zili LAN Baisen JIANG Mingtao JIANG Shenghui 
supported by the National Natural Science Foundation of China(Nos.42472332,42102318 and 42006143);the Open Research Fund Program of Zhoushan Field Scientific Observation and Research Station for Marine Geo-Hazards,China Geological Survey(No.ZSORS22-07);the Program for Professor of Special Appointment(Eastern Scholar)at Shanghai Institutions of Higher Learning(No.TP2019037);the Open Research Fund Program of Marine Ecological Restoration and Smart Ocean Engineering Research Center of Hebei Province(No.HB MESO2312)。
Submarine landslides frequently occur on continental margins and slopes,thereby causing serious damage to offshore structures.Therefore,analyzing their motion behavior and predicting their impact forces are crucial.In...
关键词：submarine landslide motion behavior impact force multiphase flow smoothed particle hydrodynamics 
Numerical design of transverse gradient coil with transformed magnetic gradient field over an effective imaging area
《Magnetic Resonance Letters》2025年第1期40-51,共12页Chaoqun Niu Hongyi Qu 
supported by the Instrument Developing Project of Magnetic Resonance Union of Chinese Academy of Sciences,Grant No.2022GZL002.
Gradient coil is an essential component of a magnetic resonance imaging(MRI)scanner.To achieve high spatial resolution and imaging speed,a high-efficiency gradient coil with high slew rate is required.In consideration...
关键词：Magnetic resonance imaging(MRI) Gradient coil Transformed magnetic gradient field Acoustic noise Induced electric field 
A regularization method for delivering the fourth-order derivative of experimental data and its applications in fluid-structure interactions
《Science China(Technological Sciences)》2025年第3期359-376,共18页Fan DUAN Jin-Jun WANG 
supported by the National Natural Science Foundation of China(Grant Nos.12127802 and 11721202)。
In the experimental investigation of fluid-structure interactions regarding the undulatory motion like flag flapping or fish swimming,solving the force distribution on the flexible body stands as an indispensable ende...
关键词：high-order numerical derivative REGULARIZATION FILM fluid-structure interactions bending force 
Review of Wave Energy Resource Characterisation,Metrics,and Global Assessments
《哈尔滨工程大学学报(英文版)》2025年第1期53-75,共23页Sara Ramos-Marin C.Guedes Soares 
This paper provides an overview of the global wave resource for energy exploration.The most popular metrics and estimators for wave energy resource characterization have been compiled and classified by levels of energ...
关键词：Marine energy Wave resource assessment Wave energy converter Numerical wave models Wave power density WEC performance 
Numerical Simulation and Analysis of Heat Treatment Processes on AISI 1025 Steel Produced by Laser Engineered Net Shaping
《Modeling and Numerical Simulation of Material Science》2025年第1期1-15,共15页Elphas Tum Rehema Ndeda James Mutua Raghupatruni Prasad Eyitao Olakanmi Sisa Pityana 
Heat treatment processes, such as annealing and quenching, are crucial in determining residual stress evolution, microstructural changes and mechanical properties of metallic materials, with residual stresses playing ...
关键词：Heat Treatment Residual Stresses HARDNESS Microstructure Numerical Simulation 
A dengue epidemic model with the impact of media influence
《Applied Mathematics(A Journal of Chinese Universities)》2025年第1期238-254,共17页QIAO Xia ZHANG Tai-lei HOU Yue 
Supported by the Natural Science Basic Research Plan in Shaanxi Province of China(2022JM-023)。
In this paper,we establish an ShIhAhSvIvW model to investigate the impact of media communication on the transmission mechanism of dengue fever.Firstly,the basic reproduction number R0of the model is obtained by using ...
关键词：dengue fever basic reproduction number uniform persistence media factors numerical predic-tion 
A simple method for automatic recreation of railway horizontal alignments
《Railway Engineering Science》2025年第1期62-78,共17页Alberte Castro Gerardo Casal Duarte Santamarina Miguel E.Vázquez‑Méndez 
founded by project TED2021129324B-I00 of the Ministerio de Ciencia e Innovación(Spain)and NextGenerationEU(European Union);the Collaboration Agreement between Consellería de Educación,Formación Profesional e Universidades(Xunta de Galicia,Spain)and Universidade de Santiago de Compostela(Spain)which regulates the Specialization Campus Campus Terra under Grant number 2022-PU014;support given by Xunta de Galicia(Spain)by means of the research projects 2023 GPC GI-2084 ED431B2023/17 and GRC GI-1563-ED431C 2021/15,respectively.
This paper deals with the problem of recreating horizontal alignments of existing railway lines.The main objective is to propose a simple method for automatically obtaining optimized recreated alignments located as cl...
关键词：Railway horizontal alignment Geometrical model Constrained optimization problem Numerical resolution 
Numerical simulation of microstructure and microporosity morphology in directional solidification of aluminum-copper alloys:Effect of copper content and withdrawal rate
《China Foundry》2025年第1期33-44,共12页Wei Yuan Hai-dong Zhao Xu Shen Chun Zou Yuan Liu Qing-yan Xu 
financially supported by the National Natural Science Foundation of China(Grant No.51875211);the Beijing Natural Science Foundation(Grant No.L223001)。
Microporosity formed in the solidification process of Al alloys is detrimental to the alloy properties.A two-dimensional cellular automaton(CA)model was developed to simulate the microstructure and microporosity forma...
关键词：MICROPOROSITY DENDRITES cellular automaton Al-Cu alloys directional solidification 
Numerical and analytical investigation of vapor flows in a flat plate heat pipe: Effects of length ratio and Reynolds number
《Propulsion and Power Research》2024年第4期523-533,共11页M.Johari H.A.Hoshyar D.D.Ganjic 
Heat pipes are crucial in a wide range of applications,ranging from space satellites and industrial systems to electronic cooling and X-ray tube thermal management.This study introduces a method investigation into vap...
关键词：Heat pipe Analysis Collocation method Runge-Kutta-Fehlberg method 
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