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Journal of Computational Mathematics 1999年第4期17卷 379-396页

作者： Chuan-jn Xu(Department of Mathematics, Xiamen University, Xiamen 361005, China) 厦门大学数学系福建厦门 361005

An efficient iteration-by-subdomain method (known as the Schwarz alternating algorithm) for incompressible viscous/inviscid coupled model is presented. Appropriate spectral collocation approximations are proposed. The convergence analysis show that the iterative algorithms converge with a rate independent of the polynomial degree used.

关键词： coupled equations Navier-Stokes equations Euler equations cllocation approximation Schwarz alternating algorithm

Reactions induced by 30 MeV 3He beam on 9Be:cluster transfer reactions

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Chinese Physics C 2024年第1期48卷 61-70页

作者： B.A.Urazbekov T.Issatayev S.M.Lukyanov A.Azhibekov A.S.Denikin K.Mendibayev D.M.Janseitov Yu E.Penionzhkevich K.A.Kuterbekov T.K.Zholdybayev Gumiliyev Eurasian National University 2 Satpayev StrAstanaKazakhstan Institute of Nuclear Physics 1 Ibragimov StrAlmatyKazakhstan Bogolubov Laboratory of Theoretical Physics JINR20 Joliot Curie StrDubnaRussia Flerov Laboratory of Nuclear Reactions JINR20 Joliot Curie StrDubnaRussia Korkyt-ata State University 29A Aiteke-Byi StrKyzylordaKazakhstan Dubna State University 19 Universitetskaya StrDubnaRussia Al-Farabi Kazakh National University AlmatyKazakhstan

An experiment was conducted for studying the cluster structure of Be induced by He ions at an energy of 30 *** results of the nuclear reaction^(3)He+^(9)Be,the differential cross sections for the exit channels–elastic,inelastic,α+^(8)Be,^(6)He+^(6)Be,^(6)Li+^(6)Li,and^(7)Be+^(5)He–were *** and inelastic scattering data were treated within both the optical model and coupled channel method.A new set of optical potentials was considered for the elastic *** deformation parameter was established for the transition 3/2→5/*** transfer reactions were analyzed via the coupled reaction channel *** nuclear reactions with the exit channels^(6)He+^(6)Be,^(6)Li+^(6)Li,and^(7)Be+^(5)He were complemented by two-step transfer *** contribution of each reaction mechanism were shown and compared with the findings of other authors.

关键词： cluster transfer reaction mechanisms coupled equations

A GLOBAL ALGORITHM IN THE NUMERICAL RESOLUTION OF THE VISCOUS/INVISCID coupled PROBLEM

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Chinese Annals of Mathematics,Series B 1997年第2期18卷 191-200页

作者： XUCHUANJU MADAY,Y． DepartmentofMathematics XiamenUniversityXiamen361005 Laboratoired＇AnalyseNumerique UniversitePierreetMarieCurieParisFrance.

This paper deals with the spectral approximation of an incompressible viscous/inviscid coupled model. An efficient Uzawa algorithm based on a new variational formulation is proposed. The generalization to the coupl... 详细信息

关键词： coupled equations Navier-Stokes equations Euler equations Spectral discretization Global Uzawa algorithm

THM coupled Modeling in Near Field of an Assumed HLW Deep Geological Disposal Repository

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Journal of China University of Geosciences 2004年第4期15卷 388-394页

作者： ShenZhenyao LiGuoding LiShushen SchoolofEnvironment BeijingNormalUniversityBeijing100875China DepartmentofEnvironmentalScienceandEngineering TsinghuaUniversityBeijing100084China ChinaInstituteforRadiationProtection Taiyuan030006China

One of the most suitable ways under study for the disposal of high-level radioactive waste (HLW) is isolation in deep geological repositories. It is very important to research the thermo-hydro- mechanical (THM) coupled processes associated with an HLW disposal repository. Non-linear coupled equations, which are used to describe the THM coupled process and are suited to saturated-unsaturated porous media, are presented in this paper. A numerical method to solve these equations is put forward, and a finite element code is developed. This code is suited to the plane strain or axis-symmetry problem. Then this code is used to simulate the THM coupled process in the near field of an ideal disposal repository. The temperature vs. time, hydraulic head vs. time and stress vs. time results show that, in this assumed condition, the impact of temperature is very long (over 10 000 a) and the impact of the water head is short (about 90 d). Since the stress is induced by temperature and hydraulic head in this condition, the impact time of stress is the same as that of temperature. The results show that THM coupled processes are very important in the safety analysis of an HLW deep geological disposal repository.

关键词： HLW disposal thermo-hydro-mechanical (THM) coupled equations modeling.