YNAO OpenIR中国科学院国家科学图书馆机构知识库http://ir.ynao.ac.cn:802018-06-19T23:36:01Z2018-06-19T23:36:01ZEvolution of the turbulent magnetic reconnection and interaction of helical magnetic structure (flex rope) from 3D VPIC virtual test on Tianhe-2Zhu BJ(朱伯靖)Yan HuiLi HuiGuo FanLi XiaocanLi ShanghaiFu XiangrongLin J(林隽)http://ir.ynao.ac.cn:80/handle/114a53/123372018-06-15T19:24:34Z2018-06-15T02:50:28Z题名: Evolution of the turbulent magnetic reconnection and interaction of helical magnetic structure (flex rope) from 3D VPIC virtual test on Tianhe-2
作者: Zhu BJ(朱伯靖); Yan Hui; Li Hui; Guo Fan; Li Xiaocan; Li Shanghai; Fu Xiangrong; Lin J(林隽)
摘要: <br />
摘要: In this letter, the interaction of the helical magnetic structure (flex rope) formation, separation (shrink and breakup into smaller ones), growth and coalescence process is investigated through 3D VPIC simulaiton on Tianhe-2 supercomputer. And the role of turbulence in the turbulent magnetic reconnection is quantitative analyzed.2018-06-15T02:50:28ZExploring the Role of Turbulent Acceleration and Heating in Fractal Current Sheet of Solar Flare from Hybrid PIC and LBM Virtual TestZhu BJ(朱伯靖)Lin J(林隽)http://ir.ynao.ac.cn:80/handle/114a53/123362018-06-15T19:24:36Z2018-06-15T02:42:02Z题名: Exploring the Role of Turbulent Acceleration and Heating in Fractal Current Sheet of Solar Flare from Hybrid PIC and LBM Virtual Test
作者: Zhu BJ(朱伯靖); Lin J(林隽)
摘要: The role of turbulent acceleration and heating in the fractal magnetic reconnection of solar flares is still not clear, especially at the X-point in the diffusion region. At virtual test aspect, it is hardly to quantitatively analyze the vortex generation, turbulence evolution, particle acceleration and heating in the magnetic islands coalesce in fractal manner, formatting into largest plasmid and ejection process in diffusion region through classical magnetohydrodynamics numerical method. With the development of physical particle numerical method (particle in cell method [PIC] , Lattice Boltzmann method [LBM] ) and high performance computing technology in recently two decades. Kinetic-dynamic simulation has developed into an effectively manner to exploring the role of magnetic field and electric field turbulence in charged particles acceleration and heating process, since all the physical aspects relating to turbulent reconnection are taken into account. In this paper, the LBM based lattice DxQy grid and extended distribution are added into charged-particles-to-grid-interpolation of PIC based finite difference time domain scheme and Yee Grid, the hybrid PIC-LBM simulation tool is developed to investigating turbulence acceleration on TIANHE-2. The actual solar coronal condition (L≈105Km,B≈50-500G,T≈5×106K, n≈108-109, mi/me≈500-1836) is applied to study the turbulent acceleration and heating in solar flare fractal current sheet. At stage I, magnetic islands shrink due to magnetic tension forces, the process of island shrinking halts when the kinetic energy of the accelerated particles is sufficient to halt the further collapse due to magnetic tension forces, the particle energy gain is naturally a large fraction of the released magnetic energy. At stage II and III, the particles from the energized group come in to the center of the diffusion region and stay longer in the area. In contract, the particles from non energized group only skim the outer part of the diffusion regions. At stage IV, the magnetic reconnection type nano-plasmoid (200km) stop expanding and carrying enough energy to eject particles as constant velocity. Last, the role of magnetic field turbulence and electric field turbulence in electron and ion acceleration at the diffusion regions in solar flare fractural current sheet is given.2018-06-15T02:42:02ZApplication of hypersingular integral equation method to three-dimensional crack in electromagnetothermoelastic multiphase compositesZhu BJ(朱伯靖)Qin Taiyanhttp://ir.ynao.ac.cn:80/handle/114a53/123292018-06-13T03:43:57Z2018-06-11T12:28:20Z题名: Application of hypersingular integral equation method to three-dimensional crack in electromagnetothermoelastic multiphase composites
作者: Zhu BJ(朱伯靖); Qin Taiyan
摘要: A three-dimensional crack problem in electromagnetothermoelastic multiphase composites (EMTE-MCs) under extended loads is investigated in this paper. Using Green’s functions, the extended general displacement solutions are obtained by the boundary element method. This crack problem is reduced to solving a set of hypersingular integral equations coupled with boundary integral equations, in which the unknown functions are the extended displacement discontinuities. Then, the behavior of the extended displacement discontinuities around the crack front terminating at the interface is analyzed by the main-part analysis method of hypersingular integral equations. Analytical solutions for the extended singular stresses, the extended stress intensity factors (SIFs) and the extended energy release rate near the crack front in EMTE-MCs are provided. Also, a numerical method of the hypersingular integral equations for a rectangular crack subjected to extended loads is put forward with the extended displacement discontinuities approximated by the product of basic density functions and polynomials. In addition, distributions of extended SIFs varying with the shape of the crack are presented. The results show that the present method accurately yields smooth variations of extended SIFs along the crack front.2018-06-11T12:28:20ZMixed-mode stress intensity factors of 3D interface crack in fully coupled electromagnetothermoelastic multiphase compositesZhu BJ(朱伯靖)Shi YaolinQin TaiyanMichael SukopYu ShaohuaLi Yongbinghttp://ir.ynao.ac.cn:80/handle/114a53/123282018-06-13T03:40:58Z2018-06-11T12:22:48Z题名: Mixed-mode stress intensity factors of 3D interface crack in fully coupled electromagnetothermoelastic multiphase composites
作者: Zhu BJ(朱伯靖); Shi Yaolin; Qin Taiyan; Michael Sukop; Yu Shaohua; Li Yongbing
摘要: This contribution presents an extended hypersingular intergro-differential equation (E-HIDE) method for modeling the 3D interface crack problem in fully coupled electromagnetothermoelastic anisotropic multiphase composites under extended electro-magneto-thermo-elastic coupled loads through theoretical analysis and numerical simulations. First, based on the extended boundary element method, the 3D interface crack problem is reduced to solving a set of E-HIDEs coupled with extended boundary integral equations, in which the unknown functions are the extended displacement discontinuities. Then, the behavior of the extended singular stress indices around the interface crack front terminating at the interface is analyzed by the extended main-part analysis. The extended stress intensity factors near the crack front are defined. In addition, a numerical method for a 3D interface crack problem subjected to extended loads is proposed, in which the extended displacement discontinuities are approximated by the product of basic density functions and polynomials. Finally, the radiation distribution of extended stress intensity factors at the interface crack surface are calculated, and the results are presented toward demonstrating the applicability of the proposed method.2018-06-11T12:22:48ZAnalysis of 3D fluid driven crack propagation problem in co-seismic slip under P- and S-waves by hybrid hypersingular integral methodZhu BJ(朱伯靖)Shi YaolinMichael SukopLi YongbingQin Taiyanhttp://ir.ynao.ac.cn:80/handle/114a53/123272018-06-13T03:36:12Z2018-06-11T12:17:22Z题名: Analysis of 3D fluid driven crack propagation problem in co-seismic slip under P- and S-waves by hybrid hypersingular integral method
作者: Zhu BJ(朱伯靖); Shi Yaolin; Michael Sukop; Li Yongbing; Qin Taiyan
摘要: This work reports a new and accurate way of theoretical and numerical description of the extended 3D fluid (electromagnetic and flow) driven crack progression in co-seismic slip under P- and S-waves. First, based on the viscous fluid flow reciprocal work theorem, the hybrid hypersingular integral equation (HIE) method proposed by the author was defined by combined with the coupled extended wave time-domain HIE and the extended diffused interface phase field method. The general extended 3D fluid flow velocity wave solutions are obtained by the extended wave time-domains Green’s function method. The 3D extended dynamic fluid driven crack modeling under fully coupled electromagnetothermoelastic P- and S-wave and flow field was established. Then, the problem is reduced to solving a set of extended hybrid HIEs coupled with nonlinear boundary domain integral equations, in which the unknown functions are the general extended flow velocity discontinuity waves. The behavior of the general extended singular stress indices around the crack front terminating is analyzed by hybrid time-domain main-part analysis. The general extended singular pore stress waves (SPSWs) and the extended dynamic stress intensity factors (DSIFs) on the fluid driven crack surface are obtained from closed-form solutions. In addition, a numerical method for the problem is proposed, in which the extended velocity discontinuity waves are approximated by the product of time-domain density functions and polynomials. The extended DSIFs and general extended SPSWs are calculated, and the results are presented toward demonstrating the applicability of the proposed method.2018-06-11T12:17:22Z3D modeling of crack growth in electro-magneto-thermo-elastic coupled viscoplastic multiphase compositesZhu BJ(朱伯靖)Qin Taiyanhttp://ir.ynao.ac.cn:80/handle/114a53/123262018-06-13T03:30:42Z2018-06-11T12:07:58Z题名: 3D modeling of crack growth in electro-magneto-thermo-elastic coupled viscoplastic multiphase composites
作者: Zhu BJ(朱伯靖); Qin Taiyan
摘要: This work presents a time-domain hypersingular integral equation (TD-HIE) method for modeling 3D crack growth in electro-magneto-thermo-elastic coupled viscoplastic multiphase composites (EMTE-CVP-MCs) under extended incremental loads rate through intricate theoretical analysis and numerical simulations. Using Green's functions, the extended general incremental displacement rate solutions are obtained by time-domain boundary element method. Three-dimensional arbitrary crack growth problem in EMTE-CVP-MCs is reduced to solving a set of TD-HIEs coupled with boundary integral equations, in which the unknown functions are the extended incremental displacement discontinuities gradient. Then, the behavior of the extended incremental displacement discontinuities gradient around the crack front terminating at the interface is analyzed by the time-domain main-part analysis method of TD-HIE. Also, analytical solutions of the extended singular incremental stresses gradient and extended incremental integral near the crack fronts in EMTE-CVP-MCs are provided. In addition, a numerical method of the TD-HIE for a 3D crack subjected to extended incremental loads rate is put forward with the extended incremental displacement discontinuities gradient approximated by the product of time-domain basic density functions and polynomials. Finally, examples are presented to demonstrate the application of the proposed method. 2018-06-11T12:07:58ZThree-dimensional flow driven pore-crack networks in porous composites: Boltzmann Lattice method and hybrid hypersingular integralsZhu BJ(朱伯靖)Shi Yaolinhttp://ir.ynao.ac.cn:80/handle/114a53/123252018-06-13T03:23:59Z2018-06-11T11:59:56Z题名: Three-dimensional flow driven pore-crack networks in porous composites: Boltzmann Lattice method and hybrid hypersingular integrals
作者: Zhu BJ(朱伯靖); Shi Yaolin
摘要: This study introduces a hybrid hypersingular integral equation-Lattice Boltzmann method (HHIE-LBM) for analyzing extended 3D flow driven pore-crack networks problem in various porosity composites. First, the extended hybrid electronic ionic, thermal, magnetic, electric and force coupled fields' pressure and velocity boundary conditions for HHIE-LBM model are established, and the closed form solutions of extended distribution functions are given. Second, an extended 3D flow driven pore-crack networks problem in various porosity composites is translated into a coupled of HHIE-LBM equations, and the pore-crack networks propagation parameters are analyzed. Third, the extended dynamic stress intensity factors (EDSIFs) are calculated by using the parallel numerical technology and the visualization results are presented. Last, the relationship between the EDSIFs and the differential porosity is discussed, and several rules have been found, which can be utilized to understand the extended fluid flow mechanism in various porosity composites and analyze the extended fluid flow varying mechanism on coseismal slip.2018-06-11T11:59:56ZCoseismic stress variation and numerical analysis of 2011 Japan-Honshu 9.0 earthquakeLiu ChangZhu BJ(朱伯靖)Shi Yaolinhttp://ir.ynao.ac.cn:80/handle/114a53/123242018-06-13T19:24:18Z2018-06-11T11:47:09Z题名: Coseismic stress variation and numerical analysis of 2011 Japan-Honshu 9.0 earthquake
作者: Liu Chang; Zhu BJ(朱伯靖); Shi Yaolin
摘要: Using hybrid hypersingular integral equation-Lattice Boltzmann method [1-3], the 2011 Japan-Honshu 9.0 earthquake coseismic stress tensor has been explored. A hypothesis based on slip elastic bound back and transient elastic-dynamic ultra low frequency shock plates assumes has been proposed and chaos phenomena in the results has been explained by using this hypothesis. 2018-06-11T11:47:09ZApplication of flow driven pore-network crack model to Zipingpu reservoir and Longmenshan slipZhu BJ(朱伯靖)Liu ChangShi YaolinSun DongshengZhang Kaihttp://ir.ynao.ac.cn:80/handle/114a53/123232018-06-13T19:24:20Z2018-06-11T11:37:10Z题名: Application of flow driven pore-network crack model to Zipingpu reservoir and Longmenshan slip
作者: Zhu BJ(朱伯靖); Liu Chang; Shi Yaolin; Sun Dongsheng; Zhang Kai
摘要: The study has analyzed the relationship between the water-drainage sluice process of reservoir, stress triggers and shadows of earthquake and porosity variability of fault slip zone. First, the pore pressure, pressure gradient, viscous stress and Reynolds stress to reservoir-earthquake fault slip problem are analyzed, and these are un-negligible factors of the extended coulomb failure stress under ultra-high temperature and pressure condition. Second, the porosity tensor and permeability tensor are studied, the relationship between Zipingpu reservoir and Longmenshan slip has been analyzed, and the extended viscous stress and Reynolds stress as function of time and infiltration process are obtained. Last, some primary conclusions about the flow-solid coupled facture mechanism to the Zipingpu reservoir and Longmenshan slip problem are presented, which can help understand the flow-solid coupled facture mechanism of reservoir-coseismic fault slip problem.2018-06-11T11:37:10ZSaturated dislocations transient propagation-evolution in olivine structure under ultra high-coupled thermal-force fieldsZhu BJ(朱伯靖)Liu ChangShi YaolinLiu Xuyaohttp://ir.ynao.ac.cn:80/handle/114a53/123222018-06-13T03:09:52Z2018-06-11T11:27:38Z题名: Saturated dislocations transient propagation-evolution in olivine structure under ultra high-coupled thermal-force fields
作者: Zhu BJ(朱伯靖); Liu Chang; Shi Yaolin; Liu Xuyao
摘要: Based on the first principle and flow driven pore-network crack theory, the crystal size saturated dislocations transient (10−4–10−5 s) propagation–evolution in olivine structure under ultra high-coupled temperature (200–500 °C) and pressure (0.4–1 GPa) are studied on the parallel CPU&GPU platform. First, the molecular-micro-scale transient fracture model is established by using hybrid hypersingular integral equation and Lattice Boltzmann method, the hydrogen ion and oxonium ion transport–dehydration (HI–OI–TD) in olivine [(FeMg)SiO4] crystal are explored. The bond-strength–length as function of thermal-force–time fields, the limited thermal-force value for HI–OI–TD through the crystal, and the ion state water adsorption in the crystal are calculated, respectively. Then, based on the above results, the crystal size saturated dislocations/defects propagation–evolution is studied. The relationship between the stress distribution and micro-strain under different velocity–time conditions, the saturated dislocations/defects propagation–evolution as function of coupled thermal-force–time fields are obtained. All these findings can helpful understand the mechanism of the dehydration fracturing shale gas, the coal-gas outbursts, and the coseismic triggering issues.2018-06-11T11:27:38Z