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Numerical Modelling of Ore-forming Dynamics of Fractal Dispersive fluid systems

Acta Geologica Sinica(English Edition) 2001年第2期75卷 220-232页

作者： DENG Jun, FANG Yun, YANG Liqiang, YANG Junchen, SUN Zhongshi, WANG Jianping , DING Shijiang and WANG QingfeiChina University of Geosciences, Beijing 100081China University of Geosciences, Wuhan 430074 Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100101 Jilin University, Changchun 130026 China Univ Geosci Beijing 100081 Peoples R China China Univ Geosci Wuhan 430074 Peoples R China Acad Sinica Inst Geol & Geophys Beijing 100101 Peoples R China Jilin Univ Changchun 130026 Peoples R China

Based on an analysis of the fractal structures and mass transport mechanism of typical shear-fluid-ore formation system, the fractal dispersion theory of the fluid system was used in the dynamic study of the ore formation system. The model of point-source diffusive illuviation of the shear-fluid-ore formation system was constructed, and the numerical simulation of dynamics of the ore formation system was finished. The result shows that: (1) The metallogenic system have nested fractal structure. Different fractal dimension values in different systems show unbalance and inhomogeneity of ore-forming processes in the geohistory. It is an important parameter to symbolize the process of remobilization and accumulation of ore-forming materials. Also it can indicate the dynamics of the metallogenic system quantitatively to some extent. (2) In essence, the fractal dispersive ore-forming dynamics is a combination of multi-processes dominated by fluid dynamics and supplemented by molecule dispersion in fluids and

关键词： fluid system fractal dispersion point-source illuviation model ore-forming dynamics numerical simulation

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Late Paleozoic fluid systems and Their Ore-forming Effects in the Yuebei Basin,Northern Guangdong,China

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Acta Geologica Sinica(English Edition) 2005年第5期79卷 673-687页

作者： DENG Jun YANG Liqiang SUN Zhongshi WANG Jianping WANG Qingfei CHENG Xueming ZHOU Yinghua State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences Beijing 100083 Key Laboratory of Lithosphere Tectonics and Lithoprobing Technology of the Ministry of Education China University of Geosciences Beijing 100083 School of Earth Sciences Jilin University Chuangchun Jilin 130061

Based on detailed and systematic researches of the geology of ore deposits, fluid inclusions and isotope geochemistry etc., and regarding the Late Paleozoic fluid system of the Yuebei Basin as an integrated object in this paper, we have revealed the temporo-spatial evolution law of the basin＇s fluid system and discussed its ore-forming effects by simulating and analyzing the distribution of ore-forming elements, the fluid thermodynamics and dynamics of evolution processes of this basin. The results show that Late Paleozoic ore-forming fluid systems of the Yuebei Basin include four basic types as follows. （1） The sea floor volcanic-exhalation system developed during the rapid basin slip-extension stage in the Mid-Late Devonian, which affected the Dabaoshan region. It thus formed the Dabaoshan-type Cu-Pb-Zn-Fe sea floor volcanic-exhalation sedimentary deposits. （2） The compaction fluid system developed during the stable spreading and thermal subsidence-compression stage of the basin in the Mid-Late Devonian. The range of its effects extended all over the whole basin. It resulted in filling-metasomatic deposits, such as the Hongyan-type pyrite deposits and pyrite sheet within the Fankou-type Cu-Pb-Zn-S deposits. （3） The hot water circulation system of sea floor developed during the stage of basin uplifting and micro-aulacogen from the late Late Carboniferous to Middle Carboniferous. The range of its effects covered the Fankou region. It thus formed MVT deposits, such as the main orebody of the Fankou-type Pb-Zn-S deposits. （4） The gravity fluid system developed during the stage of fold uplifting and the basin closed from Middle Triassic to Jurassic, forming groundwater hydrothermal deposits, e.g. the veinlet Pb-Zn-calcite orebodies of the Fankou-type Pb-Zn- S deposits. Migration and concentration of the ore-forming fluids were constrained by the state of temporo-spatial distribution of its fluid potential. Growth faults not only converged the fluids and drove them to m

关键词： fluid system stratabound deposit Late Paleozoic Yuebei Basin Guangdong

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Multibody system transfer matrix method:The past, the present, and the future

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International Journal of Mechanical system Dynamics 2022年第1期2卷 3-26页

作者： Xiaoting Rui Jianshu Zhang Xun Wang Bao Rong Bin He Zhan Jin Institute of Launch Dynamics Nanjing University of Science and TechnologyNanjingChina

The multibody system transfer matrix method(MSTMM),a novel dynamics approach developed during the past three decades,has several advantages compared to conventional dynamics *** of these advantages include avoiding global dynamics equations with a system inertia matrix,utilizing low‐order matrices independent of system degree of freedom,high computational speed,and simplicity of computer *** has been widely used in computer modeling,simulations,and performance evaluation of approximately 150 different complex mechanical *** this paper,the following aspects regarding MSTMM are reviewed:basic theory,algorithms,simulation and design software,and *** research directions and generalization to more applications in various fields of science,technology,and engineering are discussed.

关键词： multibody system dynamics multibody system transfer matrix method transfer matrix transfer equation automatic assembly theorem reduced multibody system transfer matrix method theory software applications acoustic system electrical power system fluid system

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