FRACTAL

作品数：974被引量：1491H指数：15
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相关作者：李后强赵华明谢和平盛京邢修三更多>>
相关机构：中国科学院北京理工大学四川大学武汉大学更多>>
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相关基金：国家自然科学基金国家重点基础研究发展计划中国博士后科学基金国家教育部博士点基金更多>>
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MRT-LBM-based numerical simulation of seepage flow through fractal fracture networks被引量：12
《Science China(Technological Sciences)》2013年第12期3115-3122,共8页FAN Huo ZHENG Hong 
supported by the National Basic Research Program of China("973"Project)(Grant No.2011CB013505);the National Natural Science Funds for Distinguished Young Scholar(Grant No.50925933)
The study on seepage flow passing through single fractures is essential and critical for understanding of the law of seepage flow passing through fracture networks and the coupling mechanisms of seepage field and stre...
关键词：MRT-LBM fractal interpolation fracture networks seepage flow simulation microcosmic mechanism 
An experimental investigation on the mechanism of fluid flow through single rough fracture of rock被引量：31
《Science China(Technological Sciences)》2013年第8期2070-2080,共11页JU Yang ZHANG QinGang YANG YongMing XIE HePing GAO Feng WANG HuiJie 
supported by the National Science Funds for Distinguished Young Scholar of China (Grant No. 51125017);the National Basic Research Program of China (Grant Nos. 2010CB226804,2011CB201201);the National Natural Science Foundation of China (Grant No. 50974125);the International Cooperation Project of Ministry of Science & Technology of China (Grant No. 2012DFA60760-2);NSFC International Cooperation and Exchange Program (Grant No. 51120145001)
The structure of fractures in nature rock appears irregular and induces complicated seepage flow behavior.The mechanism and quantitative description of fluid flow through rock fractures is a difficult subject that has...
关键词：seepage flow single fracture rough morphology fractal description rock fractures 
Formation of non-equilibrium phases and associated structural transition in the Pd-Ta system induced by ion beam mixing被引量：1
《Science China(Technological Sciences)》2011年第3期676-681,共6页ZHAO Man DAI Ye LI JiaHao LIU BaiXin 
supported by the National Natural Science Foundation of China (Grant No. 50971072);the Ministry of Science and Technology of China (Grant No. 2006CB605201);the Administration of Tsinghua University
For the Pd-Ta system characterized by a negative heat of formation of -78 kJ/mol, 200 keV xenon ion beam mixing with nano-sized Pd-Ta multilayered films was conducted to study the non-equilibrium phase formation. The ...
关键词：amorphous phase Pd-Ta alloy ion beam mixing metastable crystalline phase FRACTAL 
Fractal model for simulation of frost formation and growth被引量：4
《Science China(Technological Sciences)》2010年第3期807-812,共6页LIU YaoMin,LIU ZhongLiang,HUANG LingYan&SUN JunFang Education Ministry Key Laboratory of Enhanced Heat Transfer and Energy Conservation,College of Environmental and Energy Engineering,Beijing University of Technology,Beijing 100124,China 
supported by the National Nature Science Foundation of China(Grant No.50376001);the Beijing Natural Science Foundation(Grant No.3073014);the 6th Graduate Science and Technology Foundation Program of BJUT(Grant No.ykj-2007-1512)
A planar fractal model for simulation of frost formation and growth was proposed based on diffusion limited aggregation(DLA)model and the computational simulation was carried out in this paper.By changing the times of...
关键词：FRACTAL FROST FORMATION and GROWTH DLA SIMULATION 
Impact factors of fractal analysis of porous structure被引量：6
《Science China(Technological Sciences)》2010年第2期348-351,共4页TANG HuiPing, ZHU JiLei, XI ZhengPing, DI XiaoBo, WANG JianYong & AO QingBo State Key Laboratory of Porous Metal Materials, Northwest Institute for Nonferrous Metal Research, Xi’an 710016, China 
supported by the National Basic Research Program of China (Grant No. 2006CB601201B)
Characterization of pore structure is one of the key problems for fabrication and application research on porous materials. But, complexity of pore structure makes it difficult to characterize pore structure by Euclid...
关键词：POROUS MATERIALS FRACTAL DIMENSION POROUS STRUCTURE 
Fractal model of lightning channel for simulating lightning strikes to transmission lines被引量：14
《Science China(Technological Sciences)》2009年第11期3135-3141,共7页HE JinLiang ZHANG XueWei DONG Lin ZENG Rong LIU ZeHong 
Supported by the National Nature Science Foundation of China (Grant No. 50737001);the National Basic Research Program of China ("973" Project) (Grant No. 2009CB724504)
How to accurately evaluate the direct-strike lightning protection is one of the key issues in the design of transmission lines. In this paper, three important issues in applying the fractal simulation to the lightning...
关键词：LIGHTNING SHIELDING failure transmission line FRACTAL theory dielectric BREAKDOWN MODEL electrogeometric MODEL 
Transient pressure analysis in porous and fractured fractal reservoirs被引量：1
《Science China(Technological Sciences)》2009年第9期2700-2708,共9页KONG XiangYan LI DaoLun LU DeTang 
Supported by the National Natural Science Foundation of China (Grant No. 10672159, 10702069);National Basic Research Program of China ("973") (Grant No. 2006CB705805)
Fluid flow in porous and fractured fractal reservoirs is studied in the paper. The basic formulae of seepage velocity,permeability and porosity in both porous and fractured fractal media are developed. The pressure di...
关键词：fluid flow POROUS MEDIA FRACTAL MEDIA PERMEABILITY POROSITY type-curves for FRACTAL RESERVOIRS anisotropic MEDIA 
Fractal characterization of pore microstructure evolution in carbon/carbon composites被引量：1
《Science China(Technological Sciences)》2009年第4期871-877,共7页LI MiaoLing QI LeHua LI HeJun XU GuoZhong 
Supported by the National Natural Science Foundation of China (Grant No. 50742008)
A fractal characterization approach was proposed to research pore microstructure evolution in car- bon/carbon (C/C) composites during the chemical vapor infiltration process. The data obtained from mercury porosimetry...
关键词：CARBON/CARBON composites PORE evolution porous medium FRACTAL mercury INTRUSION POROSIMETRY (MIP) 
Fractal derivative multi-scale model of fluid particle transverse accelerations in fully developed turbulence被引量：5
《Science China(Technological Sciences)》2009年第3期680-683,共4页HongGuang Sun Wen Chen 
Supported by the Program for New Century Excellent Talents in University China (Grant No. NCET-06-0480)
The Tsallis distribution and the stretched exponential distribution were successfully used to fit the experimental data of turbulence particle acceleration published in Nature (2001), which manifested a clear departur...
关键词：fully developed HOMOGENEOUS turbulence probability density function (PDF) ANOMALOUS diffusion power-stretched Gaussian distribution (PSGD) FRACTAL DERIVATIVE 
Influence of fractality of fracture surfaces on stress and displacement fields at crack tips被引量：3
《Science China(Technological Sciences)》2008年第S2期95-100,共6页BAO TengFei,WU ZhongRu,GU ChongShi & GU YanLing College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210098,China 
Supported by the National Natural Science Foundation of China (Grant Nos.50539030,50539010,50539110 and 50579010);the National Science and Technology Supporting Program (Grant No.2006BAC14B03);the National Science Foundation of Hohai University (Grant No.2008426811)
In the classic theory of fracture mechanics,expressions for calculating the stresses and displacements in the vicinity of the crack tip are deduced on the basis of the assumption that a fracture surface is a smooth su...
关键词：FRACTURE surface CRACK FRACTAL stress and DISPLACEMENT FIELDS 
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