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1.
Accession number: 20101512840328
Title: Control based on double neural networks-PI for parallel mechanism
Authors: Peng, Zhongbo1, 2 ; Liu, Fei2 ; Yang, Lin1
Author affiliation: 1 Department of Electrical and Mechanical, Chongqing Jiaotong University, 400074, China
2 Department of Mechanical Engineering, Chongqing University, 400030, China
Corresponding author: Peng, Z. (pzbpzbpzb751123@163.com)
Source title: Robotics and Computer-Integrated Manufacturing
Abbreviated source title: Rob Comput Integr Manuf
Volume: 26
Issue: 3
Issue date: June 2010
Publication year: 2010
Pages: 250-252
Language: English
ISSN: 07365845
CODEN: RCIMEB
Document type: Journal article (JA)
Publisher: Elsevier Ltd, Langford Lane, Kidlington, Oxford, OX5 1GB, United Kingdom
Abstract: In this paper, a control system based on double neural networks-PI for 3-RPS parallel mechanism is presented to aim for the nonlinear modeling and controlling. The control system is composed of three linear controllers, one neural network controller (NNC) for compensating the nonlinear modeling and one neural network identification (NNI) for the controlling model. Simulation results have shown that the response time, movement accuracy and resistance to load disturbance of the 3-RPS parallel mechanism system can be improved using the double neural networks-PI. © 2009 Elsevier Ltd. All rights reserved.
Number of references: 4
Main heading: Neural networks
Controlled terms: Computer simulation - Controllers - Identification (control systems) - Linear control systems - Mechanisms
Uncontrolled terms: Linear controllers - Load disturbances - Neural network controller (NNC) - Neural network controllers - Nonlinear modeling - Parallel mechanisms - Response time - Simulation result
Classification code: 961 Systems Science - 732.1 Control Equipment - 731.1 Control Systems - 723.5 Computer Applications - 723.4 Artificial Intelligence - 601.3 Mechanisms - 461.1 Biomedical Engineering
DOI: 10.1016/j.rcim.2009.11.006
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
2.
Accession number: 20101612855073
Title: Synchronization analysis in an array of asymmetric neural networks with time-varying delays and nonlinear coupling
Authors: Song, Qiankun1, 2
Author affiliation: 1 Department of Mathematics, Chongqing Jiaotong University, Chongqing, 400074, China
2 Yangtze Center of Mathematics, Sichuan University, Chengdu, 610064, China
Corresponding author: Song, Q. (qiankunsong@163.com)
Source title: Applied Mathematics and Computation
Abbreviated source title: Appl. Math. Comput.
Volume: 216
Issue: 5
Issue date: May 1, 2010
Publication year: 2010
Pages: 1605-1613
Language: English
ISSN: 00963003
CODEN: AMHCBQ
Document type: Journal article (JA)
Publisher: Elsevier Inc., 360 Park Avenue South, New York, NY 10010, United States
Abstract: In this paper, the global exponential synchronization is investigated for an array of asymmetric neural networks with time-varying delays and nonlinear coupling, assuming neither the differentiability for time-varying delays nor the symmetry for the inner coupling matrices. By employing a new Lyapunov-Krasovskii functional, applying the theory of Kronecker product of matrices and the technique of linear matrix inequality (LMI), a delay-dependent sufficient condition in LMIs form for checking global exponential synchronization is obtained. The proposed result generalizes and improves the earlier publications. An example with chaotic nodes is given to show the effectiveness of the obtained result. © 2010 Elsevier Inc. All rights reserved.
Number of references: 41
Main heading: Neural networks
Controlled terms: Linear matrix inequalities - Lyapunov functions - Synchronization - Time varying control systems - Time varying networks - Uncertain systems
Uncontrolled terms: Asymmetric neural networks - Delay-dependent - Differentiability - Exponential synchronization - Kronecker product of matrices - Lyapunov-Krasovskii functionals - Nonlinear coupling - Sufficient conditions - Time-varying delay
Classification code: 921.1 Algebra - 921 Mathematics - 731.4 System Stability - 961 Systems Science - 731.1 Control Systems - 703.1 Electric Networks - 461.1 Biomedical Engineering - 723.4 Artificial Intelligence
DOI: 10.1016/j.amc.2010.03.014
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
3.
Accession number: 20101512844876
Title: Multi-view modeling scheme and total solution for enterprise digitalization
Authors: He, Xiaobing1, 2 ; Liu, Fie1 ; He, Yan1 ; Yan, Chunping1
Author affiliation: 1 Institute of Manufacturing Engineering, Chongqing University, Chongqing 400030, China
2 Chongqing Jiaotong University, Chongqing 400074, China
Corresponding author: He, X. (david.hxb@gmail.com)
Source title: Advanced Materials Research
Abbreviated source title: Adv. Mater. Res.
Volume: 102-104
Monograph title: Digital Design and Manufacturing Technology
Issue date: 2010
Publication year: 2010
Pages: 841-845
Language: English
ISSN: 10226680
ISBN-10: 087849278X
ISBN-13: 9780878492787
Document type: Conference article (CA)
Conference name: 2010 Global Conference on Digital Design and Manufacturing Technology
Conference date: April 26, 2010 - April 28, 2010
Conference location: Hangzhou, Zhejiang, China
Conference code: 79739
Sponsor: Committee of Drawing Technique; China Engineering Graphics Society(CEGS); Zhejiang University of Technology; Wenzhou Vocational and Technical College
Publisher: Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany
Abstract: Enterprise Digitalization depends to a large extent on models of enterprise process built for design and analysis. From the perspectives of product life cycle and enterprise informationization lifecycle, the paper outlined a modeling scheme with IDEF suite which guided multi-view modeling of Enterprise Digitalization and its process, and provided a total solution for Enterprise Digitalization, which would facilitate internal informationization systems of enterprise integrated with networked systems outside the enterprise to support business operations, and make enterprise manufacturing sectors integrated with external networked manufacturing systems and production equipments seamlessly. © (2010) Trans Tech Publications.
Number of references: 7
Main heading: Manufacture
Controlled terms: Design
Uncontrolled terms: Business operation - Design and analysis - Enterprise digitalization - Informationization - Manufacturing sector - Multi-view modeling - Networked manufacturing systems - Networked systems - Product life cycles - Production equipments
Classification code: 408 Structural Design - 537.1 Heat Treatment Processes - 902.1 Engineering Graphics - 913.4 Manufacturing
DOI: 10.4028/www.scientific.net/AMR.102-104.841
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
4.
Accession number: 20101512844891
Title: A theoretical architecture for regional manufacturing system
Authors: He, Xiaobing1, 2 ; Liu, Fie1 ; He, Yan1 ; Yin, Huachuan1, 3
Author affiliation: 1 Institute of Manufacturing Engineering, Chongqing University, Chongqing 400030, China
2 Chongqing Jiaotong University, Chongqing 400074, China
3 Chongqing Information Industry Bureau, Chongqing 400020, China
Corresponding author: He, X. (david.hxb@gmail.com)
Source title: Advanced Materials Research
Abbreviated source title: Adv. Mater. Res.
Volume: 102-104
Monograph title: Digital Design and Manufacturing Technology
Issue date: 2010
Publication year: 2010
Pages: 915-919
Language: English
ISSN: 10226680
ISBN-10: 087849278X
ISBN-13: 9780878492787
Document type: Conference article (CA)
Conference name: 2010 Global Conference on Digital Design and Manufacturing Technology
Conference date: April 26, 2010 - April 28, 2010
Conference location: Hangzhou, Zhejiang, China
Conference code: 79739
Sponsor: Committee of Drawing Technique; China Engineering Graphics Society(CEGS); Zhejiang University of Technology; Wenzhou Vocational and Technical College
Publisher: Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany
Abstract: China's manufacturing industry has obvious regional characteristics. With the regional economic development, how to improve the overall competitiveness of the regional manufacturing industry has become an important research subject for regional development. This paper analyzed the possibility of constructing Regional Manufacturing System (RMS) from the aspect of regional industrial association degree, puts forward the theoretical architecture of RMS which provides a reference model for the optimizing operation of the Manufacturing System and the business cooperation among the manufacturing enterprises in the region. © (2010) Trans Tech Publications.
Number of references: 7
Main heading: Industrial research
Controlled terms: Competition - Instrument scales - Manufacture - Optimization - Regional planning
Uncontrolled terms: Economic development - Manufacturing enterprise - Manufacturing industries - Manufacturing system - Reference models - Regional characteristics - Regional development - Research subjects
Classification code: 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 921.5 Optimization Techniques - 913.4 Manufacturing - 912.1 Industrial Engineering - 911.2 Industrial Economics - 901.3 Engineering Research - 537.1 Heat Treatment Processes - 403.2 Regional Planning and Development
DOI: 10.4028/www.scientific.net/AMR.102-104.915
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
5.
Accession number: 20101812907065
Title: Mechanical mechanism for retreat evolution of steep rock slopes with gentle dip
Authors: Chen, Hong-Kai1, 2 ; Tang, Hong-Mei1, 2 ; Wang, Lin-Feng1 ; Xian, Xue-Fu2
Author affiliation: 1 Institute of Geotechnical Engineering, Chongqing Jiaotong University, Chongqing 400071, China
2 Key Lab. for Exploitation of Southwestern Resources and Environmental Disaster Control Eng., Chongqing University, Chongqing 400044, China
Corresponding author: Chen, H.-K. (chk_cq@163.com)
Source title: Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering
Abbreviated source title: Yantu Gongcheng Xuebao
Volume: 32
Issue: 3
Issue date: March 2010
Publication year: 2010
Pages: 468-473
Language: Chinese
ISSN: 10004548
CODEN: YGXUEB
Document type: Journal article (JA)
Publisher: Chinese Society of Civil Engineering, 34 Hujuguan, Nanjing, 210024, China
Abstract: Retreat evolution of steep rock slopes is one of complex geological mechanical and dynamic geomorphology processes and is also the dominant developing mechanism for perilous rock, collapse and avalanche in mountainous areas, in keeping with the chained regularity of rock slope evolution. The control fissure in perilous rock is regarded as I-type crack for a single perilous rock block. A method to calculate the strength factor of fracture stress of rock is established considering the creep rock effect by introducing the general Kelvin model. With regard to steep rock slopes with gentle dip, based on engineering mechanics, the method to calculate loads acting on perilous rocks is established. The strength factor of fracture stress and the control fissure in perilous rock considering the creep rock effect is combined with the rock tenacity, and the criterion for collapse of perilous rock blocks on steep rock slopes is proposed. Case studies show that the mechanical mechanism for the retreat evolution of steep rock slopes is consistent with the actual one.
Number of references: 18
Main heading: Fracture
Controlled terms: Creep - Dynamics - Fracture mechanics - Geomorphology - Landforms - Rocks
Uncontrolled terms: Creep rocks - Engineering mechanics - Fracture stress - General Kelvin model - Mechanical mechanisms - Mountainous area - Rock block - Rock slope - Steep rock slope - Strength factor
Classification code: 421 Strength of Building Materials; Mechanical Properties - 481.1 Geology - 481.1.1 Geomorphology - 931.1 Mechanics - 951 Materials Science
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
6.
Accession number: 20101512843966
Title: Stability of stochastic impulsive neural networks with unbounded time-varying delays
Authors: Liu, Guodong1 ; Wu, Guoxiong1 ; Wang, Zhengxia2 ; Ding, Jingsheng1
Author affiliation: 1 School of Civil and Architecture Engineer, Chongqing Jiaotong University, Chongqing 400074, China
2 Department of Information and Computational Science, Chongqing Jiaotong University, Chongqing 400074, China
Corresponding author: Liu, G. (gdliu76@126.com)
Source title: 5th International Conference on Natural Computation, ICNC 2009
Abbreviated source title: Int. Conf. Nat. Comput., ICNC
Volume: 3
Monograph title: 5th International Conference on Natural Computation, ICNC 2009
Issue date: 2009
Publication year: 2009
Pages: 552-556
Article number: 5366012
Language: English
ISBN-13: 9780769537368
Document type: Conference article (CA)
Conference name: 5th International Conference on Natural Computation, ICNC 2009
Conference date: August 14, 2009 - August 16, 2009
Conference location: Tianjian, China
Conference code: 79867
Sponsor: Tianjin University of Technology
Publisher: IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
Abstract: In this paper, the problem of asymptotic stability for stochastic impulsive neural networks with unbounded time-varying delays is investigated. It is of great interest in both theory and practice that the stability of neural networks with unbounded time-varying delays is investigated. New stability criteria are presented by using Lyapunov-Kraovskii functional and linear matrix inequalities. An example is presented to demonstrate the effectiveness of the main results. © 2009 IEEE.
Number of references: 18
Main heading: Neural networks
Controlled terms: Asymptotic stability - Linear matrix inequalities - Stability criteria - Stochastic systems - Time varying control systems - Time varying networks
Uncontrolled terms: Impulsive neural networks - Lyapunov - Theory and practice - Time-varying delay
Classification code: 921.6 Numerical Methods - 921.1 Algebra - 731.4 System Stability - 961 Systems Science - 731.1 Control Systems - 703.1 Electric Networks - 461.1 Biomedical Engineering - 723.4 Artificial Intelligence
DOI: 10.1109/ICNC.2009.306
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
7.
Accession number: 20101512840947
Title: Non-contact measurement of surface flow velocity using photoelectric method
Authors: Wu, Jun1, 2 ; Ding, Shen-Qi2 ; Yu, Kui2 ; Li, Xiao-Biao2
Author affiliation: 1 Key Laboratory for Hydraulic and Water Transport Engineering, Chongqing Jiaotong University, Chongqing 400074, China
2 Southwest Water Transport Research Department, Chongqing Jiaotong University, Chongqing 400016, China
Corresponding author: Wu, J. (wujun_gd@yahoo.com.cn)
Source title: Guangxue Jingmi Gongcheng/Optics and Precision Engineering
Abbreviated source title: Guangxue Jingmi Gongcheng
Volume: 18
Issue: 2
Issue date: February 2010
Publication year: 2010
Pages: 349-356
Language: Chinese
ISSN: 1004924X
CODEN: GJGOF4
Document type: Journal article (JA)
Publisher: Chinese Academy of Sciences, 140 Renmin Street, Changchun, 130022, China
Abstract: Aimming at the technological actuality of surface flow velocity measurement, a novel noncontact photoelectric measuring method for surface flow velocity is proposed. By deducing scattered light intensity formulae, it is concluded that scattered light intensities modulated by both up and down stream shallow sediments have cross-correlated characteristics based on sediment succession effect in shallow water. A formula for flow velocity measurement is derived and the effects of the measuring distance between up and down streams, flow velocity and sampling ratio on the measuring results are analyzed based on the cross-correlated characteristics. Then, an experimental system is set up, and the flow velocities are measured at 6 different flow rates in the cases of 6 sediment concentrations. The experimental results show that the measured flow velocity is coincident very well with the calibration flow velocity under six different sediment concentrations, which proves the feasibility of measurement theory. Experimental results also show that the absolute errors can be controlled to less than 8% and the correlative errors within 8% under the circumstances of suitable sediment in liquid.
Number of references: 10
Main heading: Velocity
Controlled terms: Coiled tubing - Errors - Flow velocity - Hydraulics - Light scattering - Measurement theory - Photoelectricity - Sedimentology - Surface chemistry - Velocimeters - Velocity measurement
Uncontrolled terms: Noncontact measurements - Physical model - Shallow sediment - Surface flow - Surface flow velocity measurement
Classification code: 741.1 Light/Optics - 801.4 Physical Chemistry - 921 Mathematics - 943.3 Special Purpose Instruments - 922 Statistical Methods - 931.1 Mechanics - 943.2 Mechanical Variables Measurements - 922.2 Mathematical Statistics - 731 Automatic Control Principles and Applications - 701.1 Electricity: Basic Concepts and Phenomena - 481.1 Geology - 619.1 Pipe, Piping and Pipelines - 631 Fluid Flow - 632.1 Hydraulics - 652.2 Aircraft Materials - 662.3 Automobile and Smaller Vehicle Materials
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
8.
Accession number: 20101712896779
Title: Numerical simulation of dynamic response for quasi-high speed railway subgrade
Authors: Sun, Chang-Xin1, 2 ; Hu, Jin-Hu2 ; Liang, Bo1
Author affiliation: 1 Chongqing Jiaotong University, Chongqing 400074, China
2 North China University of Water Conservancy and Electric Power, Zhengzhou 450011, China
Corresponding author: Sun, C.-X. (sunchangxin@ncwu.edu.cn)
Source title: Jisuan Lixue Xuebao/Chinese Journal of Computational Mechanics
Abbreviated source title: Jisuan Lixue Xuebao
Volume: 27
Issue: 1
Issue date: February 2010
Publication year: 2010
Pages: 173-176
Language: Chinese
ISSN: 10074708
CODEN: JLXIAB
Document type: Journal article (JA)
Publisher: Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China
Abstract: Based on the railway subgrade of Qin-Shen special line for passenger transport, the dynamic response for quasi-high speed railway subgrade was simulated and studied. Using the finite element method, the railway subgrade's dynamic response's (dynamic displacement) distributed rule under the high speed train load was calculated and analyzed, the influencing factors of subgrade's dynamic displacement were discussed, "the double peaks phenomena" which denoting the change of subgrade's dynamic response (dynamic displacement) with railway speed was brought forward, and its causing reason was analyzed. The field testing dates of the qin-shen special line for passenger transport and the calculating dates were contrasted in the end, the conclusion was gotten that the numerical simulation and field test had accordant results.
Number of references: 6
Main heading: Dynamic response
Controlled terms: Computer simulation - Finite element method - Railroad engineering - Railroad tracks - Railroad transportation - Railroads - Speed
Uncontrolled terms: Double peak - Dynamic displacements - Field test - Field testing - High speed trains - High-speed railway subgrade - Influencing factor - Numerical simulation - Passenger transport - Railway subgrade
Classification code: 921.6 Numerical Methods - 723.5 Computer Applications - 682 Railroad Rolling Stock - 931.1 Mechanics - 681.1 Railway Plant and Structures, General - 433.1 Railroad Transportation, General - 408.1 Structural Design, General - 681 Railway Plant and Structures
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
9.
Accession number: 20101612869016
Title: A constitutive model for structured clays based on two different types of overconsolidation
Authors: Zhang, Yong-Xing1 ; Zheng, Zhi-Neng1, 2 ; Liu, Yuan-Xue3
Author affiliation: 1 College of Civil Engineering, Chongqing University, Chongqing 400044, China
2 School of Civil Engineering and Architecture, Chongqing Jiaotong University, Chongqing 400074, China
3 Department of Civil Engineering, Logistical Engineering University, Chongqing 400041, China
Corresponding author: Zhang, Y.-X. (cqyxzhang@163.com)
Source title: Tumu Jianzhu yu Huanjing Gongcheng/Journal of Civil, Architectural and Environmental Engineering
Abbreviated source title: Tumu Jianzhu yu Huanjing Gongcheng
Volume: 32
Issue: 1
Issue date: February 2010
Publication year: 2010
Pages: 1-3
Language: Chinese
ISSN: 16744764
Document type: Journal article (JA)
Publisher: China National Publication Industry Trading Corporation, P.O. Box 782, Beijing, 100011, China
Abstract: Structure has a major influence on the stress-strain relation of soil, which implies that the constitutive model should reflect the its structure. Based on the investigation , the over-consolidation (OC) of the soils was made up of two different types, which were structure-induced OC and stress-induced OC. And then the structure-induced OC and stress-induced OC were united. Structure-induced OC index was used to represent the degree of structure and the cam clay model was extended. The shape of the yield surface was the same as cam clay model, whise the size was equal to the sum of the structure-induced OC and stress-induced OC. And the change in size of the yield surface was decerminated by the volume-harden function and the structural damage function. The associated flow rule was adopted in the model. Afterwards constitutive model for structured clays was presented. The concept of the model is clear and the parameters are simple. The ability of the model is good by firstly application and it can describe the character of the structured soils.
Number of references: 11
Main heading: Geologic models
Controlled terms: Cams - Consolidation - Constitutive models - Soils
Uncontrolled terms: Associated flow rule - Cam-Clay model - Over consolidation - Stress strain relation - Stress-induced - Structural damages - Structured clay - Structured soil - Yield surface
Classification code: 931 Classical Physics; Quantum Theory; Relativity - 921 Mathematics - 601.3 Mechanisms - 483.1 Soils and Soil Mechanics - 483 Soil Mechanics and Foundations - 481.1 Geology - 421 Strength of Building Materials; Mechanical Properties
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
10.
Accession number: 20101612869222
Title: Analysis of operating quality of low class highlands highway with minimum standard design elements
Authors: Xu, Jin1 ; Peng, Qiyuan1 ; Shao, Yiming2 ; Li, Shihua3
Author affiliation: 1 College of Traffic and Transportation, Southwest Jiaotong University, Chengdu 610031, China
2 Department of Transportation Engineering, Chongqing Jiaotong University, Chongqing 400074, China
3 Daguan Highway Administration, Zhaotong 657400, China
Corresponding author: Xu, J. (yhnl_996699@163.com)
Source title: Tongji Daxue Xuebao/Journal of Tongji University
Abbreviated source title: Tongji Daxue Xuebao
Volume: 38
Issue: 2
Issue date: February 2010
Publication year: 2010
Pages: 245-251+272
Language: Chinese
ISSN: 0253374X
CODEN: TTHPDJ
Document type: Journal article (JA)
Publisher: Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China
Abstract: 3D road module, vehicle models database, and driver module were built with computer, and integrated into roadway-driver-vehicle simulation system. A forth class road in Yunnan province in China was selected as the research object in driving simulation, and the passenger cars as the simulation vehicles. The determination of parameters used to characterize driving behavior was based on common diriver types of real world, and the road centerline was followed by the car while driving. An analysis was made of the speed performance, complexity of the driving task, and comfort of driving and riding. The results show that if consistency of design standard along road length can be ensured, especially the straight section length being controlled, lower class road with equilibrium speed can also be designed. Reverse loop and absent of spirals in lower class road may cause a high increases in peak value of steering wheel rev and change rate of lateral acceleration, which will lead to drivers' flurry and uncomfortable riding. Curve-based method should be attempted in alignment design more frequently, which seems to be the best solution to highway safety problems.
Number of references: 12
Main heading: Roads and streets
Controlled terms: Alignment - Automobiles - Design - Highway engineering - Motor transportation - Quality control - Speed - Three dimensional
Uncontrolled terms: Centerlines - Design standard - Determination of parameters - Driver modules - Driving behavior - Driving simulation - Driving tasks - Highway alignment - Highway safety - Lateral acceleration - Low class - Peak values - Research object - Riding comfort - Road operating - Speed performance - Standard design - Steering wheel - Vehicle model - Vehicle simulation - Yunnan province
Classification code: 931.1 Mechanics - 913.3 Quality Assurance and Control - 902.1 Engineering Graphics - 723.5 Computer Applications - 662.1 Automobiles - 603.1 Machine Tools, General - 601.1 Mechanical Devices - 432 Highway Transportation - 408 Structural Design - 406.2 Roads and Streets - 406 Highway Engineering
DOI: 10.3969/j.issn.0253-374x.2010.02.016
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
11.
Accession number: 20101512841494
Title: Comparative study on the modeling of tidal current velocity profile in near-bottom boundary layers
Authors: Ni, Zhi-Hui1, 2 ; Song, Zhi-Yao3
Author affiliation: 1 State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China
2 Southwestern Research Institute of Water Transportation Engineering, Chongqing Jiaotong University, Chongqing 400016, China
3 Key Laboratory of Virtual Geographic Environment, Ministry of Education, Nanjing Normal University, Nanjing 210097, China
Corresponding author: Ni, Z.-H. (benny251@sina.com)
Source title: Shuikexue Jinzhan/Advances in Water Science
Abbreviated source title: Shuikexue Jinzhan
Volume: 21
Issue: 1
Issue date: January 2010
Publication year: 2010
Pages: 89-94
Language: Chinese
ISSN: 10016791
CODEN: SHUJE6
Document type: Journal article (JA)
Publisher: China Water Power Press, no. 1 Xikang Road, Nanjing, 210024, China
Abstract: A double-logarithmic velocity profile model(DLVPM) for tidal currents in near-bottom boundary layers is established. The DLVPM is achieved on the bases of the hydrodynamic equations for nonlinear unsteady tidal currents and the vertical distribution of Reynolds stresses, together with the Prandtl's mixing length theory and the von Karman's self-similarity hypothesis. The DLVPM is applied in the west Solent a narrow channel between the Isle of Wight and the southern mainland of England and the Xiyang estuary out of Jiangsu coastlines in eastern China. The simulated tidal current velocity profiles are compared to the observations with satisfactory results. A comparative study is then carried out to evaluate the performances of three different velocity profile models including logarithmic, logarithmic linear and DLVPM. The result shows that both friction velocity and roughness height can be better simulated using DLVPM compared to another two simulations in the two model applications.
Number of references: 9
Main heading: Velocity
Controlled terms: Boundary layers - Friction - Nonlinear equations - Ocean currents - Reynolds number - Tribology
Uncontrolled terms: Friction velocity - Linear profiles - Reynolds stress - Roughness height - Tidal currents
Classification code: 931.1 Mechanics - 931 Classical Physics; Quantum Theory; Relativity - 921.1 Algebra - 931.2 Physical Properties of Gases, Liquids and Solids - 651.1 Aerodynamics, General - 631.1 Fluid Flow, General - 471.4 Seawater, Tides and Waves - 641.2 Heat Transfer
Database: Compendex
Compilation and indexing terms, © 2009 Elsevier Inc.
12.
Accession number: 20101412829644
Title: Study on rebound deformation behavior of sand-gravel material
Authors: Qin, Min1 ; Liang, Nai-Xing1 ; Lu, Zhao-Feng1
Author affiliation: 1 Chongqing Jiaotong University, Chongqing, 400074, China
Corresponding author: Qin, M. (qinmin_1981@163.com)
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