Prediction of Hydraulic Stability of Francis Turbines of Three Gorges Hydropower Station

1　ＩｎｔｒｏｄｕｃｔｉｏｎＯｐｅｒａｔｉｎｇｓｔａｂｉｌｉｔｙｉｓｔｈｅｉｍｐｏｒｔａｎｔｇｕａｒａｎｔｅｅｏｆａｔｕｒ ｂｏｇｅｎｅｒａｔｏｒｕｎｉｔ ｓｌｏｎｇ ｔｅｒｍａｎｄｓａｆｅｏｐｅｒａｔｉｏｎ．Ｔｈｅｔｕｒｂｏ ｇｅｎｅｒａｔｏｒｕｎｉｔｏｆｔｈｅＴｈｒｅｅＧｏｒｇｅｓｈｙｄｒｏｐｏｗｅｒｓｔａｔｉｏｎｉｓｏｎｅｏｆｔｈｅｌａｒｇｅｓｔｔｕｒｂｏｇｅｎｅｒａｔｏｒｕｎｉｔｓｉｎｔｈｅｗｏｒｌｄ，ｗｉｔｈｉｔｓｔｕｒｂｉｎｅ ｓｒａｔｅｄｏｕｔｐｕｔｏｆ 710ＭＷ，ｍａｘｉｍｕｍｏｕｔｐｕ…     

Analysis of Hydrologic Property of Poyang Lake

1　ＮａｔｕｒａｌＧｅｏｇｒａｐｈｉｃａｌＣｏｎｄｉｔｉｏｎｓＰｏｙａｎｇｌａｋｅｉｓｌｏｃａｔｅｄｉｎｔｈｅｎｏｒｔｈｐａｒｔｏｆＪｉａｎｇｘｉＰｒｏｖ ｉｎｃｅａｎｄｔｏｔｈｅｓｏｕｔｈｏｆＣｈａｎｇｊｉａｎｇＲｉｖｅｒ.ＩｔｒｅｃｅｉｖｅｓｗａｔｅｒｆｒｏｍＧａｎｊｉａｎｇ ,Ｆｕｈｅ ,Ｘｉｎｊｉａｎｇ ,ＲａｏｈｅａｎｄＸｉｕｓｈｕｉｒｉｖｅｒｓ(ｒｅｆｅｒｒｅｄｔｏａｓｆｉｖｅ -ｒｉｖｅｒｓｈｅｒｅａｆｔｅｒ)ｏｆｔｈｅｌａｋｅｓｙｓｔｅｍａｎｄｗａｔｅｒｆｒｏｍＢｏｙａｎｇ ,Ｚｈａｎｇａｎｄ…     

State of the “dam-foundation” system during operation of the outlet of the chirkey hydroelectric station

Conclusions  

Analysis of Micro Organic Compound Pollution in Major City River Reaches of the Main Stem of the Changjiang River

1　ＳｔｕｄｙＡｒｅａｓａｎｄＳｔｕｄｙＭｅｔｈｏｄｏｌｏｇｙ1.1　ＳａｍｐｌｉｎｇＡｒｅａｓａｎｄＳａｍｐｌｅＴｙｐｅｓＡｌｌｔｈｅｓａｍｐｌｅｓｗｅｒｅｃｏｌｌｅｃｔｅｄｆｒｏｍｍａｉｎｓｔｅｍｃｒｏｓｓ-ｓｅｃｔｉｏｎｓａｎｄｎｅａｒｓｈｏｒｅｗａｔｅｒｓｏｆ 2 2ｍａｊｏｒｃｉｔｙｒｉｖｅｒｒｅａｃｈｅｓｏｆＰａｎｚｈｉｈｕａ ,Ｙｉｂｉｎ ,Ｌｕｚｈｏｕ ,Ｃｈｏｎｇｑｉｎｇ ,Ｆｕｌｉｎｇ ,Ｗａｎｘ ｉａｎ ,Ｙｉｃｈａｎｇ ,Ｓｈａｓｈｉ,Ｙｕｅｙａｎｇ ,Ｗｕｈａｎ ,Ｅｚｈｏｕ ,Ｈｕａｎｇ ｓｈｉ,Ｊ…     

“Rosshelf” company and development of the arctic shelf of Russia

Power Technology and Engineering -     

Optimization of parabolic bars for maximum Bragg resonant reflection of long waves

This paper presents an analytical solution for the problem of the long wave reflection by a series of artificial bars with parabolic configuration in terms of the associated Legendre functions. It is shown that both the reflection and transmission coefficients depend solely upon the number of bars, the dimensionless bar height, the dimensionless bar width and the dimensionless bar distance. Particularly, under the Bragg resonance condition, i.e., the distance between two adjacent bars is about half of the wavelength of the normal incident waves, the analytical solution for the peak Bragg resonant reflection is obtained, which reveals that the peak Bragg resonance depends upon the number of bars, the dimensionless bar height and the dimensionless bar width. Based on this solution, the optimization of the parabolic bars is made to obtain the maximum Bragg resonance and a group of optimal curves, which may be very useful in the design of Bragg breakwaters with parabolic bars.     

A Method of Model Test for Studying Flow-induced Vibration of Hydraulic Structures

A model testing method for studying flow-induced vibration of hydraulic structures was developed. It was refered to as "the hydraulic test method of elastic model". Its similarity laws, model materials and data processing were studied in the paper. Both the general characteristics of flow-induced vibration and modal parameters of structure can be obtained by the proposed model testing method.     

Numerical simulation of hemodynamic interactions of red blood cells in micro-capillary flow

The hemodynamic interactions of red blood cells （RBCs） in a microcapillary flow are investigated in this paper. This kind of interaction is considered as the non-contact mutual interaction of cells, which is important in the suspension flow of blood, but not sufficiently understood. The distributed Lagrange multiplier/fictitious domain method in the lattice Boltzmann framework is used to solve the suspension of the RBCs. The modification of the flow due to the cells, the dependence of the cell deformation on the flow and the cell-cell interaction via the fluid are discussed. It is revealed that the long-range hydrodynamic interaction with a long interacting distance, more than about 5 times of the RBC equivalent radius, mainly has effect on the rheology properties of the suspension, such as the mean velocity, and the short-range interaction is sensitive to the shape of the cell in the microcapillary flow. The flow velocity around the cell plays a key role in the cell deformation. In the current configuration of the flow and cells, the cells repel each other along the capillary.     

Some physiological properties of an Italian isolate of “Microthrix parvicellai”

“Microthrir parvicella” strain RN1, isolated by micromanipulation from an activated sludge treatment plant in Italy, is phylogenetically identical to two other isolates from Australia. Our Italian isolate of “M. parvicella” is a slow growing (μmax ranging from 0.3 to 0.5 d^-1), aerobic organism that exhibits nutritional versatility, being able to utilize simple and complex compounds as carbon and nitrogen sources. In pure culture, the organism cannot grow anaerobically nor is it able to denitrify. Strain RN1 is able to grow both in aerobic and in microaerophilic conditions and this metabolic versatility could give it a metabolic advantage in the activated sludge milieu.     

Numerical study of the performance of multistage Scaba 6SRGT impellers for the agitation of yield stress fluids in cylindrical tanks

The 3-D flow fields and power consumption in a vessel stirred by multistage Scaba 6SRGT impeller have been investigated. The Xanthan gum solutions in water were used, which have a shear thinning behavior with yield stress. This study was carried out with the help of a CFD package(CFX 13.0, Ansys Inc.) which is based on the finite volume method to solve the momentum equations. The effects of stirring rate, fluid rheology, impeller number, impeller location and vessel size on the performance of such stirred system are presented. To validate the CFD model, our predicted results have been compared with other literature data and a satisfactory agreement has been found.     

Real time control of the sewer system of Boulogne Billancourt — A contribution to improving the water quality of the Seine

Confronted with the problem of overflows from its combined sewer system into the River Seine during rainfall, the Department of the Hauts de Seine (which covers some thirty urban districts on the west side of Paris) has decided to implement the real time control of its sewer system. To initiate this plan, as the town of Boulogne Billancourt seemed to be a particularly favourable site for the use of such techniques, a project to control its sewer system in real time has been implemented within the scope of the SPRINT 226 programme financed by the European Community.The preliminary studies, based on a MOUSE computer model of the sewer system, showed that the real time control of the sewer network under study had a high potential benefit, since it would allow an 80% reduction of the volumes of waste water discharged into the Seine annually in the study zone. Following on from these encouraging results, the installation of a complete real time control system was set in hand. The system, at present undergoing testing and evaluation, consists principally of a MOUSE ON LINE real time model and a system for forecasting rainfall by means of radar images.     

Journal of Hydrodynamics sponsored by

China ShiP Seientifie Researeh CenterPeking UniversityInstitute of Water Con哭r、,aney and Hydroeleet了ie Power Re溉rehShanghai Jiaotong IJI飞宜ve路ityFudan UniversityZhejiang UniversityTsinghua UniversityZhongshan UniversityHuazhong University of Science and TechnologyWuhan Institute of Water TransPortation Engineer加gNorth一W驾tern Polytechnical UniversityDalian Uni、rersity of TeehnologyNUClear Powet Institute ofC址naShanghai Instit-ute of APPUed MathemaUcs and Meeha川…     

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ChinaShipScientificResearchCenter PekingUniversity InstituteofWaterConservancyandHydroelectricPowerResearch ShanghaiJiaotongUniversity FudanUniversity ZhejiangUniversity TsinghuaUniversity ZhongshanUniversity HuazongUniversityofScienceandTechnology WuhanInstituteofWaterTransportationEngineering North-WestemPolytechnicalUnivcrsity DalianUniversityofTechnology NuclearPowerInstituteofChina ShanghaiInstltuteofAppliedMaithematicsandMechanics …     

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China Ship Sclentlflc Research venterPeking UniversityInstitute of Water Conservancy and Hydroelectric Power ResearchShanghai Jlaotong UniversityFudan UniversityZhejlang UniversityTsinghua UniversityZhongshan UniversityHuazong University ofsclence and且echnologyWuhan Institute of Water Transportation EngineeringNorth-Western Polytechnical UniversityDallan University of TechnologyNuclearPower Institute ofChlnaShanghai Institute of Applied Mathematics and MechanicsHobal Univers…     

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ＪｏｕｒｎａｌｏｆＨｙｄｒｏｄｙｎａｍｉｃｓｓｐｏｎｓｏｒｅｄｂｙＣｈｉｎａＳｈｉｐＳｃｉｅｎｔｉｆｉｃＲｅｓｅａｒｃｈＣｅｎｔｅｒＰｅｋｉｎｇＵｎｉｖｅｒｓｉｔｙＩｎｓｔｉｔｕｔｅｏｆＷａｔｅｒＣｏｎｓｅｒｖａｎｃｙａｎｄＨｙｄｒｏｅｌｅｃｔｒｉｃ...     

Journal of Hydrodynamics sponsored by

ChinaShipScientificResearchCenterPekingUniversityInstituteofWaterConservancyandHydroelectricPowerResearchShanghaiJiaotongUniversityFudanUniversityZhejiangUniversityTsinghuaUniversityZhongshanUniversityHuazongUniversityofScienceandTechnologyWuhanlnstituteofWaterTransportationEngineeringNorth--WesternPolytechnlcalUniversityDalianUniversityofTechnologyNuclearPowerInstituteofChinaShanghailnstituteofAppliedMathematicsandMechanicsHohaiUniversitySichuanUnionUniverstyofScienceandTe…     

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China Ship Scientific Research Center Peking University Institute of Water Conservancy and Hydroelectric power Research Shanghai Jiaotong University Fudan University Zhejiang University Tsinghua University Zhongshan University Huazhong University of Science and Technology Wuhan Transportation University.