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Influence of fluid-structure interaction on vortex induced vibration and lock-in phenomena in long span

Nazim Abdul NARIMAN

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 4, Pages 363-384 doi: 10.1007/s11709-016-0353-y

Abstract: Shedding frequencies for the associated wind velocities in the lock-in region are calculated in boththe two-way approach predicts earlier vortex induced vibration for lower critical wind velocities and lock-in

Keywords： vortex-induced vibration fluid-structure interaction Strouhal number lock-in kinetic energy

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The practice of project construction and management of Three Gorges shiplock

Fan Qixiang,Yang Zongli,Liu Gang

Strategic Study of CAE 2011, Volume 13, Issue 7, Pages 91-95

Abstract:

The double-line five-step ship-lock of Three Gorges Project is an extra-largeThe ship-lock is a challenging and world-class project integrating the advanced techniques and equipmentThrough 17-year construction and 9-year operation of the ship-lock, various difficulties in design, constructionsummarized according to the management practice of the second stage main works of Three Gorges ship-lock

Keywords： project management Three Gorges Project ship-lock

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The design of double line five step ship-lock of Three Gorges Project

Niu Xingqiang,Tong Di,Song Weibang

Strategic Study of CAE 2011, Volume 13, Issue 7, Pages 85-90

Abstract:

The general design and layout of the double line five step ship lock, the water delivery technique for high head ship lock, the key technical problems of fully lined ship-lockSince the operation of ship lock in 2003, the operation practice has proved that the design techniquesThe design and construction of the fully lined ship lock promotes the development of design theory andpractice of ship lock projects, which makes the construction technology of ship lock in the world reach

Keywords： Three Gorges Project double-line five-step design of ship-lock

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The Generating Lock P<G，X，X'>and Its Central Encrypting System

Shi Kaiquan,Chen Zexiong

Strategic Study of CAE 2000, Volume 2, Issue 2, Pages 41-46

Abstract:

The conception of the generating lock P <G ,X, X´> and the centralThese systems include the generating lock P<G ,X, X´> and single-tooth central encryptingsystem, and the generating lock P <G ,X, X´> and multi-tooth central encrypting

Keywords： the generating lock the central encrypting system multi-tooth encrypting-decrypting algorithm P X X

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Study on four-step operational mode prototype debugging of TGP lock under impounded level 156 m in the

Hu Ya’an,Zhang Ruikai,Li Yun

Strategic Study of CAE 2009, Volume 11, Issue 9, Pages 52-58

Abstract: text-align: justify;">This paper expounds the superiority of adopting four-step operational mode for TGP lockof the 1st-bifurcation at mid chamber has been basically eliminated, the working conditions of the lockhead 45.2 m has been confirmed well, therefore, the four-step operational mode can be adopted for TGP lock

Keywords： TGP lock operational mode prototype debugging

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ENABLING CROP DIVERSIFICATION TO SUPPORT TRANSITIONS TOWARD MORE SUSTAINABLE EUROPEAN AGRIFOOD SYSTEMS

Frontiers of Agricultural Science and Engineering 2021, Volume 8, Issue 3, Pages 474-480 doi: 10.15302/J-FASE-2021406

Abstract:

European cropping systems are often characterized by short rotations or even monocropping, leading to environmental issues such as soil degradation, water eutrophication, and air pollution including greenhouse gas emissions, that contribute to climate change and biodiversity loss. The use of diversification practices (i.e., intercropping, multiple cropping including cover cropping and rotation extension), may help enhance agrobiodiversity and deliver ecosystem services while developing new value chains. Despite its benefits, crop diversification is hindered by various technical, organizational, and institutional barriers along value chains (input industries, farms, trading and processing industries, retailers, and consumers) and within sociotechnical systems (policy, research, education, regulation and advisory). Six EU-funded research projects have joined forces to boost crop diversification by creating the European Crop Diversification Cluster (CDC). This Cluster aggregates research, innovation, commercial and citizen-focused partnerships to identify and remove barriers across the agrifood system and thus enables the uptake of diversification measures by all European value-chain stakeholders. The CDC will produce a typology of barriers, develop tools to accompany actors in their transition, harmonize the use of multicriteria assessment indicators, prepare policy recommendations and pave the way for a long-term network on crop diversification.

Keywords： crop rotation lock-in intercropping multiple cropping networking

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Innovation of Management and Science and Technology in Phase I Construction of TGP

Dai Huichao,Cao Guangjing

Strategic Study of CAE 2005, Volume 7, Issue 1, Pages 50-59

Abstract:

The Three Gorges Project (TGP) has the characteristic of engineering largeness and technology complexity. The Three Gorges Reservoir started storing water on June 1, 2003, and water level reached 135 m on June 10. The double-way consecutive five-step ship locks succeeded trial navigation on June 16, 2003. The first hydro turbine generator units were put into operation on left bank in July, there were 6 sets hydro turbine generator in operation at the end of 2003. The Phase Ⅱ construction of TGP, in terms of storing water, navigation and power generation, has been finished. Breakthroughs have been made in a number of key technology problems, such as the TGP general layout and dam engineering, power station, the double-way consecutive five-step ship locks, super - hydro generator set, river diversion, river closure and cofferdam, research and practice of giant project’s management, etc.

Keywords： Three Gorges dam hydropower station ship lock generating set river closure management

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Key Technologies of the Hydraulic Structures of the Three Gorges Project

Xinqiang Niu

Engineering 2016, Volume 2, Issue 3, Pages 340-349 doi: 10.1016/J.ENG.2016.03.006

Abstract: discharge orifices, a hydropower station of giant generating units, and a giant continual multi-step ship lock

Keywords： Penstock on dam downstream surface Tailrace tunnel with sloping ceiling Stable arch Fully lined ship lock

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Impact of the Three Gorges Project on the Water Level and Navigation Channel in the Near-dam Reach Downstream The Gezhouba Project

Lu Yongjun ,Chen Zhicong,Zhao lianbai ,Shao Xuejun,Yang Meiqing,Li Yunzhong

Strategic Study of CAE 2002, Volume 4, Issue 10, Pages 67-72

Abstract:

The river channel change, the bed load and bed material armoring, and the water level lowering after the operation of the Gezhouba project are analyzed based on the topographic and hydrologic data. The water level lowering and it's impact on navigation in the period of construction and initial stage operation of the Three Gorges project are predicted by use of the results of mathematical and physical model.

Keywords： Gezhouba project Three Gorges project erosion water level lowering navigation lock and navigation channel