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REENGAGING THE LAND AT THE GEORGE *** PRESIDENTIAL CENTER

Journal of Green Building 2014年第3期9卷 3-22页

作者： Laura Solano Herb Sweeney IV Michael Van Valkenburgh Associates Landscape Architects Senior Associate Michael Van Valkenburgh AssociatesLandscape Architects

In planning the George *** Presidential Center in Dallas,Texas,former First Lady Laura Bush presented a very clear vision of what the Center should epitomize:“Because George was the first president of the new millennium,I wanted it to be forward and modern.”1 For the president and *** this meant making the building and landscape environmentally responsible,beautiful,and *** particular,their love of native Texas landscapes was an important framework for transforming the project’s urban site into a park that was sustainable and experientially rich for *** was addressed from the start with smart planning that privileged contiguous parkland over impermeable surfaces and *** consideration of every landscape component—-stormwater,plants,soil,topography,and more—netted cohesive natural systems that are better able to succeed with short-term establishment and provide enduring long-term health,the ultimate goals for a sustainable landscape.

关键词： presidential libraries parks sustainable landscapes stormwater management cistern irrigation tank forebay bioswale native ecologies native plants prairies meadows planting soil Texas

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Three-dimensional CFD simulation of inlet structure flow in pumping station based on Eulerian solid- liquid two-phase flow model

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排灌机械工程学报 2015年第6期33卷 494-498页

作者： Mi Zihao Zhou Daqing Mao Yuanting College of Energy and Electrical Engineering Hohai University Nanjing Jiangsu 210098 China Xi'an Thermal Power Research Institute Co. Ltd. Xi'an Shaanxi 710032 China Institute of Hydroelectrical Investigation and Design SPC Chengdu Sichuan 610072 China

Sediment deposition in the pumping station has a huge negative impact on unit *** three-dimensional CFD method has been used to simulate inlet structure flow in pumping station based on the Eulerian solid- liquid two-phase flow model. The numerical results of the preliminary scheme show that sediment deposition occurs in the forebay of pumping station because of poor flow pattern therein. In order to improve hydraulic configuration in the forebay,one modified measure reconstructs water diversion weir shape,and another measure sets a water retaining sill in the approach channel. The simulation results of the modified scheme prove that back flow in the forebay has been eliminated and the sediment deposition region has also been reduced.

关键词： pumping station forebay sediment deposition Eulerian two-phase flow model

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