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水动力学数值模型
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  hydrodynamic numerical model
     Based on hydrodynamic numerical model coupling Donging Lake with Yangtze River,the flood effect in Dongting Lake region by restoring lake area with stopping cultivation for 8 regimes aimed at flood situation in 1998 was simulated.
     应用数值模拟方法,通过建立洞庭湖与长江耦合的水动力学数值模型,针对1998年洪水,模拟研究了洞庭湖区退田还湖的洪水效应,并设计了8种方案分别进行定量评估。
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  “水动力学数值模型”译为未确定词的双语例句
     Through the research of this paper, the following achievement is mainly obtained:1. The hydrodynamic model is developed in this paper, in which Preissmann weighted implicit scheme is used, and three steps method is also applied.
     1、应用Preissmann隐式差分格式建立了一维河网水动力学数值模型,并成功地运用了三级解法进行求解。
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     In this paper,applying mix element numerical method,by the help of numerical calculation software TABS-MD,main using in seaport and riveroutlet,transplanting on Songhua River,two dimensional unsteady hydrodynamics numerical model was established.
     采用三角形和四边形单元的混合模式,运用有限元理论的数值计算方法,借助大型计算软件TABS-MD,应用浅水波理论和水深方向平均化理论对二维天然河道水体方程进行简化,通过构建有限元地形网络,率定模型系数,建立了松花江哈尔滨段二维多边界非定常有限元水动力学数值模型
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  相似匹配句对
     Numerical Simulation Improvement of Frozen Soil's Frost Heave with Hydraulics Model
     基于水动力学模型冻土冻胀数值模拟的改进
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     A NUMERICAL MODEL FOR ADAPTIVE OPTICS SYSTEM
     自适应光学系统的数值模型
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     3. The result of numerical model.
     3.模型数值解。
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     S. models have been found.
     S.模型
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     This improved mixing dielectric model yields an excellent fit to measured data.
     模型
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  hydrodynamic numerical model
Applying a two-dimensional, non-linear hydrodynamic numerical model in combination with a semiempirical equation for bedload sediment transport, the influence of geometry on the formation of sandbanks is investigated.
      
A hydrodynamic numerical model and a tide-surge interaction model are described for the evaluation of storm surges and their interaction with the tides in the Bay of Bengal.
      
A three-dimensional (3-D) suspended sediment model was coupled with a 3-D hydrodynamic numerical model and used to examine the spatial and temporal distribution of suspended sediments in the Satilla River estuary of Georgia.
      
The present work is a test probing the reliability of what was devised by Sterneck (by means of semi-empiric consideration): the hydrodynamic numerical model confirm the Sterneck suggestions.
      


Dongting lake cuts down the flow of flood peak into the lake with 10000 m~(3)/s for many years and is of great importance to prevention of floods in the middle and lower of the Yangtze River. The threat arising from floods is getting serious since 1949, because of more and more silt and large-scaled cultivation on the wetlands. The guiding principles of floods control in the Yangtze River reaches, which refers to restoring lake area with stopping cultivation, has been presented by Chinese government since the...

Dongting lake cuts down the flow of flood peak into the lake with 10000 m~(3)/s for many years and is of great importance to prevention of floods in the middle and lower of the Yangtze River. The threat arising from floods is getting serious since 1949, because of more and more silt and large-scaled cultivation on the wetlands. The guiding principles of floods control in the Yangtze River reaches, which refers to restoring lake area with stopping cultivation, has been presented by Chinese government since the floods of 1998 and the Dongting Lake region is one of important areas to implement the above strategy. Based on hydrodynamic numerical model coupling Donging Lake with Yangtze River,the flood effect in Dongting Lake region by restoring lake area with stopping cultivation for 8 regimes aimed at flood situation in 1998 was simulated. The results show that it is of importance for lowering the water level of flood of the Dongting Lake and reducing the threat from the flood to implement the project of returning being lake from cultivating.

洞庭湖多年平均削减入湖洪峰流量约10000m3/s,这对于保护长江中下游,特别是中游地区的防洪安全十分重要。但由于泥沙的严重淤积,以及湖泊湿地被大规模垦殖,使洞庭湖的调蓄功能下降,江湖洪水威胁加剧。1998年长江流域发生特大洪涝灾害,中央及时提出了"退田还湖、平垸行洪"等长江流域洪水治理的32字指导原则,洞庭湖区是实施该原则的重点地区。应用数值模拟方法,通过建立洞庭湖与长江耦合的水动力学数值模型,针对1998年洪水,模拟研究了洞庭湖区退田还湖的洪水效应,并设计了8种方案分别进行定量评估。结果显示,退田还湖工程的实施,对降低洞庭湖区江湖洪水位,缓解江湖洪水威胁具有重要意义。

Based on numerical imitative methods, a dynamic numerical model was set up between Dongting Lake and Yangtze River, and imitative calculation for wetland recovery and flood effect were conducted for the area around Dongting Lake. The calculation was based on the flood data obtained between 15 th June and 31 th August in 1998, and the water level and runoff data from five hydrological observation stations in Yichuang, Zhijiang, Shashi, Jianli and Luoshan for the Yangtze River, and other six stations in Nanzui,...

Based on numerical imitative methods, a dynamic numerical model was set up between Dongting Lake and Yangtze River, and imitative calculation for wetland recovery and flood effect were conducted for the area around Dongting Lake. The calculation was based on the flood data obtained between 15 th June and 31 th August in 1998, and the water level and runoff data from five hydrological observation stations in Yichuang, Zhijiang, Shashi, Jianli and Luoshan for the Yangtze River, and other six stations in Nanzui, Xiaohezui, Yuanjiang, Lujiao, Yueyang and Chenglingji around Dongting Lake, among which there were only water level data for Yuanjiang, Lujiao and Yueyang. Through the calculation, the effect of cultivation and silts on flooding was estimated. It was revealed that for the period from 1952 to 1998, the effect on the rise of water level was 2 to 10 times higher as by the cause of silts than by cultivation.[HJ1] [HJ]

应用数值模拟技术,通过建立洞庭湖与长江耦合的水动力学数值模型,并利用长江沿江的宜昌、枝江、沙市、监利、螺山和洞庭湖区沿湖的南咀、小河咀、沅江、鹿角、岳阳和城陵矶等水文测站的水文资料,开展洞庭湖区湿地恢复的洪水效应模拟计算,选用1998年6月15日~8月31日洪水资料作为模型计算依据。通过模拟计算,对1952年以来洞庭湖淤积、围垦对江湖洪水的影响进行了定量评估。结果显示,1952~1998年的47年间,洞庭湖湖泊湿地围垦对江湖洪水位升高影响的相对量是湖泊淤积对江湖洪水位升高影响值的2~10倍。

In this paper,applying mix element numerical method,by the help of numerical calculation software TABS-MD,main using in seaport and riveroutlet,transplanting on Songhua River,two dimensional unsteady hydrodynamics numerical model was established.It proved that the selection of roughness coefficient should depend on water depth considering the channel plant cover and geological situation.The roughness coefficient situates in 0.0235~0.080.The range of dynamic viscosity is 1200~10000.Calculating result is satisfy...

In this paper,applying mix element numerical method,by the help of numerical calculation software TABS-MD,main using in seaport and riveroutlet,transplanting on Songhua River,two dimensional unsteady hydrodynamics numerical model was established.It proved that the selection of roughness coefficient should depend on water depth considering the channel plant cover and geological situation.The roughness coefficient situates in 0.0235~0.080.The range of dynamic viscosity is 1200~10000.Calculating result is satisfy stabilization and accuracy.

采用三角形和四边形单元的混合模式,运用有限元理论的数值计算方法,借助大型计算软件TABS-MD,应用浅水波理论和水深方向平均化理论对二维天然河道水体方程进行简化,通过构建有限元地形网络,率定模型系数,建立了松花江哈尔滨段二维多边界非定常有限元水动力学数值模型。得出糙率主要与单元水深和植被状况有关,且沿水流方向呈带状分布,糙率值取值范围为0.023 5~0.080;在同一点的4个动力粘滞系数iεj可取同一值,本区段取值范围为1 200~10 000。模型计算结果满足稳定性和精确性的要求,计算质量流量误差<5%,平均水位误差<5 cm。

 
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