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流速重分布
相关语句
  redistribution of velocity
     The calculated results show that the established mathematical model can satisfactorily simulate the variation of water surface pattern and redistribution of velocity in bend flow.
     计算和验证表明:建立的弯道水流数学模型能较好地模拟弯道水面形态变化和流速重分布
短句来源
     This paper presents an experimental study on the flow characteristics on bend channel flows by means of the advanced three-dimensional acoustics Doppler current meter. The water surface cross circulation and redistribution of velocity in channel bends were summarized; and the effects of spur-dikes on flow state were analyzed.
     采用三维声学多普勒流速仪对弯道内有、无丁坝两种工况下的水流特性进行了系统的试验研究,总结了弯道水流水面横比降、横向环流、流速重分布等特性,重点分析了丁坝对弯道水流流态的影响,进一步证实了丁坝的护岸机理,为相关的工程实践提供理论依据。
短句来源
  “流速重分布”译为未确定词的双语例句
     Bend flow momentum characteristics is mainly concentrated in the surface sloop, cross circulation and the velocity re-distribution.
     弯道水流的动力特性主要集中在水面横比降、横向环流、流速重分布等方面。
短句来源
  相似匹配句对
     Symmetry; 3. The velocity of flow wasn't stable ;
     3.流速不稳定;
短句来源
     2) Velocity profile method;
     2) 流速剖面法;
短句来源
     Method to Determine the weight Distribution of Codes
     码重分布的计算
短句来源
     Bend flow momentum characteristics is mainly concentrated in the surface sloop, cross circulation and the velocity re-distribution.
     弯道水流的动力特性主要集中在水面横比降、横向环流、流速重分布等方面。
短句来源
     The calculated results show that the established mathematical model can satisfactorily simulate the variation of water surface pattern and redistribution of velocity in bend flow.
     计算和验证表明:建立的弯道水流数学模型能较好地模拟弯道水面形态变化和流速重分布
短句来源
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The essential features of bend flow, including lateral slope of water surface, lateral circulation flow, redistribution of velocity, disaffiliating flow, bend shear stress and bend local head losses, etc., and their present research situation, are summaried. A 2-D depth-average mathematical model of bend flow under polar coordinates was established. By using this model, the calculation of two examples was conducted, i. e., the 180°rectangle bend channel model flow and the Tiaoguan curved river reach of Yangtze...

The essential features of bend flow, including lateral slope of water surface, lateral circulation flow, redistribution of velocity, disaffiliating flow, bend shear stress and bend local head losses, etc., and their present research situation, are summaried. A 2-D depth-average mathematical model of bend flow under polar coordinates was established. By using this model, the calculation of two examples was conducted, i. e., the 180°rectangle bend channel model flow and the Tiaoguan curved river reach of Yangtze River in prototype. The calculated results show that the established mathematical model can satisfactorily simulate the variation of water surface pattern and redistribution of velocity in bend flow.

总结了弯道水流水面横比降、横向环流、流速重分布、分离流及弯道切应力和局部阻力等基本特性及其研究现状;建立了极坐标下沿水深平均的弯道水流平面二维数学模型;并进行了试验室180°矩形弯道和长江调关河弯两个弯道水流的实例计算。计算和验证表明:建立的弯道水流数学模型能较好地模拟弯道水面形态变化和流速重分布

This paper presents an experimental study on the flow characteristics on bend channel flows by means of the advanced three-dimensional acoustics Doppler current meter.The water surface cross circulation and redistribution of velocity in channel bends were summarized;and the effects of spur-dikes on flow state were analyzed.Furthermore,the theory of the protection on bank by spur-dikes was verified.The research result would provide references on other relative projects.

采用三维声学多普勒流速仪对弯道内有、无丁坝两种工况下的水流特性进行了系统的试验研究,总结了弯道水流水面横比降、横向环流、流速重分布等特性,重点分析了丁坝对弯道水流流态的影响,进一步证实了丁坝的护岸机理,为相关的工程实践提供理论依据。

The depth-averaged 2-D mathematic model for bend-flow under orthogonal curvilinear coordinate system is proposed.The hybrid finite analytic method with non-staggered grid was applied to solve the flow in mildly and sharply curved channel.With centrifugal effect,there is a shift of the maximum main velocity along the mildly curved channel bend from the inner-bank region toward the outer-bank region,and the water level rises at the outer bank and falls at the inner bank.The experimental data and other numerical...

The depth-averaged 2-D mathematic model for bend-flow under orthogonal curvilinear coordinate system is proposed.The hybrid finite analytic method with non-staggered grid was applied to solve the flow in mildly and sharply curved channel.With centrifugal effect,there is a shift of the maximum main velocity along the mildly curved channel bend from the inner-bank region toward the outer-bank region,and the water level rises at the outer bank and falls at the inner bank.The experimental data and other numerical results are given to demonstrate the capabilities of the mathematical model.So the hybrid finite analytic method combined with orthogonal curvilinear coordinate system can satisfactorily simulate the variation of water surface pattern and redistribution of velocity in bend flow.

建立了基于曲线拟合坐标系下的平面二维弯道水流数学模型,采用混合有限分析法进行了离散,对强弱弯曲河道矩形断面水流进行了数值计算.弱曲率弯道主流速度沿弯道外岸逐渐增加,在离心力作用下主流最大流速由凸岸逐渐向凹岸转移;且弯道水流的水面为一扭曲面,凹岸的水位线常形成上凸曲线,凸岸的水位线常形成下凹曲线.水面形态和流速重分布与相关文献实验结果符合良好,表明混合有限分析法与曲线拟合坐标的结合是一种可适用于弯道水流计算的有效格式.

 
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