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- Based on model test and the scene investigation, the flow structure around submerged spur dikes and evolution characteristic of river bed are researched . 根据水工模型试验研究和工程现场考察,对漫水丁坝附近的水流结构,河床变形的特点进行了分析和研究;
- Local scour on the head of a spur dike is disadvantageous to the structures. 丁坝坝头的局部冲刷对丁坝的整治效果产生不利影响。
- There are horse shoe vortex around spur dikes and Karman vortices behind spur dikes. 发现在丁坝的上游会形成马蹄涡 ;在丁坝的背风面会形成卡门涡 .
- By large amounts of hydraulic model test,the paper analyzed the flow structure around submerged spur,and determined its computation formular of erosion depth for reference. 通过大量的水工模型试验对漫水丁坝周围的水流结构进行分析,并确定出漫水丁坝冲刷深度计算公式,经实体工程验证,公式具有良好的精度和可靠性,可作为设计时的参考。
- The flow patterns close to the non-submerged spur dikes are discussed on the basis of flume experiment. 以水槽试验为基础,对非淹没丁坝附近的水流现象进行了定性描述。
- Test Study on Hydraulic Calculation for Submerged Serial Spur Dikes 淹没丁坝群水力计算的试验研究
- The dye injection and oil\|film method together with electromagnetic velocimeter are applied to measure the flow field around spur dikes. 研究分析了丁坝和护坦在沿河林区公路路基防护中的作用、防护原理、设置方法、应用条件和有效性问题。
- Jing Peng, Nobuyuki Tamai, Yoshihisa Kawahara and G.W.Huang, (1998): Numerical modeling of local scour around spur dikes, Proc. 彭静,河原能久,丁坝群近体流动结构的可视化实验研究,水利学报,2000.;2。
- The dye injection and oil-film method together with electromagnetic velocimeter are applied to measure the flow field around spur dikes. 本文介绍了用颜料示踪和最新的油膜技术对流动进行可视化记录以研究淹没丁坝群的近体流场分布的试验结果。
- The results from the experiments showed that the channel bed stability of gabion spur dikes is higher than that of conventional spur dikes. 试验结果发现,丁坝种类以蛇笼透水丁坝之河床稳定性较传统不透水丁坝为佳;
- According to the data of equilibrium scour experiments, the estimating equations for scour depth of abutments and spur dikes are established and applied. 根据本文和近年来国外发表的长历时平衡冲刷数据,应用图解和回归分析,建立了桥台及丁坝平衡冲刷深度公式。
- With the aid of model experiment and through theoretical analysis, turbulent characteristics of flow around spur dike are studied. 摘要通过水槽试验,结合理论分析,研究丁坝附近的水流紊动。
- By use of 3-D ultrasonic doppler velocimeter,the turbulence characteristics of water flow in the spur dike head and backflow region are observed and analyzed systematically. 利用三维超声学多普勒流速仪对丁坝坝头附近水流和回流区水流的紊动特性进行了系统的观测和分析,得到了丁坝坝头和回流区的水流特性及紊动动能的分布规律。
- The outline tests on the alignment of spur dikes in the flume with repeated tidal flow were carried out based on the alignment of the regulation structures in the north trough of the deep waterway in the Yangtze Estuary. 摘要结合长江口深水航道治理二期工程北槽中整治建筑物的布置形式,在潮汐往复流水槽中进行了丁坝群不同布置形式的概化试验。
- Jing Peng, Yoshihisa Kawahara and Nobuyuki Tamai (1998), Evaluation of k-e type turbulence models in simulating flow around spur dikes, 1th symposium of turbulence shear flow phenomena, U.S.A. 彭静,玉井信行,河原能久,丁坝坝头冲淤的三维数值模拟,水动力学研究与进展,1999。
- Flow Pattern Close to the Non-Submerged Spur Dikes 非淹没丁坝附近的水流流态
- This non sequitur invalidates his argument. 他不根据前提推理因而论证无效。
- Measured And Simulated Flow Near Spur Dikes 丁坝附近实测和模拟水流
- Formula of Local Scour Depth around Spur Dikes 丁坝局部冲刷深度的计算
- The submarine submerged to avoid enemy ships. 该潜艇潜入水下以躲避敌舰。