| 1. | Study on flow characteristics in water cushion pool and mechanism of energy dissipation 水垫塘的水流特征和消能规律研究 |
| 2. | Experimental research on uplift force acted on a piece of floor of arch invert water cushion pool and estimation to limit thrust load at skewbacks 反拱水垫塘底板块上举力变化规律的试验研究 |
| 3. | The optimization of laying out these structures , paths of flow jets and a water cushion pool for a high arch dam is first discussed systematically in this paper 本文首次系统地对高拱坝坝身泄洪孔口、泄流过程以及坝下水垫塘的布置优化问题进行了讨论。主要内容和成果有1 |
| 4. | By the scale of 1 : 35 flood - relief model test , combined the structures built and the pump entrance will be built of baishan dam , to decide the overall arrangement of the water cushion 通过1 : 35比尺的整体泄洪模型试验,结合白山已建的建筑物及筹建的白山大泵进水口,选定水垫塘的总体布置方案。 |
| 5. | Cfx software is used to simulate flow fields of water cushion pool . contour stream line , vortex and kinetic energy in water cushion pool are found and offered as visualization form . the results of numerical simulation and piv are analyzed and compared in this paper 使用数值软件( cfx )对此水工实验模型的淹没射流流场进行了数值模拟,得到水垫塘内的速度场、等流函数线图,将这些计算结果以可视化结果的形式给出。 |
| 6. | Abstract : through study on energy dissipation of goupitang project on the wu - jiang river , the velocity field in the water cushion pool downstream ski - jump or drop was measured by hot - film anemometers on a fine model with scale 1 380 文摘:结合乌江构皮滩水利枢纽工程消能问题研究,用热膜流速仪在比尺为1 380的精细模型上量测了拱坝挑跌流在水垫塘内的流速场,并由试验成果分析了淹没射流在水垫塘内的消能过程,计算了消能率。 |
| 7. | For two up and down jets plunging into a cushion pool , two factors of up depth and down depth of water cushion are first introduced actually , then the methods calculating the reasonable depth of cushion pool and the reasonable distance between up jet and down jet are introduced 针对上、下双股水舌入射水垫塘时水垫塘底板上的压力变化规律,首次根据射流理论提出了上、下水垫深度的概念及其计算方法,并进而提出了计算水垫塘合理深度及水垫塘内水舌合理入水间距的方法。 |
| 8. | Air is entrained as water jetting into water cushion pool , the gas - liquid two phase flows field are formed . the every phase velocity field are measured by using piv and ptv ( particle tracking velocimetry ) method in the course of jet angle 75and60 in gas - liquid flows of water cushion pool . image house of two phase flows are set up 西安理工大学硕士学位论文使用数字图像处理技术中的piv和ptv测速技术就射流入水角75度和60度两种情况分别测量了水垫塘模型水气两相流流场的各相速度场,建立了相应的两相流流态图像库。 |
| 9. | The main contents are as follows : in order to finish this work well , the author collected the basic parameters of water cushion in china and foreign countries , and analyzed the questions and shortcoming in the designing of cushion in domestic and abroad , and summarized the design experiment of xiao wan hydraulic power station and ertan hydraulic power station in china , finally the main controlling design parameters of baishan water cushion , that is the allow dynamic impact water pressure and unit water consumed energy rate were asserted 具体内容如下:为了做好白山水垫塘设计,本文通过收集国内外水垫塘设计的基本参数,分析水垫塘设计存在的问题及不足,总结国内小湾、二滩工程的经验,确定白山水垫塘设计主要控制参数即允许动水冲击压力及水垫塘单位水体消能率。 |
| 10. | To design the water cushion of baishan arc dam , the design experiment of ertan hydraulic power station , xiao wan hydraulic power station were refereed . through large amount of scientific experiments and theoretical calculation , and the design coefficients of water cushion in domestic and abroad were summarized , then the design layout of the baishan cushion was worked out at last 本文针对白山拱坝水垫塘方案设计,参考国内二滩、小湾等工程设计经验,通过大量的科学试验和理论计算,总结国内外的水垫塘设计参数,最后确定了白山水垫塘的设计方案。 |