淹没出流,submerged discharge
1)submerged discharge淹没出流
1.A study on the calculation of discharging capacity of sluice under highlysubmerged discharge;泄水闸大淹没出流的泄流计算商榷
2.It has realistic significance to research on using working gate withsubmerged discharge to measure water in canal for slab irrigation district.对于平原灌区,研究利用以淹没出流为主的工作闸门进行渠道量水具有现实意义。
2)submerged divergent outflow淹没扩散出流
1.Study on unstable phenomenon ofsubmerged divergent outflow;淹没扩散出流不稳定现象研究
3)Flood leaching淹没浸出
4)submerged bottom floor淹没底流
1.With the change of in-take energy,the flow patterns in the stilling basin are:mixed flow,submerged mixed flow,submerged bottom floor and far-forth drove bottom floor.现对跌坎式底流消能工消力池内水流流态的演变进行了初步分析,随着入池能量的变化,消力池中会产生混合流、淹没混合流、淹没底流以及远驱底流流态。
5)submerged jet淹没射流
1.Application of PIV forsubmerged jet in water cushion pool;PIV技术在水垫塘实验模型淹没射流中的应用
2.Numerical simulation and study of energy dissipation for multilayer submerged Jet within a water cushion pool;水垫塘多层淹没射流数值模拟及消能研究
3.The hot-film anemometer is applied to measure the time-average velocity and velocity fluctuation distributions of thesubmerged jet along its flow course at the bottom of scour pool.为探讨挑射水流在冲坑内的基本特征与消能机理,首次利用热膜测速技术量测定床冲坑中淹没射流的沿程时均流速和脉动流速分布,并同时量测沿坑底的压强场,给出入射区、冲击区和壁射流区3个子区的流速和压强的变化规律;计算坝面摩阻消能、空中扩散消能和冲坑水垫中紊动剪切消能3部分的消能效率。
英文短句/例句
1.Study on Hydrokinetics of the Unsubmerged Premixed Abrasive Water Jet前混合磨料的非淹没射流的水动力学研究
2.Study on Relationship between Solid Particles and Bubble in Submerged Water Jets;淹没射流中磨料与空泡的相互关系研究
3.Experimental & Numerical Study on the Characteristics of the Plunging Pressure Caused by Submerged Plunging Jet with High Velocity;高速淹没射流冲击压强的试验和数值模拟研究
4.Numerical Simulation of Flow Field in Cylindrical Chamber Injection Allocation with Submerged Jet带有淹没射流的圆柱腔室分层配注器中流场的数值模拟
5.The flow characteristics, eddy structure and energy dissipated mechanism of multi-horizontal submerged jets (MHSJ) are studied by means of 3-D numerical simulation.采用三维数值模拟，研究了多股多层水平淹没射流的流动特性、漩涡结构和消能机理。
6.Experimental Research of Metal Material in Submerged Abrasive Waterjet Cutting淹没磨料射流切割金属材料特性分析
7.SIMULATION INVESTIGATION OF SUBMERGED JET FLOW FROM A STAR-SHAPED NOZZLE淹没条件下星形喷嘴射流流动特点的模拟研究
8.There are many influence factors in submerged abrasive waterjet erosion performance.影响淹没磨料射流冲蚀性能的因素很多。
9.The Numerical Simulation Analysis and Experimental Research on Submerged AWJ;淹没条件下磨料射流数值仿真分析及实验研究
10.Modulation Study on Unsubmerged Cavitating Jet from Nozzle with a Centre Cylinder含中心体喷嘴非淹没空化射流调制研究
11.Experimental Research on Parameters of Nozzle Slotted in Non-submerged High Pressure Swirling Jet非淹没高压旋转水射流喷嘴割缝参数试验研究
12.Experimental study on cutting performance by of ultrahigh pressure abrasive waterjet in submerged environment淹没状态下超高压磨料水射流切割实验研究
13.Simulation and Experimental Validation on the Flow Field Inside and Outside the Nozzle of Non-submersed Precision Micro Abrasive Waterjet;非淹没式精密微磨料水射流流场仿真及实验验证
14.River often overflow their bank.河流常常淹没河岸。
15.suspended bowl submersible mixed flow pump吊碗型淹没式混流泵
16.The farm was engulfed in drifting sands.该农场被流沙淹没了。
17.Experimental research of ultra-high pressure abrasive waterjet cutting rock in submerged environment淹没条件下超高压磨料水射流切割岩石的实验研究
18.Experimental study on effect of submerged abrasive waterjet on cutting efficiency of metal material淹没磨料射流对金属材料切割性能影响的实验研究
相关短句/例句
submerged divergent outflow淹没扩散出流
1.Study on unstable phenomenon ofsubmerged divergent outflow;淹没扩散出流不稳定现象研究
3)Flood leaching淹没浸出
4)submerged bottom floor淹没底流
1.With the change of in-take energy,the flow patterns in the stilling basin are:mixed flow,submerged mixed flow,submerged bottom floor and far-forth drove bottom floor.现对跌坎式底流消能工消力池内水流流态的演变进行了初步分析,随着入池能量的变化,消力池中会产生混合流、淹没混合流、淹没底流以及远驱底流流态。
5)submerged jet淹没射流
1.Application of PIV forsubmerged jet in water cushion pool;PIV技术在水垫塘实验模型淹没射流中的应用
2.Numerical simulation and study of energy dissipation for multilayer submerged Jet within a water cushion pool;水垫塘多层淹没射流数值模拟及消能研究
3.The hot-film anemometer is applied to measure the time-average velocity and velocity fluctuation distributions of thesubmerged jet along its flow course at the bottom of scour pool.为探讨挑射水流在冲坑内的基本特征与消能机理,首次利用热膜测速技术量测定床冲坑中淹没射流的沿程时均流速和脉动流速分布,并同时量测沿坑底的压强场,给出入射区、冲击区和壁射流区3个子区的流速和压强的变化规律;计算坝面摩阻消能、空中扩散消能和冲坑水垫中紊动剪切消能3部分的消能效率。
6)submerged jets淹没射流
1.Numerical simulation of 3-D flow field of multi-horizontalsubmerged jets into plunge pool;多股水平淹没射流水垫塘流场数值模拟
2.A large number of test and research results of the pool with several horizontalsubmerged jets showed that the better shape of chute channel is equal-wide or micro-contraction.多股水平淹没射流消力池的大量试验研究结果表明:泄槽的体形以等宽或微收缩为宜;水平方向窄而垂直方向厚的水舌适应水位变化的稳定性较好,能始终保持水平淹没射流状态;表、中孔的最优坎高差应大于中孔水流的主流水深,以使表层水跃的回流漩滚区向两侧表孔溢流面充分扩散,从而减弱或消除中孔表层水跃的横轴漩滚。
延伸阅读
孔口出流流经挡水壁上孔口的水流。常见的孔口形状为矩形和圆形。当孔口高度e与孔口水头H（上游水面至孔口中心的高度）之比时为小孔口；当时为大孔口（图1）。当孔壁厚度不影响孔口出流时为薄壁孔口；反之为厚壁孔口。水利工程中常见的闸门下泄流称为闸孔出流（图2）。 为保证闸孔出流，e/H必须小于或等于0.65,否则闸门下缘脱离水面而成为堰流。当下游水位不影响泄流量时为自由出流(图1a、图2a);反之为淹没出流（图1b、图2b）。胸墙挡水时的堰顶溢流和坝体短孔泄流等亦属孔流。孔口自由出流的流量为：式中A为孔口面积；g为重力加速度;为孔口总水头，其中H为孔口水头，v0为孔口上游行近流速，α为动能校正系数(见水流能量方程);┢＝εφ为孔口流量系数,其中ε＝Ao/A为孔口收缩系数(Ao为孔口收缩断面C-C的面积)，φ为孔口流速系数,与孔口对水流的阻力有关。对于薄壁圆形小孔口，ε＝0.63～0.64，φ＝0.97～0.98，μ＝0.60～0.62。当下游水位触及孔口底缘时，流态即有改变，下游水位高于孔口上缘时为孔口淹没出流(图1b)。孔口淹没出流的流量为：式中ｚ为孔口上下游水位差；μs为孔口淹没出流流量系数。闸孔自由出流的流量为：式中B为闸孔宽度；e为闸孔高度；为闸孔总水头,H为闸孔水头(上游水面至闸底板的高度);μ＝ε′φ为闸孔流量系数；h0=ε′e为闸孔收缩断面C-C的水深。其中为闸孔垂向收缩系数,与有关；φ为闸孔流速系数，与闸孔形式有关。对于宽顶堰（见堰流）上平面闸门下的闸孔：当＝0～0.65时，ε′=0.611～0.673，φ＝0.85～1.0。当闸孔下游水深 t大于收缩断面水深ho的跃后水深hc2（见水跃）时为闸孔淹没出流。其流量为：Qs=σQ式中Q为H及e值相同时的闸孔自由出流流量；σ为考下游水位影响的闸孔淹没系数，与(t-hc2)/(H-hc2)有关。参考书目华东水利学院编：《水力学》，第2版,下册，科学出版社，北京，1983。武汉水利电力学院编：《水力学》，水利电力出版社，北京，1960。
