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    Influence of The Weir Height on the Hydraulic Characteristics of the WES Weir
    堰对WES堰水力特性的影响
    WAVE HEIGHT DISTRIBUTION ALONG THE OUTSIDE OF UPRIGHT BREAKWATER
    沿直立堤外侧波分布
    THE HEIGHT OF O+-H+ TRANSITION IN THE TOPSIDE IONOSPHERE AT SOLAR MAXIMUM
    太阳活动年上电离层中O~+—H~+离子过渡度的特征
    The experiments are carried out with wave height ranging from 10cm to 20cm, wave peak period ranging from 1. 0s to 2. 0s and the relative clearance of the model ranging from 0.1 to 0. 4. The properties of the time series of the wave impact pressures on different shore connecting conditions are investigated.
    入射波靶谱为Jonswap谱,入射波H1/3分别为10、15和20cm,谱蜂周期Tp分别为1.0s、1. 2s、1.5s和2.0s,码头面板模型距离静水面的距离s和入射波H1/3的比值s/H1/3分别为0. 1、0.2、0.3和0.4。
    Based on the Boussinesq module in MIKE21 software system, distorted models of different distortion ratio under the main condition of refraction or diffraction are established and the numerical simulation of wave height distribution in the harbours of different distortion ratio models are done by the similitude relationship of the wave movement.
    基于MIKE21软件系统中的Boussinesq模块,应用波浪运动相似关系,建立了以波浪折射和绕射为主的多个不同变率的变态模型,并对不同变率模型的港内波分布进行了模拟。
    Two Methods for Determining the Orthometric Height with High Accuracy
    精度推求正的两种方法
    Comparison of three commonly used methods for calculation of design wave height
    三种设计波计算方法比较
    Wave height collection and test system in hydrulic model ship navigation and its application
    水工模型试验船模通航波采集测量系统及其应用
    Measurement and Analysis of Ionospheric Virtual Height With High Precision
    电离层虚精度测量与分析
    Similarly, it could be concluded that parametric model and probabilistic model have been used for studying breaker energy loss of irregular waves on the basis of detailed analysis of the existing achievements concerning wave height distribution, wave breaking probability and wave spectra transformation of irregular waves in surf zone.
    在不规则波方面,将已有的研究不规则波破碎模型分为两类:参数法和概率法。 本论文详细归纳了已有的不规则波破碎带内波分布、破碎概率及波浪谱在破碎带内的变形的研究成果,通过物理模型试验分析,给出参数法中所需要的破碎带波分布和破碎概率。
    In the dissertation, the changing law of wave height before and after the breakwater and the pore pressure in it are discussed, also the details of the velocity of the whole flow field are described.
    本文通过数模方法,探讨了线性规则波和椭圆余弦波作用下潜堤前后的波变化规律、潜堤内部的孔隙流压力变化规律以及整个波浪与孔隙流的流场变化细节。
    The results of the statistical analysis of data on tweeks from December 1975 to August 1978 at Beijing (Geomag. Lat. 29°N) are summarized as follows: (1) virtual height is about 85 km during the day, and 100 km during the night;
    本文利用北京台(磁纬29°N)1975年12月到1978年8月期间的吱声资料进行分析,得到了低电离层等效度和阶模出现率的初步结果,即:(1)等效度,白天约为85公里,夜间约为100公里;
    The limits of free disch- arge for the five cases can be expressed as follows: 1.For a two dimensional weir,P/H≥2/3~(1/2)-1≈0.15 where P is the height of the weir crest,and H is the head on the weir.
    五种堰型的溢流条件如下:1.二元堰顶抬的堰比为 P/H≥2/3~(1/2)-1≈0.15;
    The analysis shows that the probability density of wave surface amplitude basically corresponds tonormal distribution and that of mean wave height approximates Rayleigh distribution.
    分析表明,波面振幅的概率密度基本符合正态分布,平均波的概率密度接近瑞利分布。
    The parametric studies have been carried out at a range of ratios of wave height in front of paddle to water depth Ho/d from 0. 1 to 0. 3, with water depth/wave length ratio d/L from 0. 124 to 0. 219. Wave height, wave pressure distributions along the channel and velocity fields are obtained for both absorbing wave maker and conventional wave maker.
    文中在H_0/d=0.1~0.3,d/L=0.124~0.219的范围内对数值波浪水槽的波浪特性进行了标定,给出了波及波压力峰值沿水槽的分布,波面与波压力的历时曲线及不同时刻数值波浪水槽的流场。
    In addition, according to the intense correlation of the Bouguer with height and four kinds of formulas, the gravity value at the top of Zhumulangma peak is estimated to be 976980×10 -5 m·s 2 with mean error 6.5×10 5 m·s 2 . The result can provide the necessary data for determining precisely the geoid and orthometric height of Zhumlangma peak.
    其次,根据Δgf与程相关性极强(关联度达0.96~0.97)的特点与4种有关的公式,有效地推估了珠峰顶上的重力值,该值为976980×10-5m·s-2,其平均误差为±6×10-5m·s-2。 这一结果可为精确确定珠峰的大地水准面和正提供必要的数据。
    The Dachaoshan hydropower project has adopted the flaring pier stepped dam face and bucket combined energy dissipator in its design, and the prototype observation of overflowing hydraulics under the design water level was carried out in June, 2002. The streamwise pressure, bottom flow velocity and aeration over the 4 steps along the stepped dam face were measured, and the data on operations under a dam height of over 100m and a per unit width discharge of 165m3/s were obtained.
    大朝山水电站采用宽尾墩阶梯式坝面及戽式联合消能工的设计,于2002年6月进行了设计水位下的过流水力学原型观测,针对阶梯式坝面开展了沿程4个台阶上的压力、底流速和掺所的量测,取得了在100m级坝、单宽流量165m3/s·m条件下的运行资料。
    This article analyses the average height of wave, the energy of wave, and their changeable rules with Froude, distance and frequency.
    研究分析了水流的平均波、波动能量、各波动要素随流程和随佛氏数的变化规律,以及波动沿频域的分布情况等等。
    The conclusions are: 1) Models of wind-wave height (H) versus wind speed (v) , wind fetch length ( F) and water depth (d) are different in the littoral zone and in pelagic zone,but they could be expressed as where a1-a8 are 0.217456, 1, 0.15 , 0.6, 0.09, 0.6, 1.0,0.0052 in pelagic zone respectively.
    误差分析结果显示:离岸距离大于1km区域的参数a1-a8的取值分别为0.217456、1、0.15、0.6、0.09、0.6、1.0、0.0052,模式估算平均波的误差小于24%;
    Na centroid height reaches a maximum value in August, which is about 1.4 km higher than the yearly average value (91.2 km);
    质心度最大出现在8月,比年平均度91.5km1.4km,最小值出现在5月,为91.2km;
 

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