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vertical velocity
    The reliability of the model is proved by the comparison between computation and observation in the following three cases, the distribution of vertical velocity of flow on two dimensional invariant flow, the distribution of vertical velocity of flow and transverse velocity of flow on three dimensional invariant flow in the flume.
    分别对垂向二维恒定流的垂向流速分布,实验水槽三维恒定流的垂向流速分布与横向流速分布进行了计算,将计算结果与相应的实测资料以及理论结果对比分析,证明了模型的可靠性。
    The distribution of velocity vector of ground water in tang ent plane and vertical plane is thus drawn up. According to the magnitude and direction of horizontal and vertical velocity the seepage path is determined ,which prcvides evid ence for the dam grouting treatment .
    从而绘制出地下水流速矢在切平面和垂直面上的分布,依据水平流速和垂向流速的大小和方向确定渗漏路径,为大坝的灌浆处理提供依据。
    This paper briefly introduces the method to determine the following seven parameters of aquifer using radisactive isotope: seepage velocity, coefficient of permeability, direction of flow, vertical velocity of flow (discharge), effective porosity, average void velocity of flow, dispersion coefficient etc. . Also,case histories are enumerated for explanation.
    本文简要介绍了放射性同位素测定含水层渗透流速、渗透系数、流向、垂向流速(流量)、有效孔隙度、平均孔隙流速,弥散系数等七个参数的方法,并列举工程实例说明。
    This paper brefly introduces the method tO determine the following seven parame ters of aquifer using radioactive isotope: seepage velocity, coefficient of permeability direc tion of flow, vertical velocity of now (discharge), effectire porosity. average void velocity of flow, dispersion coefficient etc. .
    本文简要介绍了放射性同位素测定含水层渗透流速、渗透系数、流向、垂向流速(流量)、有效孔隙度、平均孔隙流速,弥散系数等七个参数的方法,并列举工程实例说明。
    Based on the formula of vertical flux of total suspended matters in sea water and according to suspended matter concentration, its vertical flux and settling velocity, a new method evaluating the vertical velocity of sea water has been put out.
    依据海水中悬浮物垂直通量的计算公式 ,提出了一种利用悬浮物含量、垂直通量和静水沉速估算海水垂向流速的新方法。
    We always emphasize that it is important to exactly model waves. Based on the Boussinesq equation, divide the vertical velocity profile into several layers, then integrate the velocity profile in every layer, evaluate the average velocity in the every layer, and use this average velocity to replace every layer velocity ,add up to the interface boundary conditions of each layer to resolve the velocity and free-face,thus acquiring the exact wave model .
    对波浪进行精确的数值模拟一直是人们所关注的,采用在Boussinesq方程的基础上将垂向流速断面进行分层,在每一层中对流速断面进行积分,求得各层平均流速,用此平均流速来代替每一层的流速,并在各层间加上界面边界条件,以求出流速和自由表面位移,这样可以得出精确的波浪数学模型。
    Analysis results show that the flow′s vertical velocity varies notably and will play an important role in sediment transportation under the action of northeast wind of Scale 8 nearby the Huanghua Harbor sea water.
    在NE向8级风作用下,黄骅港附近海域水流的垂向流速变化非常显著,对泥沙输移起重要作用.
 

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