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水动力弥散     
相关语句
  hydrodynamic dispersion
     Progress in study of hydrodynamic dispersion coefficient in soils
     土壤中水动力弥散系数的研究进展
短句来源
     IN-LAB DETERMINATION OF SOIL HYDRODYNAMIC DISPERSION COEFFICIENT
     土壤水动力弥散系数的室内测定
短句来源
     On the basis of theoretical analysis the formula for calculating the solute hydrodynamic dispersion of unsaturated soil is also attained.
     对于一维非饱和弥散实验 ,在分析溶质的水动力弥散理论的基础上 ,推导出求解非饱和土壤水动力弥散系数Dsh (θ)的计算公式 .
短句来源
     Three methods of determing the exchang rate between solid and liquid phases in the groundwater hydrodynamic dispersion equation
     地下水水动力弥散方程中处理固相与液相间转化量的三种方法
短句来源
     Considering the influences of uncertain factors of hydrodynamic dispersion coefficient and measurement error on the reliability of contaminant concentration estimation, a discussion was made on the reliability of contaminant transportation in groundwater by use of the niche-hybrid genetic algorithm, and the direct and inverse analysis of contaminant concentration was also performed under the reliability condition, providing more information for decision-making in groundwater environmental protection and regulation.
     在地下水污染物迁移问题中,考虑水动力弥散系数及测量误差的不确定性因素对浓度估计可靠性的影响,采用小生境混合遗传算法,对地下水污染物迁移的可靠性进行探讨,并在可靠性条件下进行污染浓度正反问题分析,为地下水环境保护和调控提供更多的决策依据。
短句来源
更多       
  dynamic dispersion
     For predicting and controlling groundwater pollution the dynamic dispersion parameter is an important factor, which could be achieved by many methods thyough dispersion test, but the flow direction of groundwater is a prerequisite.
     地下水动力弥散参数,对预测和控制地下水污染具有重要意义。 通过弥散试验,能求出它们的方法有多种,可均要知道地下水流向。
短句来源
     Groundwater quality model is composed of problems of groundwater flow and dynamic dispersion.
     地下水水质模型是由水流问题和水动力弥散问题耦合而成。
短句来源
     According to the data of 1\|D saturated dispersion experiment the saturated dynamic dispersion coefficient and retardation factor are obtained using simplified method.
     根据一维饱和弥散实验结果 ,由相应的解析解 ,用简化计算方法求得饱和水动力弥散系数Dsh 和阻滞因子R ;
短句来源
     The method of Monte-Carlo Stochastic Difference is in troduced and applied to the stochastic mathematical model for a two-dimensional dynamic dispersion experiment. The calculation results are close to the measured data. The said method can be used to solve the model of stochastic water quality .
     本文介绍了Monte Carlo随机差分法 ,并把它应用到实验室做的二维水动力弥散实验的随机水质数学模型中 ,计算结果与实测数据比较吻合 ,说明Monte Carlo随机差分法可以用来求解随机水质模型。
短句来源
  hydrodynamic diffusion
     Determination of Hydrodynamic Diffusion Coefficient for Soils in Loess Aerated Zone
     黄土包气带土壤水动力弥散系数的测定研究
短句来源
     The paper is to describe the method of determining hydrodynamic diffusion coefficient for soils in loess aerated zone and report the results measured with horizontal soil column, with the values of hydrodynamic diffusion coefficient calculated with hydro characteristic curve also given.
     本文主要介绍了黄土包气带土壤水动力弥散系数的测定方法及用水平土柱法的测量结果 ,同时也给出了用水特征曲线计算法得出的水动力弥散系数。
短句来源
  dynamical dispersion
     Application of the Method of Monte-Carlo Stochastic Difference to the Two-dim ensional Dynamical Dispersion Experiment
     Monte-Carlo随机差分法在二维水动力弥散实验中的应用
短句来源
     Stochastic Mathematical Model of Two-Dimension Dynamical Dispersion Experiment
     二维水动力弥散的随机数学模型
短句来源
     In this article, based on a two-dimension dynamical dispersion experiment and the information supplied by the experiment, we first establish a stochastic mathematical model of the two-dimension dynamical dispersion.
     首先以二维水动力弥散实验为基础 ,根据实验所提供的信息 ,建立了二维水动力弥散实验的随机水质数学模型 .
短句来源

 

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      hydrodynamic dispersion
    The effects of advection, hydrodynamic dispersion, and dilution are elaborated as physical processes that effect the movement of contaminants through groundwater in permeable rocks.
          
    Simple one-dimensional numerical models are presented for coupled advection-hydrodynamic dispersion and kinetically controlled oxidatioin-reduction reactions in graphite-free porous media containing magnetite coexisting with silicate assemblages.
          
    Rate constants for reactions in flowing solutions in soil can be calculated from extents of reactions as functions of depth, rates of flow, effective biomass of microbes and independent measurements of hydrodynamic dispersion.
          
    The aggregates were studied under the condition of stasis, slow flow and at shear rate of their hydrodynamic dispersion.
          
    With decreasing temperature red cell aggregates become more resistant to hydrodynamic dispersion and they become more prone to growing under low shear stress.
          
    更多          
      dynamic dispersion
    Determination of air movement in stored grain as a factor in dynamic dispersion and distribution patterns of gaseous pesticides
          
    Dynamic dispersion curves for non-homogenous, anisotropic beams with cross-section of arbitrary geometry.
          
    Generic schematic of the broad-band dynamic dispersion compensation device using nonlinear fiber.
          
    In summary, we have described the design and performance of the fiber-based nonlinear dynamic dispersion compensator.
          
    Schematic of dynamic dispersion compensating AWG, using parabolic and trapezoidal active regions in the Fourier plane.
          
    更多          
      hydrodynamic diffusion
    The turbulent hydrodynamic diffusion may essentially change the kinetics of the elementary chemical reactions.
          
    We explain in particular in the proof of our convergence theorem why it may be interesting to stabilize the magnetic equation as soon as the hydrodynamic diffusion is small and even if the magnetic diffusion is large.
          
    We study the fluctuation of one dimensional Ginzburg-Landau models in nonequilibrium along the hydrodynamic (diffusion) limit.
          
    In this research experiments were performed to examine the hydrodynamic diffusion of spherical particles in a highly filled suspension.
          
    The hydrodynamic diffusion modes of an equimolar methane-ethane mixture have been investigated by dynamic light scattering.
          
    更多          
      其他


    Experiments on hydrodynamic dispersion in saturated and unsaturated soils were conducted. It is shown that there exists immobile water for the experimental soils. The immobile water fraction should be taken into account in the hydrodynamic dispersion equation. A numerical model has been proposed for the solution of one-dimensional unsaturated dispersion equation. The numerical model is shown to be very effective. Dispersion coefficients are obtained from the experimental results.

    本文通过室内对中壤土及轻壤土饱和、非饱和水动力弥散实验,认为对实验土样不动水体是存在的,在描述弥散过程的数学模型中应考虑不动水体的作用。根据一维饱和弥散实验结果,由相应的解析解,用单纯形法反求了参数;对于一维非饱和弥散实验,提出了一种求解水动力弥散方程的数值方法,并用试算法反求了实验土样的弥散参数。

    In this paper,cubic spline method combined with difference is usedfor solving water quality model of hydrodynamic dispersion,and the res-ults are compared with that of elements equilibrium and finite element.The facts indicate that cubic spline method is effective and developablefor restraint numerical dispersion in numerical simulation of groundwaterpollution.

    本文采用了三次样条函数和有限差分相结合的方法对水动力弥散方程进行求解,并和多元均衡法及有限元方法的结果进行比较,事实表明三次样条方法在地下水污染数值模似中,对抑制数值弥散是一种更有效的、颇有发展前途的好方法.

    In this paper, a new methed to calculate the hydrodynamic dispersion parameters under one-dimensional unsatuicd condition has been developed by means of mass conservation. According the soil water flow condition, four formulas for calculating the Parameters of dispersion have been acheived. By using the Steady evaperation experiments. We Calculated the dispersion Parameters of wehe finesandy, and with the parameters calculated and numerical method, compared the numerical datas and experimental datas, result...

    In this paper, a new methed to calculate the hydrodynamic dispersion parameters under one-dimensional unsatuicd condition has been developed by means of mass conservation. According the soil water flow condition, four formulas for calculating the Parameters of dispersion have been acheived. By using the Steady evaperation experiments. We Calculated the dispersion Parameters of wehe finesandy, and with the parameters calculated and numerical method, compared the numerical datas and experimental datas, result indicated that agrement is well.

    本文基于质量守恒原理,推导出了一种计算水动力弥散系数的方法。对四种不同水流及初始盐分浓度条件下的弥散系数计算给出了具体公式和试验方法。通过稳定蒸发试验求出了卫河粉砂土的水动力弥散系数。利用该参数和数值模拟对相同土壤在水平吸湿条件下的盐分运动试验结果做了模拟对比,吻合较好,表明所求参数反映了土壤的物理特性。

     
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