渗流

In performing the numerical analysis of unsteady seepage problem, it is necessary to calculate the integral on free surface boundary.

在三维非恒定渗流有限元计算中，不可避免地需计算自由面上的边界积分项。

In this thesis, the problems, involving in the design and practice of braced structure on deep foundation excavat...

本文针对目前深基坑设计理论和实践中有关渗流方面存在的问题进行了较系统的研究。

Based on the experiment of sand and clay,the computing method of buoyance without seepage is analyzed.

通过对砂土和粘土的试验，研究了无渗流条件下地下结构浮力的计算方法。

The rule about water flow in unsaturated soil and the soil-water characteristic curve are described in this papsr, and it respectively regards moisture content and capillarity head as basic variable to deduce unsaturated seepage control equation.

本文阐述了非饱和土中的流动规律和土—水特征曲线的特征及其应用，分别以含水量和毛细水头为未知量推导了非饱和渗流的控制方程。

Second,the characteristics of moisture transfer with the capillary effect was studied.

再次，研究了降雨渗流作用下的水分迁移特性。

Equations of SBFEM for a seepage problem are derived with a transformation from Cartesian coordinates to scaled coordinates.

通过比例坐标与直角坐标之间的转换，推导渗流问题的比例边界有限元方程。

So centrifuge model test technique can be used to forecast consolidation and seepage condition of prototype.

因此，利用离心模型技术可以预测原型的固结情况和渗流情况。

Amukhin et al.,and convert it into an effective1D chain with particular distribution of equivalent coupling bonds.Then we use the single-electron Schrodinger equation to calculatewave functions of electrons in the chain by transfer matrix method,without using the assumption of Samukhin et al.On variable hoppingmechanism and critical percolation condition.From this calculationwe obtain the dc conductance directly from Landauer-Buttikarformula.

mukhin提出的多层次等级分形结构模型，将其简化为耦合键强度t具有特殊分布的等效一维链，舍弃前人假设的变程跳跃机制与临界渗流条件，从单电子薛定谔方程出发，用转移矩阵方法计算一维链的透射系数，再利用Landauer-Buttickar公式直接求出直流电导。

This equation includes the characteristic term of nonlinear flow, it is impossible to get the accurate solution.

方程含有非线性渗流的特征项，无法求得解析解，直接采用有限差分方法处理非线性项，计算量大，对算法的精度要求也很高。

On the basis of seepage analysis, the most dangerous slippery arc slices and safety coefficients of Yanji earth rock-fill dam with clunch core is defined by running the Fortran procedure which use the Sweden circular sliding method. The results which satisfie the request of the standard indicate earth rock-fill dam stable.

在渗流分析的基础上，采用瑞典圆弧滑动方法，利用已有的Fortran程序，确定烟集粘土心墙土石坝的最危险滑弧条分及安全系数，计算得出的结果满足规范的要求，表明坝体是稳定的。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。