本文运用边界拟合坐标变换方法求解过堰溢流问题。
In this paper the flow over a spillway is solved by using transformation of boundary fitted coordinate systems.
此外我们对边界拟合坐标系的生成作了改进，使方法变得更加灵活了。
Additionally, we improved the generating of boundary fitted coordinate systems for methods, so that the methods are more flexible.
详细论述了边界拟合、边界跳跃、边界分离、边界融合、边界封闭的处理过程。
A series of disposal processes of edges include approaching of edges, leaping of edges, uniting of edges, splitting of edges, and closing of edges are discussed.
该方法采用边界拟合和“路径匹配”技术，使位移量的检测精度达到了亚微米级。
Sub-micron accuracy of displacement detection is obtained by adopting edge fitting technology and path matching technology.
在非正交边界拟合曲线坐标系下 ，建立非交错网格变量布置的水流计算模式 。
The governing equations are discretizated with non-staggered grid by means of finite volume method.
本文给出了一种求解闸坝地基恒定与非恒定有压渗流的边界拟合坐标有限分析方法。
A boundary fitted coordinate Finite Analytical Method (FAM) is described for the numerical solution of steady and unsteady seepage flow with pressure in foundation of sluice and DAMS.
采用了一种通用的道路模型，然后基于链码以及该道路模型，设计了一种有效的道路边界拟合方法。
One general road model is adopted, and based on the chain code and this road model, one fitting algorithm of road boundary is designed.
从椭圆坐标变换和边界拟合出发，推导了椭圆几何参数的计算方法，并给出了计算机模拟检测结果。
The computing methods of ellipse geometric parameters is derived by using coordinate transformation and edge fitting, and the computer simulation result is given.
对于道路边界表示问题，建立了一种道路模型，并提出了一种基于最优分段线段的道路边界拟合算法。
One road model is built for road boundary, and a optimal fitting with multiple line segment is proposed.
利用三维边界拟合坐标变换技术，可将具有任意曲面边界的三维物理区域变成长方体计算区域，在该区域中形成单位立方体差分网格。
By means of BFCT, a three-dimensional physical space with arbitrary configuration can be transformed into standard cube, forming the unit cubic grid.
其次，在曲面片内部，曲面拟合点和边界方向导数可以从参考曲线中通过构建虚拟等参线的方法得到。
Next, in the interior of the patches, surface fitting points and cross boundary derivatives are estimated from the reference curves by constructing virtual iso-parametric curves.
如此，既能与边界单元几何形状基本拟合，又能高精度地模拟裂纹尖端附近位移和应力变化规律，并提高计算效率。
So such, both shape consistent with boundary element geometrical shape, and simulate crack tip close-by variety law of stress and strain with higher precision, and enhancing calculative efficiency.
对于不规则物体，系统采用阶梯近似方法对其边界进行拟合并可自动生成圆柱类物体。
The system adopts the staircase approach the boundary of irregular object and it can generate circular object automatically.
提出了一种基于曲线拟合法求取图像中不规则边界圆的参数求取方法。
A new algorithms for parameters of an image irregular boundary circle parameters is presented, which is based on Curve-Approximate Method.
然后，着重讨论了用于轴承边界的圆度、尺寸和圆心度检测的两种计算方法—点—圆变换法和圆形曲线拟合法。
Then, two methods are discussed which are point-circle transformation and circular curve fitting for inspecting the bearing's circularity, dimension and concentricity.
HHT刚提出不久，其理论本身还存在不少问题，如包络线和均值曲线的拟合、边界效应和模态混叠等问题。
HHT has not been put forward for long time, so it contains some theoretical problems, such as envelop and mean curve fit, boundary effect, modes mix and so on.
以试井资料为基础，结合试油、试采及其它地质资料通过压力诊断、曲线拟合、边界分析等，得到准确的油藏参数。
Based on testing data, combining well test, recovery and other geologic data, by pressure diagnose, curve analog and boundary analysis, an accurate reservoir parameter can be gained.
利用后滤波的原理，对多邻接点时新边界点的选择和轮廓端点的对称合成等问题进行了分析，采用构造拟合曲线查找表进行曲线拟合的方法实现反走样。
By use of the theory of after filter, the problems of selecting new boundary point when several points border upon each other and symmetrical combination for outline points are analyzed.
应用实例表明，算法的适用于任何测量点云，提取的边界数据精度高，可直接用于曲线拟合。
Empirical results show that the proposed algorithm is suitable to any measured data and the extracting boundary data is precise which can be used to fit curve directly.
自动边界数据采集系统是用梯度边缘追踪法自动获取左室内膜边界的曲线点，使用三次曲线插值法及最小二乘法拟合整条左室边界曲线。
The system of automatic boundary data acquisition can obtain the curve data of the endocardium boundary of left ventricle with the tracing algorithm of the gradient image edge.
该算法能使用较少内存空间拟合平面散乱点集边界。
This algorithm can cost few memory space for fitting the boundary.
本文讨论了在波动方程偏移问题中构造吸收边界条件方程的原则，并提出了求解具有吸收边界条件的偏移问题的一种新方法——矩阵拟合分解方法。
In this paper a fitting decomposition method is proposed and the principles for construe - ting equations which characterize the absorbing boundary conditions is discussed for wave equation migration.
在经典算子的基础上，结合边界跟踪和曲线拟合的理论，得到了能较好处理一般质量图像边界的算法。
On the basis of classical edge operator theory and combined with edge tracking and curve fitting theory we developed an algorithm which can deal with the edge of ordinary quality image better.
初始曲面拟合是利用UG的二次开发功能，将截面线与边界曲线拟合成一张初始曲面。
Original surface is formed from boundary curve and section curve using the redevelopement interface of UG.
文中利用了两种对非规则边界参数区域进行拟合的方法，对同向双螺杆挤出机四面体间隙进行了拟合，并建立了一种曲面拟合误差测量的新方法；
Two methods were applied to fit surfaces of the tetrahedral gap of an intermeshing co-rotating twin-screw extruder. The surfaces are irregular border's parameter domain.
文中利用了两种对非规则边界参数区域进行拟合的方法，对同向双螺杆挤出机四面体间隙进行了拟合，并建立了一种曲面拟合误差测量的新方法；
Two methods were applied to fit surfaces of the tetrahedral gap of an intermeshing co-rotating twin-screw extruder. The surfaces are irregular border's parameter domain.
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