查询词典 Delaunay

In this paper, the quality of unstructured grids generated by Delaunay Triangulation Method and Bubble Packing method is compared by the classical lid-driven square cavity flow solved by SIMPLE algorithm on collocated unstructured grid. The velocity distributions on vertical and horizontal center lines are in good agreement with bench mark, which shows that both of the two grids can be used in CFD.

本文利用经典的方腔顶盖驱动流对Delaunay方法和Bubble Packing方法所生成网格的质量以及基于非结构化同位网格的SIMPLE算法进行了验证，发现两种网格均可用于单相流动的CFD计算，垂直与水平中心线上的速度分布与基准解相比非常吻合并可得到良好的结果。

In the Delaunay method, the dissertation improves the customary Bowyer arithmetic, which advance the quality of triangle and the speed of generation.

并在Delaunay三角化算法中，改进了原有的Bowyer算法，提高了三角形单元的质量，同时也提高了生成的速度。

The Delaunay triangulation is an aggregate of connected but nonoverlapping triangles, and the circumcircle of each triangle contains no other point in its interior.

Delaunay三角网为相互邻接且互不重叠的三角形集合，其中每一个三角形的外接圆内不包含其他的点。

Based on the two features of the Delaunay triangulation:maximum and minimum feature,empty circumcircle feature,in this article the procedure of building triangulation network needs three steps:creating boundary,building up the interior triangulation network,coping with the hole between the boundary and the interior triangulation network.

基于Delaunay三角网划分的两个特性：最大最小特性与空外接圆特性，论文构网过程分三步：生成边界，构造内三角网，对边界与内三角网之间的空洞进行处理。

One is that we perform Delaunay triangulation instead of using a complete graph in the first step.

第一步骤不作完整图，因为其时间复杂度为O(n2)。本篇论文利用Delaunay triangulation当作一开始的连接图，其时间复杂度为O。

The discrete velocities are connected by Delaunay grids to form referring region, and the error vectors in the discrete data can be distinguished, corrected and interposed by continuity principle of flow.

2针对PIV数据错误矢量进行识别、修正与插值方法进行了研究，通过Delaunay网格将离散的各流速点连接起来，形成参考区域，利用流体的连续性原理实现了离散数据中错误矢量识别、修正与插值。

In this paper, the algorithms of building constrained Delaunay triangulation is discussed, a software system based on it is developed, and some researches are done on the contour map.

本文研究了限制性Delaunay三角网的生成方法，开发了相应的软件包，并在等高线图上进行了一系列试验研究。

A Delaunay triangulation algorithm based on optimal convex hull technology is presented.

提出了一种基于最优凸壳技术的Delaunay三角剖分算法。

This digital terrain model based on the ellipsoidal surface is essentially different from DTM based on projected plane because the Delaunay triangulation net is built based on geodesic coordinate system on regional ellipsoidal surface .

在椭球面上构建Delaunay三角网，与在平面上构网有不完全相同的定义与算法。

The theory and algorithm of 3D graph display and reconstruction is studied, including the synchronous contour matching algorithm, MC method, projection-based method, Delaunay triangulation, shortest diagonal method and maximum volume method. And the method of extraction of the color edge of 3D color data is proposed.

分别以同步轮廓线前进法、MC法、基于投影法、Delaunay三角法、最短对角线法、最大体积法研究三维图形显示、重建的理论和算法，提出三维彩色数据颜色边界提取方法。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。