查询词典 paraboloidal coordinates

A two-dimensional Reynolds-averaged Navier-Stokes solver is applied to analyze the aerodynamic behavior of the ShockBoundary-Layer interaction of rocket with a booster. The K-ε turbulence model and a finite volume method in a unstructured body-fitted curvilinear coordinates have been used.

本文利用二维雷诺平均的Navier-Stokes方程，采用K-ε湍流模式，运用有限体积法，对大型运载火箭的助推器与芯级的激波边界层干扰进行了二维数值模拟。

Based on SIMPLER algorithm in the curvilinear body-fitted coordinates, the calculations were performed for Pr=0.7, Re=10~1000 on non-orthogonal non-staggered grids which are generated by elliptic equation systems.

采用曲线坐标系下压力与速度耦合的SIMPLER算法，数值研究了周期性渐扩渐缩波纹通道内脉动流动与换热情况，流动Re数的范围为10~1000，Pr数为0.7。

Keywords River networks;Water quality model;Finite volume method;Curvilinear coordinates;SIMPLEC algorithm;Overbank flow

Article From 大连理工大学；港口、海岸及近海工程博士论文 2007年度河网；水质模型；有限体积法；曲线坐标； SIMPLEC算法；漫滩流动

A three- dimensional turbulence model in non-orthogonal curvilinear coordinates is proposed to investigate the impacts of vegetation on channel morphology. The model includes vegetation-induced drag force and vegetation density in the control equations to describe the effects of vegetation on flow structure, and solves sediment continuity equation to compute channel geometry.

本文建立曲线坐标系下的三维湍流模型研究水生植物对河道形态的影响，在水流控制方程中加入植物阻力项和植物密度项来描述水生植物对水动力特性的贡献，通过泥沙质量守恒方程求解河道变形，在适体网格中求解模型的控制方程。

For some particular casesof boundary-value problems such as the problems with curvilinear boundariesor a sharp re-entrant corner,the B-FEM in curvilinear coordinates will givequite fine results.

对一些特殊问题，如曲线边界问题、尖角奇异性问题等，在曲线坐标系中建立的B样条有限元法，具有良好的计算效果。

We construct a family of iterative mappings, which yield cyclic windows of variant size in the dynamical plane by incorporating cosine functions and non-linear angle variables with parameters. Chaotic attractors and filled-in Julia sets in the different cyclic windows are created by establishing the coordinates of any cyclic windows and the maximal window, then clarifying the relationship of corresponding points between these cyclic windows. The respective images in different windows are continuous but with individual structures.

该算法采用余弦函数及含参的非线性角度变量构造一族使动力平面上各周期窗口的尺度变化的迭代映射；通过计算任意周期窗口和最大周期窗口得出窗口间相应点之间的非线性对应关系，并构造出各周期窗口中的混沌吸引子和充满Julia集，其图案是连续的且结构不同的；选用不同的周期窗口作为基本计算区域，使之与正方形像素矩阵对应，并构造出基本图元，实现了用一个映射构造出多个平面排列图案的算法。

If the air drag and composite motion are considered in the analysis of the balloon yarn in ring spinning,the calculation with the circular cyclindrical coordinates is simpler and more precise.

在环锭纺气圈的分析中，用柱面坐标系计算能简明、清晰地反映空气阻尼力、复合运动诸因素的综合影响。本文介绍了根据照相测量的气圈形态参数计算纱线张力的新方法

Firstly the principles and implementary steps of the MPSTD algorithm based on polar and cylindrical coordinates are put forward.

系统、全面地分析总结了MPSTD算法的计算流程和各项关键技术，对各项关键技术的优缺点进行了分析和比较。2。

Point clouds from human body surface are first converted into cylindrical polar coordinates and the panoramic range image of human body is created.

首先把人体表面的点云数据转换为圆柱极坐标形式，获得人体扫描表面的全景深度图像表示，根据全景深度图像中的层次信息自动检测人体表面的拓扑特征，并根据拓扑特征把人体分割成5个功能结构。

According to the structure and motion characteristics of the spherical offset mono-cone bit, compound cylindrical coordinates were set up, and basic geometric equations and the conditions of teeth to penetrate rock for the bit were presented.

针对偏心单牙轮钻头的结构和运动特点，利用复合圆柱坐标系统的基本原理，建立了偏心单牙轮钻头几何学基本方程和牙齿对岩石的吃入条件。

Eight cases of simple chordee of penis were adopted urethral extending.9 cases of severe simple chordee of penis were adopted primary urethroplasty.

8例单纯性阴茎下弯患者采取尿道延伸术，9例重度阴茎下弯患者采取切断尿道矫直阴茎一期尿道成形术。

She is a daintily dressed young lady.

她是个装饰娇艳的少女。