圆柱坐标系

本文首次实现了基于GPU的三维圆柱坐标系非均匀网格FDTD并行算法。

Three-dimensional cylindrical coordinate non-uniform cell FDTD parallel computing on GPU is implemented for the first time .

本文从流体力学的连续性方程和Navier-Stokes方程出发，推导了适用于第二层流区的圆柱坐标系中考虑了惯性力的Reynolds方程。

Taking into account of the inertia effect , a Reynolds equation based on cylindrical coordinate system , is derived from continuity equation and Navier-Stokes equation .

通过数值实验，研究了圆柱坐标系下网格波阻抗的正确性和它在圆柱坐标系下时域有限差分法（FDTD）中的应用。

Numerical experiments were done to investigate the validity of MWI and its application in cylindrical coordinates FDTD algorithm .

文中证明三维场在圆柱坐标系下r&z平面的磁力线即为等（rA（？）

It 's proved that the field line on r-z plane of cylindrical coordinates is the line of equa - ( rA_8 ) .

计算结果证明，当采用非均匀圆柱坐标系下FDTD法计算时，圆柱坐标系下网格波阻抗可以较准确地计算由于网格尺寸不同造成的数值反射误差。

The results showed that MWI in cylindrical coordinates can be used to accurately calculate the numerical reflection error caused by different mesh increments in non uniform FDTD .

指定要标度到左垂直坐标轴或右垂直坐标轴上的系列。三维圆柱坐标系下FDTD法对电磁波传播测井的数值模拟

Specify if you want the series to be scaled to the left or right vertical axis . Numerical Simulation of Eletromagnetic Propagation Logging by FDTD in 3-D Cylindrical Coordinates

对脉冲平面波在圆柱坐标系下进行分解，应用总场/散射场连接边界引入入射波，采用PML吸收边界条件。

The incident pulse plane wave is expanded in cylindrical coordinates and total-field / scattered-field formulation is used to introduce the extended plane wave as the excitation .

流动采用圆柱坐标系中的三维NS方程组，并用kε双方程湍流模型闭合，用同位网格和SIMPLE算法求解，源项进行线性化处理以便于收敛；

D N S equations with k ε equations in the cylindrical coordinate system and SIMPLE method were employed to describe and solve the turbulent flow of the pre burner . The source terms were treated by linearization for more quickly converging .

为了更好的构造钻铤及线圈结构，本文采用三维圆柱坐标系FDTD来研究随钻电磁波测井仪器，并且在r方向上采用非均匀网格来减少内存需求。

According to the mandrel and coil geometries , FDTD in a three-dimensional cylindrical grid is chosen to research the response of electromagnetic logging while drilling tools . The cell size in radial p direction is non-uniform to lower the requirement of memory .

基于新圆柱坐标系下梯度折射率介质内辐射传递方程的有限元法可以方便的求解镜反射及Fresnel壁面圆柱形介质内的辐射传递。

The finite element method based on the radiative transfer equation under the new cylindrical coordinate system can conveniently solve the radiative heat transfer in cylindrical graded index medium with specular and Fresnel boundary . 3 .

对极坐标或圆柱坐标系下的CPML吸收边界条件进行了推导和研究，给出了相应的场值更新关系式。

The CPML absorbing condition in polar and cylindrical coordinates is studied . The corresponding formulations are derived for the fields updating .

从圆柱坐标系下麦克斯韦方程的时域有限差分式和特征解出发，引入了二维和三维圆柱坐标系下网格波阻抗（MWI）。

Based on FDTD difference expressions and eigenfunctions of Maxwell functions in cylindrical coordinates , mesh wave impedances ( MWIs ) in 2D and 3D cylindrical coordinates were introduced .

仿真结果表明，采用极坐标或圆柱坐标系下的CPML吸收边界条件具有很好的计算精度，可以大大降低计算开销。

The numerical results indicate that the CPML absorbing condition in polar and cylindrical coordinates is accurate and efficient , and the spending of calculate is reduced greatly . 4 .

圆柱坐标系速度场解析孔型轧制

A Cylindrical Coordinate Velocity Field To Solve Rolling with Grooved Rolls

圆柱坐标系下生物组织中激光传输的七流模拟

Seven-flux modeling of laser light propagation in biological tissue in cylindrical coordinates

圆柱坐标系下谐波电磁场的无网格迦辽金法数值计算模型

Element-Free Galerkin Method Numerical Model of Harmonic Electromagnetic Field in Cylindrical Coordinates

圆柱坐标系下任意方向辐射强度的源项六流法模拟

Arbitrary Directional Radiative Intensity by Source Six Flux Method in Cylindrical Coordinate

圆柱坐标系下连续旋转爆轰发动机的数值模拟

Numerical simulation of continuous rotating detonation engine in column coordinate

圆柱坐标系下非轴对称三维湍流流动的离散化代数方程

Discretization algebraic equation of nonaxisymmetry three dimension turbulent flow

圆柱坐标系下高阶多项式形式调和算子方程的分离变量解法

A variable method of a type of equation with harmonic operator equation of high steps polynomial at cylindrical

在圆柱坐标系中利用积分变换法，求解热传导和热弹性力学方程组。

The equations of heat conduction and thermoelastic dynamics are solved through integral-transform method in circular cylindrical coordinates .

本文利用几何轴对称性，以圆柱坐标系为参考坐标系，建立了回转体静、动力分析的变分差分算法。

In this paper , a variational difference algorithm is constructed for static and dynamic analysis of orthotropic axisymmetric body .

根据电动力学的基本方程，推导出了空间电子束焊枪主透镜区在圆柱坐标系中的自洽性方程组。

Equations of electron beams in the column coordinate system are deduced according to fundamental equations of electro motion mechanics .

检验了方法对于求解圆柱坐标系下多维半透明梯度折射率介质内辐射传递的性能。

The performance of the methods is examined for solving radiative transfer in multidimensional semitransparent graded index medium under cylindrical coordinate system .

运用圆柱坐标系对单管回流燃烧室流场进行了数值模拟。

By the use of a cylindrical coordinate system a numerical simulation was conducted of a single tube return flow combustor flow field .

将激光传输的七流模型与圆柱坐标系内的二维双曲型导热模型相结合建立了理论模型；

A numerical model was established by combining the seven-flux model of light propagation with the two-dimensional hyperbolic heat conduction model in cylindrical coordinates .

利用圆柱坐标系的连续速度场推导出圆管等壁空拉拔制力的计算式。

A formula of drawing force in empty sinking of tubes with equal wall thickness is derived depending on a continuous velocity field in cylindrical coordinate system .

利用圆柱坐标系中的第二类并矢格林函数求解了漏泄同轴电缆附近的场分布，并进而求解了漏泄同轴电缆的耦合损耗。

The field distribution and the coupling loss of the leaky coaxial cable are studied by using the dyadic Green 's function of second kind in the cylindrical coordinate .

本文推导了圆柱坐标系下有耗介质涂覆平面导体表面波的场函数和本征方程、每波长径向衰减常数α；

The eignvalue equation , the attenuation constant a and the field distribution function of the surface wave ( SW ) in a conductor-backed lossy dielectric layer are derived .

本文给出了圆柱坐标系下准三维行波场矢量位方程的解耦形式，并推导了基于伽辽金法的离散格式。

The decoupled equations of quasi-three dimensional travelling wave magnetic field in cylindrical coordinates are presented in the paper , and the discrete format based on Galerkin method is derived .