1) numerical dispersion
数值频散
1.
Analysis of numerical dispersion in wave-field simulation;
波场模拟中的数值频散分析与校正策略
2.
A numerical dispersion relationship is proposed, which is mainly influenced by both the finite difference accuracy and the grid size.
采用适于三维各向同性介质正演的有限差分格式 ,对声波方程进行了差分离散 ,导出了差分格式的数值频散关系。
3.
Conventional finite-difference methods for solving elastic-wave equation suffer from numerical dispersion when too few samples per wavelength are used.
通量校正传输(FCT)算法可有效地压制在粗网格情况下产生的数值频散。
2) numeric dispersion
数值频散
1.
Using combined mass matrix to suppress numeric dispersion;
利用组合质量矩阵压制数值频散
2.
Wave-equation finite-difference algorithm can more preciously simulate seismic wavefield for any non-uniform medium,but have the issue of numeric dispersion.
波动方程有限差分方法能够较精确地模拟任意非均匀介质中的地震波场,但它本身存在着数值频散问题。
3) dispersion function
频散函数
1.
This paper first introduces the modified Anas Abo Zena's method for computation of surface waves dispersion functions, which is a stable algorithm at very high frequency and can be used to compute the dispersion curves for site investigation and non-intrusive diagnosis.
作者在本文中首先介绍了改进的AnasAbo Zena传递矩阵法[1 ] 面波频散函数的计算问题。
4) frequency spread data
频散数据
1.
Transient surface wave was firstly used to evaluate the conditions of old highway which the layer was hard in the top while soft in the lower,the sensors was improved to adapt to the layer,the frequency spread data of base and high order modal was comprehensively used to forward and inverse the old highway surface wave velocity(SWV) along depth.
通过改进传感器型式,综合利用基阶模态和高阶模态频散数据正反演老路随深度方向面波速率,对比养护资料及钻探试验,建立了面波波速与老路压实度、标准贯入击数统计关系。
5) numerical dispersion
数值弥散
1.
The authors use an operator split upwind equalization scheme for overcoming the numerical dispersion and oscillation problems appeared in water pollution simulations problems where the convection is dominated.
各种常见的数值解法在以对流为主溶质运移问题的求解中都会遇到困难,如用有限单元法或有限差分法时,会产生数值弥散与过量这两类误差。
2.
Then this paper studied the effect of diffusion coefficient on concentration distribution and the conditions of substitution with numerical dispersion for physical diffusion.
本文通过求一对流-扩散方程的半解析解,分析了扩散系数大小及影响扩散系数的参数对计算出的浓度分布的影响;通过将该半解析解与忽略扩散的数值解进行对比分析,讨论了数值弥散代替物理扩散的条件。
3.
Influences of reservoir heterogeneity and dip angle on unstable-state displacement of gas flooding in an oil field have been studied through numerical simulation,adopting dimensionless quantity batch and high-density grid eliminating numerical dispersion techniques,which could identify multiple phase flow patterns.
应用标定多相流态的无因次量组及高密度网格消除数值弥散技术,采用数值模拟方法研究了针对矿场规模的注气驱替中非均质程度、倾角数对非稳态驱替动态的影响。
6) numerical dispersion
数值色散
1.
An efficacious method on the numerical dispersion attenuation of ADI-FDTD;
有效修正ADI-FDTD算法中数值色散的一种方法
2.
Simulation research on numerical dispersion for modeling of wave guide devices by FDTD;
用FDTD法建模波导器件时数值色散的仿真研究
3.
Because the numerical dispersion of the ADI-FDTD method will increase with the increase of the temporal increment,the Envelope ADI-FDTD method in UPML medium is presented in this paper.
由于交替方向隐式时域有限差分法(Alternating-Direction Implicit Finite-Difference Time Domain,ADI-FDTD)的数值色散会随着时间步长的增加而增加,文中讨论了单轴各向异性完全匹配层(uniaxial perfectly matched layer,UPML)媒质中包络交替方向隐式时域有限差分法(Envelope ADI-FDTD),推导了二维Envelope ADI-FDTD UPML的迭代公式,并提出一种新的离散方法。
补充资料：广陵散(散ｓǎｎ)
琴曲。三国魏嵇康以善弹此曲著称。相传嵇康因不满司马氏专权而被害，临刑前曾索琴弹奏此曲。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条