The severe numerical instability in complex frequency modal mass identification from frequency response function makes it difficult to identify physical parameters.
利用频响函数识别复频率模态质量存在着严重的数值计算不稳定性，给物理参数的识别造成困难。
The numerical simulation also shows that fundamental soliton pulses with high repetition rate can be generated in this kind of fiber by modulation instability.
数值模拟显示，利用色散缓变光纤中的调制不稳定性可以产生高重复率的基本孤子脉冲串。
In a numerical model especially set up in the work that includes disturbance and basic flows, the interactions between disturbances and symmetric instability are discussed comprehensively.
通过建立包含扰动和基流方程组的数值模式，全面讨论了扰动与对称不稳定纬向基流的相互作用。
The linearized problem is analyzed and stability boundaries which characterize instability of a plate are obtained by means of numerical and analysis methods.
采用分析与计算相结合的方法着重讨论了热屈曲的线性化问题，获得了反映环板失稳特征的稳定边界。
The streamline model overcomes the numerical dispersion and instability, is faster than the conventional numerical simulation and allows for more nodes.
流线模型不存在数值弥散和不稳定性，比传统的数值模拟速度快，允许节点多。
Nonetheless, the energy function of the GACM and its solving algorithm has many restrictions, such as instability of numerical computation, probability of divergence of control points.
但是短程线主动轮廓模型的能量函数及其解法存在很多局限性，如数值计算的不稳定性和控制点存在不收敛的可能性等等。
Study on the mechanism of instability and failure of this kind of structure is an unsolved topic and a research full of challenge in the field of numerical analysis.
对于这类系统的稳定性研究以及其失稳破坏机理的探究，一直是工程界悬而未决的课题，也是结构—波浪—海床相互作用数值仿真分析中极具挑战性的研究。
The steady state vector spatial solitons in photorefractive crystals and the modulation instability in biased photorefractive-photovoltaic crystals are studied by both analytic and numerical methods.
用解析方法和数值方法在理论上研究了光折变晶体中的稳态矢量空间光孤子及有偏压光伏光折变晶体中光束的调制不稳定性；
Numerical results showed that the proposed boundary could simulate the influence of far field and did not have the problem of low-frequency instability.
数值分析结果显示，该边界可较好地模拟远场介质的作用以及土体的辐射阻尼，具有良好的低频稳定性。
In this paper, the concept, phenomena and handling methods of nonlinear computational instability in the problems of numerical weather prediction are discussed.
本文综合介绍天气预报问题中的非线性计算不稳定的含义、计算现象和处理办法。
Based on the homogeneous model, the numerical computation for the oscillation period and amplitude of pressure drop type instability was conducted.
根据两相流的均相模型，对压力降型脉动的周期和振幅进行了数值计算。
Numerical simulation of combustion instability.
燃烧不稳定数字化模拟。
This paper provides some simple and efficient methods for inversely solving the parameter of the point and the inner weight, which avoid the instability in numerical calculation.
本文提供了一些简单有效的方法，反求曲线上该点的参数和内权因子，避免了数值计算的不稳定性。
The set of equations for RT instability of 3D laser ablation is presented and the numerical method is introduced briefly.
给出了用三维激光烧蚀不稳定性程序求解的物理方程组，简要介绍了所用的数值方法。
Finally, the numerical results are given for the dispersion relation of cyclotron waves, the criterion for this instability and the optimum value for generating it has been obtained.
最后对回旋波色散关系进行了数值计算，得到了不稳定性判据和引起不稳定性的最佳值。
Theoretical approach of two-phase flow instability can be divided into two categories: numerical analysis and approximation analysis.
两相流不稳定性理论分析方法可以分为两大类：一类是数值解析法，另一类是近似分析法。
The instability criterion of iteration non-convergence of finite element numerical solution is suitable for stability analysis of embankment under surcharge and multi-stage embankment.
有限元数值计算迭代不收敛判据适用于车辆荷载下的路堤及多级路堤的稳定性分析。
Turbulence two phase flow and combustion process in a liquid rocket engine combustor are analyzed with numerical method, and combustion instability is also studied.
采用数值模拟的方法对液体火箭发动机燃烧室内湍流两相流动与燃烧过程进行了分析，同时研究了燃烧室内高频不稳定燃烧现象。
A numerical model was employed to analyze the tangential combustion instability in liquid rocket engine.
建立了液体火箭发动机切向不稳定燃烧数值分析模型并进行了初步分析。
We have performed numerical simulations of nonlinear evolution of plasma interchange instability in equatorial spread F (ESF) under different conditions.
利用数值模拟，研究了不同条件下赤道电离层等离子体交换 不稳定性的演变和扩展F不均匀体的形态。
We have performed numerical simulations of nonlinear evolution of plasma interchange instability in equatorial spread F (ESF) under different conditions.
利用数值模拟，研究了不同条件下赤道电离层等离子体交换 不稳定性的演变和扩展F不均匀体的形态。
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