由于冲击式水轮机三维自由射流是两相流，进行瞬态计算的时间步长必须非常小，这就需要大量的计算资源。
The time step is very small for the transient analysis of nozzle jet flow, which occupied numerous computational resources.
还包括数学模型方程的计算机辅助管理系统的瞬态特性。
The mathematical model also includes equations for computer-assisted management systems transient characteristics.
本文针对汽轮机转子的脆化现象，运用有限元方法对引进型300MW汽轮机冷态启动过程的高中压转子瞬态温度场进行了分析计算。
To the embrittlement phenomenon of steam turbine rotor, this thesis calculated 300mw steam turbine rotor's transient temperature field of cold start-up using FEA method.
通过对1150初轧机主传动系统上轴系机电耦合系统瞬态响应的仿真计算，证实了计算机程序的正确性。
By the simulation for the transient responses of the upper shafting in the main drive system of 1150 rolling mill, the computer programme is proved to be effective.
瞬态响应分析是有限元动力分析的重要内容之一，而串行计算机上运行的有限元软件在解题规模和速度上都受到很大限制。
Transient response analysis is an important part of finite elements dynamic analysis. Problem scales and velocities of serial softwares are limited on serial computers.
根据数学模型和相应的数值计算方法，研制了水试压后输气管道的瞬态模拟分析软件Pigging。
Based on the mathematical model mentioned above, a software pigging is developed, which aims at pigging steady calculation after water pressure test.
采用整体传递系数法计算转子系统的动力特性，进而求解双转子系统的瞬态响应。
The dynamic characteristics were calculated by the WTCM, and then the transient responses of dual-rotor system were solved.
采用集总参数模型，推导了脉冲堆燃料元件瞬态温度场的计算公式；
The formula for calculating transient temperature field in pulse reactor fuel element is derived with lumped parameter models.
基于傅里叶变换的瞬态激励法是一种模拟半导体器件交流特性的计算技术。
Transient excitation of a device followed by fourier decomposition is a calculating technique for finding the AC behavior of a semiconductor device.
并用有限差分法对瞬态温度场与热应力进行了校核计算，其结果与实测完全吻合。
Verification calculation of transient temperature and stress distributions were performed with the finite difference method, and the results coincided with the measurements.
对涌流瞬态过程进行了分析，研究计算办法并编制了计算软件，可以对变压器空载合闸时的励磁涌流进行计算模拟。
We study the calculating method and program the calculating software to simulate the exciter flow current on the no-load switching-in of transformer.
本文以层状的CTRW模型为基础，对非晶半导体超晶格中的瞬态光电导作了理论计算。
On basis of a layered CTRW model the transient photoconductivity in amorphous semi-conductor superlattices is calculated.
通过计算比较了不同长宽比的水平裂缝对瞬态压力的影响，比较不同裂缝传导率对瞬态压力的影响。
The influences given by horizontal fractures with different length and width and the different rate of fracture conductivity on the transient pressure are compared through calculation.
根据瞬态振动理论和重复冲击下响应迭加效应，计算单自由度包装件的响应加速度及其最大值。
The response acceleration and its maximum of a package with SDOF have been calculated according to the transient oscillation theory and response reiterative effects under impetus of repetitive shocks.
提出了计算转子系统瞬态响应的精细迭代积分方法。
An iterative precise integration method is proposed to calculate the transient response of rotor-bearing systems.
提出了采用瞬态动力分析计算松拉金成组叶片动应力的方法。
An algorithm to calculate the dynamical stress of loose lashing wire grouped blade with transient dynamical analysis method is proposed.
首先要准确细致地分析电机内部瞬态磁场的分布，然后才可以方便地计算电机的瞬态特性。
The distribution of the interior transient magnetic fieldfirstly needs to be calculated, then the transient characteristics of the machine will be analysed accurately.
采用桩土分析法，计算分析在一个荷载周期内，弹性路基内各研究节点的位移、竖向应力、桩土应力比的瞬态响应。
Then, transient response of vertical displacement, vertical stress and pile-soil stress ratio of some nodes in the elastic subgrade are computed in one single load cycle.
根据轨迹函数、规划参数可以计算出各坐标轴的瞬态运动参数。
Its geometrical parameter and planning parameter should be followed in calculating the transient motion parameters of all coordinate axes.
本文对于承受爆炸、冲击等瞬态载荷作用下的结构动应力计算也有参考价值。
This method has reference values in analyzing the dynamic stress in some structure under transient loads such as blast and impact.
以非线性瞬态动力学理论为基础，计算和分析了某型火箭发射过程中管内姿态情况。
The posture of a rocket in launch tube was calculated and analyzed Basel on the theory of non-linear transient dynamics.
利用ANSYS有限元分析软件，采用三维非线性有限元方法对柴油机曲轴中频淬火瞬态温度场进行了模拟计算；
The three dimensional non linear finite element analysis of the transient temperature field during intermediate frequency quenching of diesel crankshaft was simulated by using of ANSYS.
本文对于承受爆炸、冲击等瞬态载荷作用下的结构动应力计算也有参考价值。
This method has reference values in analyzing the dynamic stress in some structures under transient loads such as blast and impact.
基于时域有限差分算法，提出了一种新的电力电缆电磁瞬态分析的计算模型。
Based on the finite difference time-domain (FDTD) method, a novel model is presented for transient analysis of power cable system.
介绍了瞬时频率的概念和瞬态谱的小波包计算方法，并结合时间域模拟信号给出了其时频分布。
The conception of transient frequency and calculation method of wavelet packet are introduced, and time frequency distribution about simulation and actual seismic signals is given.
采用流函数-涡量法对粘性不可压缩流体的二维瞬态流动进行模拟计算。
The stream function-vorticity method has been used to simulate two-dimensional transient state of incompressible viscous flow.
利用经典形核理论与瞬态形核理论计算讨论偏晶合金的两相竞争形核规律。
Phase competitive nucleation in the alloy was discussed by classical nucleation theory and transient nucleation theory.
利用卧式后坐装置、磁电式速度传感器、测量放大器、瞬态波形记录仪及计算机组建了一套水下发射装置后坐能量测试系统。
Recoil energy measuring system of a underwater launcher is formed by means of horizontal recoil device, electromagnetic velocity sensor, measuring amplifier, transient waveform recorder and computer.
在瞬态温度场正问题求解中采用了精细积分方法以提高计算精度。
The precise integral method is used to solve the instantaneous heat transfer equations to improve solution precision.
在瞬态温度场正问题求解中采用了精细积分方法以提高计算精度。
The precise integral method is used to solve the instantaneous heat transfer equations to improve solution precision.
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