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Numerical simulation of the steady cavitating turbulent flow in the whole flow passage of a Kaplan turbine has been carried out by using a full cavitation model and a mixture two-phase flow model.
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摘要采用一种完整空化模型和一种混合流体两相流模型，对轴流式水轮机全流道内的定常空化湍流流动进行了数值模拟。 |
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Numerical simulation of two dimensional examples shows the possibility of using this method to reconstruct flow patterns.
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对二维流场的数值模拟例子表明，这种流场重建的方法是可行的。 |
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Numerical simulation results indicate that. (1) Cut-off model and simple damage accumulation model can qualitatively describe some physical essences of spall fracture, but remain apparent discrepancies from the experimental results due to the damage influ
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结果表明：简单最大拉伸应力模型和简单损伤累积模型能定性反映层裂的物理现象，由于忽略损伤对本构的影响，计算结果和实验有偏差，但模型要求参数较少，对于一些精度要求不是很高的工程问题，可以采用；从材料损伤断裂物理本质出发，采用微损伤统计方法得到的NAG模型和封加波损伤度函数模型，能很好地再现实测的自由面速度剖面，数值计算结果与实验吻合很好。 |
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Numerical simulation signal and vibration acceleration signal of a roughing mill main drive speed reduction unit have been decomposed by using empirical mode decomposition algorithm; each component has been carried on spectral analysis.
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摘要运用经验模式分解算法对数值仿真信号及某轧钢厂粗轧机主传动减速机振动加速度信号进行了分解，从而得到若干个基本模式分量，对每个模式分量进行了频谱分析。 |
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Numerical simulations confirm the strategy's validity and feasibility .This strategy provides an effective solution to other nonlinear multivariable control systems as well.
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仿真实验证明，该策略是有效和可行的，并为其他非线性多变数系统的控制提供了有效方法。 |
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Numerical simulations demonstrate that the multi body analytical model can analyze the aeroelastic stability of the tiltrotor aircraft in the helicopter mode.
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数值计算表明：建立的多体动力学模型能够快速分析直升机模式下倾转旋翼机复杂的旋翼／机翼气弹耦合动力学特性。 |
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Numerical solution of differential equations.
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微分方程的数值解。 |
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Numerical solution of second order differential equations.
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二阶微分方程的数值解。 |
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Numerical summaries of the audience that not only describe how many watched or listened, but their reactions including enjoyment interest, attentiveness, and information gained.
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对受众的数字总结.不仅描述了有多少观众/听众,还包括他们对节目的反应(如:高兴,有意思,注意,以及获得信息). |
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Numerical testifications show that an improved genetic algorithm based on optimal perturbation analysis is feasible and efficient.
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基于最佳摄动思想提出一种改进的遗传算法，数值试验表明了该算法的可行性和有效性。 |
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Numerical tests indicate that PTAM is accurate and efficient.
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数值试验表明，本文方法是准确和高效的。 |
