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Nitrogen oxides emission is numerically simulated with the joint-scalar PDF method and the Eulerian unsteady laminar flamelet model in order to investigate influence of combustion models on the formation of nitrogen oxides. Comparisons between numerica...

计算结果和实验数据的比较表明，采用概率密度函数方法计算化学反应可以得到更好的结果但计算量较大，而用火焰面模型求解计算量较小，在接近完全燃烧的情形下，其计算结果比较合理。

The application of flamelet model based on level set in premixed turbulence combustion;2. A methane turbulent non-premixed flame has been simulated numerically by the combination of laminar flamelet model and presumed probability density function.

将小火焰模型和假定的PDF方法相结合，模拟甲烷湍流射流扩散火焰，稳态火焰面结构由层流小火焰数据库得到，采用详细化学反应机理描述甲烷的氧化和NO以及碳烟的生成，数值模拟结果和实验数据吻合较好，说明小火焰模型可以较准确地计算出扩散湍流火焰中的燃烧过程。

This thesis numerically modeled the current hi the outfall reach of a new floodway, and provide the scientific basis for the layout and design.

本文主要针对淮河入海水道河口段，利用数学模型研究其水流状况，为工程规划和设计提供科学依据。

With the development of computer technology and fluid dynamics,it is possible to simulate core-shooting process numerically.

随着计算机技术以及流体力学理论的发展，使得对射砂过程进行数值模拟成为可能。

Three-dimension turbulent flow in forebay of pumping station is numerically simulated with finite volume method and hybrid grid technique.

文摘：应用水平方向上是正交贴体坐标系、垂直方向上是笛卡尔坐标系的混合数值网络系统和三维紊流数值模拟的方法，模拟了泵站前池水流流态。

Firstly, adopting the 3—D standard k-ε two equation model, the turbulent flow field in pumping station forebay is numerically solved by finite volume method and the technology of hybrid grid.

本文先采用三维标准k-ε紊流模型，运用控制容积法及混合网格生成技术，对泵站前池的水流运动作了模拟，得出泥沙运动计算所需的物理量。

The CAD model was numerically simulated by the software Dynaform, the results show that the formability is good.

采用板料成形有限元软件Dynaform对该模型进行了模拟仿真，结果表明修改后的形状成形性良好。

Using Landauer-Buttiker formulism the analytical expressions for the electronic transmission probability as a function of incident electron energy and geometry parameters are obtained, with which the conditions for interference maximum and minimum of electron wave are indicated analytically and verified numerically.

用Landauer-Büttiker公式解析地计算出了两种情况下系统电子透射率作为入射电子能量和系统几何参数的函数表达式，从而分析得出了由于量子干涉产生透射极大与极小值时入射能量与几何参数所满足的条件关系并得到了数值验证。

We simulate numerically the far-field intensity distribution of 6 circular arranged coherent fiber lasers and estimate its power convergence based on Fraunhofer diffraction theory.

基于Fraunhofer标量衍射理论，计算了按圆周形排列的6束光纤激光相干合束的远场光强分布，并对其能量集中程度进行了讨论。

The far-field intensity distribution of 6 circular arranged coherent fiber lasers is simulated numerically and its power convergence is estimated based on Fraunhofer diffraction theory.

基于Fraunhofer标量衍射理论，计算了按圆周形排列的6束光纤激光相干合束的远场光强分布，并对其能量集中程度进行了讨论。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了