数值计算

The flow field of RH -KTB vacuum degasser in Magang is analyzed with three-dimensional numerical model established by CFX software platform.

利用CFX数值计算软件建立的数值耦合模型对马钢RH-KTB的流场进行了分析，得出了包括钢包、真空室、上升管、下降管的RH全系统的流场状态及其在精炼过程中的变化规律。

Then, a series of successful numerical simulations on the finite length inclined positively buoyant jets in uniform cross flows environment are developed. Based on the results from numerical simulations, some qualitative pictures of the complex three -dimensional mean flows are given. In terms of these pictures, the flowing behavior of the buoyant jets and the mechanism of end-vortexes generation are made a study. The change rules of end-vortexes and temperature and dilution on trajectory of jets, horse-hoof shape of buoyant jets on horizontal, the phenomenon of the jets touch wall, and the effects of diffuser length^ densimetric Foroude number % velocity ratio on buoyant jets are also given.

之后对均匀横流环境中的有限长线源型倾斜浮力射流进行了大量的数值计算，根据数值模拟的结果，绘出了一些复杂的三维图，据此探讨了其流动特性及端涡的产生机理，成功模拟了端涡现象及其发展过程，对轨迹线上沿程温度及稀释度的变化规律，倾斜浮力射流的马蹄形结构，浮力射流的贴壁现象，扩散器长度、喷口弗汝德数、流速比等对浮力射流的影响等问题均给出了有价值的结论。

Numerical simulation of dropwise condensation heat transfer of steam on copper, stainless steel, zinc, carbon steel surfaces were performed using the model of dropwise condensation heat transfer.

同时编制了珠状凝结换热的数值计算程序，并对不同压力下铜表面以水为介质的珠状凝结换热进行了数值模拟。

Based on parabolized stability equations , the stability of nonparallel boundary layer is calculated and analyzed by using recursion numerical method.

该文从抛物化稳定性方程出发，采用从上游往下游递推的数值方法，对非平行边界层稳定性问题进行了数值计算和分析。

Model of two-phase flow on the precess of launch of gun for balance is established.

本文针对以固体弹丸为平衡体的平衡炮发射技术进行理论研究，对平衡炮发射过程建立相应的经典内弹道模型与两相流内弹道的物理模型与数学模型，通过数值模拟的方法，对平衡炮发射过程进行了一些研究，主要研究内容如下：(1)建立经典内弹道模型，通过数值计算，分析平衡炮发射过程中的膛内压力分布特征及平衡发射特征。

The aspect of discuss in this paper such as anisotropic dipole antenna radication field numeral calculation and wave parameter calculation has little documentation systematic introduce at the present.

在研究过程中，涉及到复宗量贝塞尔函数的数值计算，由于它对本文的结果影响较大，且各种数学手册无虚宗量贝塞尔函数值可查，所以对其进行了较为详细的研究。

The paper provides realizing means of sonification on CAD,concludes that CAD data type is suitable for sonification,and analyzes corresponding design of data mapping calculation.

1概述CAD的图形界面给工程师提供一个洞察产品结构和性能的有效途径，使得虚拟产品的性能得以体现，工程师不仅看到产品的外形，还要了解产品的物理性能、设计和制造工艺合理性，虚拟产品的性能需要有仿真数值计算来支撑，而数值模拟产生了大量复杂的数据，为了显示这些数据，经常需要

In the paper the time marching method is used to solve the control equations and a computational analysis of the flow field in a unshrouded impeller is presented.

中文摘要：本文利用数值计算方法对一带分流叶片的离心压气机工作轮内部三维粘性流场进行了数值模拟。

At the same time, the technonogy of lean burn, cooling turbocharger, low swirl combustion system, separated united ignition control system ,open loop injection control system and oxide catalyst etc have been used.

本文对缸内燃烧进行了一维的数值模拟分析，研究压缩比、点火提前角和进气门正时的影响；对CNG发动机的工作过程进行三维数值计算，对缸内流动等内容进行系统研究；预测可靠性的薄弱环节，提出改进措施。

The porous media model of software FLUENT was introduced to simulate the 2D flow through permeable tetrahedrons,and an experiment was conducted to verify the simulation;With the simulation,the influence of parameters such as Re、relative width b/B and relative length l/B on the protected length downstream of permeable tetrahedrons was studied.

本文首次尝试利用Fluent软件的介质模型对经过四面体透水框架群的水流进行了平面二维数值模拟，通过模型验证，多孔介质模型能较好地用于四面体透水框架群模拟；另外，通过数值计算，研究了Re、相对宽度b/B、相对长度l/B对四面体透水框架群下游保护长度的影响。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。