查询词典 numerical calculation

Based on the theoretical analysis for 1000 m long drainage skills, the UDEC4.0 numerical simulation software is adopted to perform the calculation, showing that the height of caving zone and fractured zone of gob is 9 m and 30 m, the vertical height from the mining induced O-shaped circle to the roof is 10~25 m, and the horizontal distance to both sides of gob is 10~35 m.

本文在顶板千米钻孔抽采技术原理分析的基础上，采用UDEC4.0数值模拟软件计算得出采空区冒落带和裂隙带高度为9m和30m，采动裂隙&O&形圈的范围为距工作面顶板垂高10~25m，距采空区两侧水平距离为10~35m。

ABSTRACT Appling the numerical model and control theory to the state identification of carbon migration in dissimilar metal weldments , its law and quantitative calculation were researched. Based on analysising of metallurgical and dynamics properties of DMWs, the influences of welding procedure's factors on their high-temperature properties were studied in this dissertation. The following are the main contents.

本文将数值化建模和控制理论引入到异种钢焊接接头碳扩散迁移状态辨识，对碳的扩散迁移的规律及定量计算进行了研究，在对异种接头冶金性能和力学性能进行分析的基础上，对焊接工艺因素对接头性能的影响进行了研究，主要内容如下： 1。

Combustion technology. According to the character of CFB and current research, a steady state model of the flow structure and mixing process in the upper dilute zone of a CFB, where variations in flow parameters with height are neglected,揅ontinuous桪ispersion Model? is presented. The model is based on a two梡hase structure, consisting of an upflowing lean suspension and a downflowing particle clusters. On the basis of this model, a numerical simulation calculation model about flow structure and temperature field is established.

根据循环流化床锅炉特点及国内外的研究开发现状，本文在不考虑沿炉膛高度方向上流动参数变化的情况下，提出了一个描述循环流化床上部稀相区流动结构和混合过程的稳态模型——&连续扩散模型&，即认为床内存在着向上运动的气固悬浮相和低速下降的颗粒絮团相，在此基础上建立了流动结构与温度分布的数值模拟计算模型。

We also make two numerical illustrations to show the flexibility of this model: The first one is the calculation of default probability and the second one is the reproducing of implied volatility curve for credit default swaptions.

我们也提出两个数值的实例来显示本模型的弹性：第一个是违约机率的计算，第二个是信用违约交换选择权的隐含波动度曲线之重制。

Therefore, the calculated results from two numerical computation codes are in good agreement with those from field theory calculation. It has been proved that the applicability of this approach to mode separation research, by contrast, the tested results of mode frequency coming from the Model 2M214 magnetron (double-ring strappings) manufactured by LG Electronic Co.

对于LG 2M214型双环隔模带磁控管，模式分隔度的分析结果与韩国LG公司生产的磁控管实测结果相比较，预测误差仅为0.6%，能够与实际测试结果很好的相符合，预测精度足够高，从而证实了本方法在磁控管谐振系统模式频率分隔特性预测方面的可用性。

In this dissertation, at first, the history and present situation of the research related to overheating is reviewed, and then the research works are carried out in following aspects the calculation of radiative properties of coal combustion, the solution of radiative transfer equation in absorbing-scattering media, the analyses of combined heat transfer processes in flue side, the computation method of steam temperature deviation of superheaters and reheaters and the inversion method of their wall metallic temperature in furnace, the numerical simulation of gas-solid two-phase flow, combustion and heat transfer in furnace, the measurement of outlet steam temperature of superheaters and reheaters, engineering reformation of overheating and optimum design of superheaters and reheaters, etc.

本文在综述了与过热器和再热器超温问题有关的研究历史与现状的基础上，在煤粉燃烧产物辐射特性的计算、含散射问题的辐射传递方程的求解、过热器和再热器烟气侧对流与辐射复合换热及汽温偏差的计算和炉内金属壁温的反演、炉内气固两相流动、燃烧、传热过程的数值模拟、过热器再热器炉外出口汽温的测量、过热器再热器超温问题的工程改造及设备的优化设计等方面进行了研究。

But the researches of CFRP on steel penstocks of hydroelectric stations that beaer pressure have nothing by nowAccording to the experiment of steel penstocks of hydroelectric station reinforced by CFRP,this paper gives plenty of numerical results and analyzes the theoretical and experimental curves .The finite element model and calculation method for steel penstocks of hydroelectric stations are presented.

但是将CFRP应用到水电站压力钢管的研究到目前还没有，通过CFRP加固水电站压力钢管的模型试验研究，本文给出了大量的试验数据，分析了理论与试验曲线，建立了水电站压力钢管CFRP加固的有限元模型并说明了计算方法。

According to freeboard surface arisen from differences of branching river current the water level of the intake and outtake section can be adjusted Based on this principle a numerical modeling of velocity field and concentration field for natural river with branching is established Some important conclusions are obtained from the results of calculation .

本文根据江心洲左右两股汊道流速水头差引起的水面超高对其进出口断面水位进行调整处理，建立了能适应于有天然江心洲的分汊河流平面二维流场和浓度场数学模型。

This volume summary of the main examples of these algorithms on the basic theory and extensive analysis of the computer program design and numerical analysis of the linkages between, which is particularly noteworthy is the author of Random Number Generation procedures for processing and re-form calculation of power series.

本卷总结了主要算法范例及这些算法的基本理论，广泛剖析了计算机程序设计与数值分析间的相互联系，其中特别值得注意的是作者对随机数生成程序的重新处理和对形式幂级数计算的讨论。本书附有大量习题和答案，标明了难易程度及数学概念的使用。

The process calculation of the shell and tube steam heater was carried out with the method of numerical analysis method.

将数值分析方法应用于管壳式蒸汽加热器的工艺计算，很好地解决了试凑法的盲目性和计算工作繁重的问题，并在此基础上用VisualBasic语言开发了管壳式蒸汽加热器工艺CAD软件。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。