查询词典 numerical computation

On the basic of above job a mathematical model of simulation turbulent flow with free surface is established and triumphantly applied to numerical computation on 2D spillway and 3D spillway with frusta of brake.

自然界中的流体流动问题一般都具有三维性和湍动性，对于最常见的流体—水则同时还拥有自由表面，水利工程中绕闸墩的泄洪水流、船舶工程中的船体绕流等均具有上述流动的三种特性，这三种特性是计算流体力学领域非常重要的研究内容和方向。

3D integer model of spillway and frusta of brake are established and numerical computation of 3D viscous flow over spillway is completed. The influence of frusta of brake for design parameters such as shape of free surface,pressure on dam,flux coefficient is computed aim at type of frusta of brake and disposal on dam and compute result of different type of frusta and disposal model is compared.

6通过建立溢流坝和闸墩的三维整体模型，完成了对三维过坝水流粘流场的数值计算，针对闸墩的型式及在坝面的布置计算了闸墩对水面线形状、坝面压力、流量系数等设计参数的影响，并将不同墩型与布置形式的计算结果进行比较。

The design demand of higher efficiency magnetron has attracted many researchers for further contributions to the theoretical research of magnetrons. Especially, many valuable results of theoretical research have been obtained by using numerical computation and computer simulation for the better understanding and perfection of the magnetron theory.

更高效率磁控管的设计要求吸引了许多学者致力于磁控管的理论研究工作，特别是在利用数值计算和计算机模拟方法深入研究和进一步完善磁控管的理论方面已取得了重要的成果。

This paper presents a viscous computation method by which the problem of numerical simulation of radiation force and resistance of hybrid monohull is solved and the viscous effect of Hybrid monohull on reducing longitudinal motion is found.

本文用黏性计算方法对新研发的高耐波性单体复合船型的辐射力和阻力进行了数值模拟，揭示了单体复合船型减纵向运动的黏性效应，黏性计算结果与实验值比较，表明本文应用的黏性方法可用于计算单体复合船型的水动力，提高单体复合船型耐波性预报精度，对深化单体复合船型的优化设计具有重要的参考价值。

This paper reviewed the developments in 2-D numerical model of the water flow. By means of the latest observation data of the prototype, the detailed analysis was made on the major thalweg, section, island and bottomland, the erosion and deposition of the river bed and the scour hole near the dock and the law of the fluvial process was obtained. Based on the related references, the evolution trend of the channel after the Three Gorges was finished was predicted. The 2-D mathematical model of the water flow was set up and validated using the latest data. With the model, the flow and velocity of several cases were calculated. The stability computation of the bank at the typical section under difference conditions was carried out by adopting the world widely used Geo-Slope slope stability analysis program. Finally, the synthetical evaluation on the influence of the project on the flood level, velocity, river circumstances, bank protection and flood prevention was made and the conclusion that the construction of the dock had little effect on the flood discharge was obtained.

本文介绍了平面二维水流二维模型研究进展，对河道历史演变概述，通过最新原型观测资料对河道近期主泓线、断面、洲滩、河床冲淤、码头附近冲刷坑等进行详细分析，总结近期河道演变规律，并参考有关文献，对三峡建成后河道演变趋势进行预测；建立了平面二维水流模型，并根据最新资料对模型进行率定和验证，采用模型对几种工况组合进行壅水和流速计算；采用国际上广泛应用的Geo-Slope滑坡稳定分析程序对几种工况条件下工程断典型断面岸坡进行稳定性计算；最后总结工程建设对洪水位、流速、河势、堤防及防洪抢险等方面进行综合评价，得出码头建设对行洪影响较小的结论。

Binary system ; activity ; phase diagram ; spline function ; numerical computation ; computer applications ; Free terras ; activity coefficient

二元体系；活度；相图；样条函数；数值计算；计算机应用；活度系数

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。

Based on the numerical computation results and considered the contribution,efficiency and anti-corrosion capacity,the optimum scheme is selected and applied.

根据计算结果，综合考虑水轮机的出力、效率、及汽蚀性能优选出切边的最佳方案并付诸实施。

The flow conditions in the outlet section of the suction box and in the entrance section of discharge passage are substantially different from those assumed in numerical computation, resulting in notable influence on hydraulic losses and pumping system performance.

研究发现，水泵叶轮旋转和导叶出口剩余环量与进、出水流道的内部流场相互作用，进水流道的出口水流条件和出水流道的进口水流条件与单独计算时的假定有本质不同，对进、出水流道的水力损失和装置性能有显著的影响。

In allusion to the characteristic of riblets surface, the computation region, grids and flow parameters were dealt with reasonably, and mechanic similarity principle was brought forwards into fluid field numerical simulation.

针对沟槽表面流场的特点，在数值计算过程中对其计算域、计算网格及其流动参数进行了合理化的处理，并尝试将力学相似原理运用于沟槽表面流场的数值仿真。

There had been a moment during the breakfast meeting, though, after the backslapping and the small talk and when all of us were seated, with Vice President Cheney eating his eggs Benedict impassively and Karl Rove at the far end of the table discreetly checking his BlackBerry, that I witnessed a different side of the man.

那次早餐会期间，在表示过关心和寒暄以后，我们所有人坐了下来，我注意观察了一下，副总统切尼面无表情地吃着班尼迪克蛋（Eggs benedict，源自美国，以英式松饼、火腿、水煮蛋以及荷兰酱组合而成），卡尔。罗夫在餐桌的远端谨慎地经常查看他的黑莓手机，我目睹了他所不为人知的一面。

Talk Undelete failed; someone else may have undeleted the page first.

Talk 无法删除选定的页面或图像（它可能已经被其他人删除了）。