infinite region meaning in English
无穷区域
无穷无域
Examples
- So it is necessary to reflect the inner reality physical field ' s numerical number analogy method to analysis and improve the magnetic field and the computing accuracy of the cable ' s eddy - current detection . Ｔ his affords helping for the researching of biased cable instrument in the future . first open domain electric magnetic problem ' s breaking method is done with , which supposing fictitious boundary far away from the region . second breaking the infinite region into the finite region and supposing the electric magnetic is too small to be ignored
通过采用目前处理开域电磁场问题的截断法，人为地设定一个远离待求区域的虚拟边界，将无限区域截断为有限区域，且认为在该边界外面的电磁场已衰减得足够小，小到可以忽略不计，从而令边界上的电磁场场量为零，在此有限区域内采用较为成熟的Ａ ， Ａ法，并且并入库仑规范建立数学模型。 - Associated with a project of the planned xuefengshan tunnel with 7 . 6 km long during the construction of shaoyang to huaihua expressway in hunan province of shanghai to ruili national trunk highway , this paper firstly makes an introduction of the frequently - used analysis & computation methods for tunnel supporting structure . then , based on the analysis of the basic theory about the interaction mechanism of surrounding rock and support structure , a spatial computation model is made , a coupling numerical computation method with 3 - d elastic - plastic finite element and infinite element is proposed , and a comprehensive analysis has been made to the effects of the overall stability and safety of the surrounding rocks of different characteristics , different classes and under different construction methods . and thus the problem of 3 - d infinite region to which applying the general finite ca n ' t do has been resolved
6公里的雪峰山隧道工程，首先介绍了隧道支护结构的常用分析计算方法；然后通过对隧道施工过程中，洞室稳定性与支护结构相互作用机理的深入分析，建立了隧道施工过程的空间计算模型，提出了采用三维弹塑性有限元-无限元耦合的数值计算方法，综合分析了隧道在不同围岩特性和围岩类别条件下，以及不同施工开挖方案等对隧道围岩整体稳定和安全性的影响，从而解决了通用有限元方法难以解决的隧道三维无限域问题；其可充分发挥有限元法在分析非线性方面的有效性和成熟性，以及无限元法在分析处理无限域和半无限域方面的精确性和简便性，为隧道施工过程中围岩的稳定性分析开辟了一条新的途径。 - By comparison , it was clear that the bem could solve the problem not only effectively but also precisely . in the second chapter the theory of weighted residual technique is illustrated and the boundary integral function of the potential problem is deduced by it . methods of obtaining green ' s function fundamental solutions in infinite region and semi - infinite region are presented
第二章首先说明了加权余量法的原理，并由此推出了势问题的边界积分方程，还介绍了无限域和半无限域中格林函数基本解的求法，以及多介质域和第三类边界条件的处理方法，最后说明了边界积分方程的数值解法。 - We adopted here the high accuracy method of using the expansions in orthogonal functions along the normal direction and the effective algebraic mapping to deal with the problem in the infinite region . the initial solutions of two - dimensional harmonic waves are given by landau expansion , and the mean - flow - distortion is calculated by the approximation equation . we can get the initial conditions of ts wave and sub - harmonic wave in the c - type instability by linear pse method
运用landau展开给出了二维谐波的初始解、通过求解线性pse而得到ts波和c型亚谐扰动的初始站值、以及近似地模拟初始站的均流变形值,以此为初始条件,并结合迭代-预估校正方法来实现非线性pse的求解和推进,详细地研究了非平行边界层三维扰动c型失稳过程。