Stefan problem is free boundary condition of physical equation in thermal transfer when the boundary change.

斯蒂芬問題是研究邊界變化時(shí)導(dǎo)熱規(guī)律的的物理方程的自由邊界條件欧美俄罗斯插插性视频。

This paper devoted to the initial boundary problem of a degenerate reaction system with the null Dirichlet boundary condition.

研究一類具有Dirichlet邊界條件的非局部退化反應(yīng)擴(kuò)散系統(tǒng)的初邊值問題久久无码中文字幕久婷婷。

The primary objective of this thesis is to use multigrid method for solving nonseparable elliptic equations with Dirichlet boundary condition on a rectangle. Of course, this method can be applied with any boundary conditions.

這篇論文主要之目的是使用多重網(wǎng)格法來解一些不可分離的橢圓方程式有著Dirichlet條件在矩形的區(qū)域上(當(dāng)然這種方法也可應(yīng)用在其他的邊界條件下)毛片黄色网站在线观看。

In theprocedure of natural boundary reduction,the Green function of the original equa-tion with the Dirichlet boundary condition is used,but the Green function could notbe obtained for a general domain.

在自然邊界歸化的過程中要用到原始微分方程Dirichlet問題的Green函數(shù)色呦呦.m3.u8，但是對(duì)于一般區(qū)域Green函數(shù)是不容易得到的亚洲5566。

A scalable parallel algorithm of block tridiagonal systems for solving the initial boundary value problem of 3D-parabolic equation with the Dirichlet boundary condition is discussed.

對(duì)三維拋物型方程帶Dirichlet邊界條件初邊值問題的離散系統(tǒng)使用塊三對(duì)角可擴(kuò)展并行算法求解无人区卡一卡二卡三乱码直播。

At last, we are concerned with the global existence and asymptotic behavior of smooth solution to the initial boundary value problem for the bipolar hydrodynamic model with the Neumann and Dirichlet boundary condition in the one-dimensional case, respectively. The difficulties from the coupled action between electrons and holes are carefully dealt with.

另外，本文也深入研究一維空間雙極半導(dǎo)體流體動(dòng)力學(xué)模型初邊值問題光滑解的整體存在性及其衰減性，分別討論了兩類在實(shí)際應(yīng)用中重要的邊值條件爱搞社区，克服了由于電子和空穴之間的耦合作用所帶來的困難国产精品iAGO视频网免费播放。

A scalable parallel algorithm of block tridiagonal systems for solving the boundary value problem of 2D Poisson equation with the Dirichlet boundary condition is discussed.

對(duì)二維Poisson方程帶Dirichlet邊界條件邊值問題的離散系統(tǒng)使用塊三對(duì)角可擴(kuò)展并行算法求解。

Both the Dirichlet boundary conditions and the Neumann boundary condition are considered.

分Dirichlet和Neumann兩種邊值條件進(jìn)行了討論欧美一区二区精品视频中国。

When the boundary condition described above applied, we found that there's almost no influence on pattern styles, however, influence on pattern distribution.This study can simulate concentric eyespot and wave stripe along the boundary of wing in Nymphalidae, besides, we can also simulate smaller and non-regular wave pattern which distributes over the wing.

本研究最后結(jié)合以L系統(tǒng)字串重建的翅脈與涂林系統(tǒng)欧美VA日本一区，配合不同系數(shù)并將重建之翅脈作為邊界條件進(jìn)行蝴蝶斑紋形成研究，發(fā)現(xiàn)邊界條件對(duì)我們所使用的四種涂林系統(tǒng)所產(chǎn)生的斑紋型態(tài)沒有顯著影響一级毛片一级毛，但對(duì)斑紋分布則是會(huì)有一定程度的影響久久精品国产精国。

In the analysis, firstly, the flux boundary condition is used to simulate the frictional heat resource between wheel and rail. The non-steady heat transfer between the contacting surfaces of the wheel/rail, heat-convection and radiation between the wheel/rail and the ambient were all taken into consideration. Therefore, a heat coupling model of the wheel/rail in rolling/sliding is put forward to calculate the frictional temperature rise in the wheel and rail. Secondly, after the temperature distribution of wheel/rail, due to friction, is calculated, substitute the thermal load with equivalent fictitious body force and boundary distributed force loaded on the nodes of the corresponding elements. The wheel-load is applied to the center of the wheel.

首先，用熱流邊界條件模擬輪軌接觸界面的摩擦熱源欧美黑人又粗又长精品，考慮輪軌間的非穩(wěn)態(tài)熱傳導(dǎo)高端自拍无码在线、輪軌自由表面與環(huán)境的熱對(duì)流、熱輻射的影響免费国产视频xx，建立輪軌滾動(dòng)接觸熱耦合有限元計(jì)算模型91在线欧美超碰，分析計(jì)算輪軌滾、滑工況下的摩擦溫升jizz官网；其次国产在线视频一区第二页，以求得的輪軌溫度場(chǎng)結(jié)果作為求解輪軌應(yīng)力場(chǎng)的已知條件，輪載以集中力形式直接加載于輪心處国模裸体一区二区，將摩擦溫升引起的熱載荷等效為假想體力和熱邊界面力狼友视频首页在线观看播放，施加于相應(yīng)的單元節(jié)點(diǎn)上，建立了輪軌熱—機(jī)械載荷耦合作用的熱彈性平面應(yīng)力模型性爱资源网站，分析熱—機(jī)械載荷作用下的輪軌應(yīng)力場(chǎng)麻豆自拍偷拍爽图。