The simple algebraic procedure is used to form nearly orthogonal 2—D C—type and H—type bodyfitted grids for bodies of revolution, which is then used to generate 3—D C—O and H—O bodyfitted grids for fuselages.

五熟女性生活视频、用簡單的代數(shù)方法生成了近于正交的旋成體子午面"C"型及"H"型貼體坐標網(wǎng)格www,AV天天27，并以此為基礎(chǔ)構(gòu)造了三維任意截面機身的"C-O"型及"H-O"型貼體坐標網(wǎng)格欧美免插。

An adaptive grid scheme controlling cell area is used to generated grids in the divergent section of symmetric annular nozzle, and the generated grids are used in the flowfield calculation through the uncoupled way. The elliptic equations are used to generate grids in three dimensional regions of FDN divergent section, the source terms used in the equations employ a mathematical form which is independent of the boundary shape and of the boundary grid point distribution, the free parameters contained in the source terms are determined by the two restraint conditions, the intersection angle of transverse grid lines with boundaries and the local curvature of the transverse grid lines at the boundaries, and the interior grid distribution controlled directly by the grid point distribution assigned on the boundaries is realized, it makes the grid more clustering near the nozzle wall. For the generated grids in the whole computational regions have a good smoothness and orthogonality, the accuracy of calculation in the flowfield is ensured.

對軸對稱的環(huán)形噴管采用控制網(wǎng)格面積的自適應(yīng)網(wǎng)格方法對擴散段部分進行了網(wǎng)格生成欧美色色影院，并通過非耦合方式應(yīng)用于噴管的流場計算中；對強制偏流噴管擴散段內(nèi)的三維區(qū)域采用橢圓型方程進行網(wǎng)格生成亚洲性经典XXXXHD，方程中的源項采用了與邊界形狀和邊界網(wǎng)格點分布無關(guān)的數(shù)學(xué)形式电影一级特黄片，源項內(nèi)的自由參數(shù)由橫向網(wǎng)格線與邊界的交角及橫向網(wǎng)格線在邊界處的局部曲率兩個約束條件來確定婷婷五月丁香九月，實現(xiàn)了由邊界上的網(wǎng)格分布直接控制內(nèi)部的網(wǎng)格點久久亚洲精品少妇毛片无码，使壁面附近具有較密集的網(wǎng)格，并且在整個計算區(qū)域內(nèi)的網(wǎng)格都具有良好的光滑性和正交性国产综合在线观看视频，從而保證了流場計算的準確性a黄色网址。

In this paper, the quality of unstructured grids generated by Delaunay Triangulation Method and Bubble Packing method is compared by the classical lid-driven square cavity flow solved by SIMPLE algorithm on collocated unstructured grid. The velocity distributions on vertical and horizontal center lines are in good agreement with bench mark, which shows that both of the two grids can be used in CFD.

本文利用經(jīng)典的方腔頂蓋驅(qū)動流對Delaunay方法和Bubble Packing方法所生成網(wǎng)格的質(zhì)量以及基于非結(jié)構(gòu)化同位網(wǎng)格的SIMPLE算法進行了驗證，發(fā)現(xiàn)兩種網(wǎng)格均可用于單相流動的CFD計算高潮流水抽搐免费视频在线，垂直與水平中心線上的速度分布與基準解相比非常吻合并可得到良好的結(jié)果下载日韩精品视频在线观看免费。

You have brine tank systems set up with grids and without grids.

你的鹽箱系統(tǒng)里面有帶鹽格柵的也有不帶鹽格柵的。

The main research contents are stated asfollow: 1. Simplified analysis method of space grids structuresDouble-layer space grids have been assumed as sandwich plate, and are analyzed bythe nontraditional theory of plate with consideration of shear deformation and threegeneralized displacements. Using the theory of energy variation, simplified methodsfor bending, stability and vibration analysis of double-layer space grids have been putforward based upon the idea of split rigidity. The formulas for calculating internalforces, displacements, critical load and natural frequency have been given out. Set thestable cables and bearing cables in hyperbolic paraboloid cable nets are all replaced bytruss-cable to form truss-cable nets structures. Natural vibration analysis method fortruss-cable nets structures has been put forward using the energy variation method andRayleigh method.

主要內(nèi)容包括： 1亚洲观看一区二区三区、空間網(wǎng)格結(jié)構(gòu)靜動力簡化分析方法把網(wǎng)架結(jié)構(gòu)簡化為夾層板亚洲男人天堂AV网站在线观看不卡，采用考慮剪切變形的具有三個廣義位移的平板彎曲理論進行分析，基于分解剛度思想利用能量變分原理提出了網(wǎng)架結(jié)構(gòu)彎曲免费看很黄很黄A片夜色直播、穩(wěn)定與振動分析的簡化計算方法免费人成网址在线播放，給出了位移、內(nèi)力99re热免费视频、屈曲臨界荷載和固有頻率的計算公式国产在线精选；將雙曲拋物面索網(wǎng)中的穩(wěn)定索與承重索均用勁性索代替形成勁性索網(wǎng)結(jié)構(gòu)，基于能量變分法和Rayleigh法給出了勁性索網(wǎng)結(jié)構(gòu)固有振動分析的簡化計算公式日韩一级欧美一级二级在线观看视频。

The material job and main conclusion are as follows:(1)A simple boundary orthogonalization procedure independence grids generation method is put forward on the base of algebraic grid generation method; Data structure and computational model on interface are established aiming at blocks of structured grids.(2) SIMPLE procedure is established in nonorthogonal grids by use of the finite volume method and in-depth discusses on special topic such as boundary condition in nonorthogonal grids, deferred correction method and grads compute on calculational nodes, and so on.

本文完成的具體工作和主要結(jié)論如下： 1以代數(shù)網(wǎng)格生成方法為基礎(chǔ)提出了一種簡單的欧美一A片网站、可獨立于網(wǎng)格生成方法之外的邊界正交化技術(shù)；針對分區(qū)結(jié)構(gòu)網(wǎng)格系統(tǒng)建立了分區(qū)交界面處的數(shù)據(jù)結(jié)構(gòu)與計算模型轮奸网站； 2利用有限體積方法在非正交同位網(wǎng)格系統(tǒng)中建立了SIMPLE求解算法国产精品免费观看26uuu，對非正交網(wǎng)格系統(tǒng)中的邊界條件、延遲修正技術(shù)及計算節(jié)點的梯度計算等專題進行了深入討論久草久草久草。

As the tetrahedral grids exist in the majority area, the pentahedral prism grids are adopted near the boundary, which meets the SST model's requirement of mesh in the boundary layer. Pressure recovery factors under different number of grids are calculated so as to decrease the error from coarse mesh, then the suitable number of grids is obtained.

流場大部分區(qū)域為四面體網(wǎng)格亚洲啪啪黄片，在邊界附近采用加密的五面體棱柱型網(wǎng)格，滿足了SST模型對邊界層網(wǎng)格的要求同人漫18禁福利网站；為了減少網(wǎng)格過粗引起的汁算誤差欧美日韩午夜情爱在线视频观看免费，還通過計算不同網(wǎng)格數(shù)下尾水管的壓力恢復(fù)系數(shù)來優(yōu)選出合適的網(wǎng)格數(shù)目。

The paper puts forth that the numerical model of actual forming part is reconstructed by RE and the surface is regarded as actual trimmed surface, then grids and nodes mapping relationship between design model and actual forming part is acquired through compelling deformation simulation, and the design trimming line is dispersed into points according to a certain precision and the projective points and the coordinate values of the intersection points of projective line on the grids formed by discrete points are calculated along trimming direction, the new coordinate values of projective points and intersection points of projective line after deformation are calculated based on the mapping relationship of grids and nodes, the deformed trimming line can be acquired through fitting the points into curve.

本文提出通過逆向工程技術(shù)重構(gòu)出實際沖壓件的型面并以此型面為修邊后實際沖壓件的型面，然后采用強制變形仿真的方法建立設(shè)計模型和實際沖壓件重構(gòu)模型的網(wǎng)格和節(jié)點映射關(guān)系日韩免费精品视频。將設(shè)計修邊線按一定精度離散成點欧洲美女操逼视，然后根據(jù)修邊方向計算出各點在網(wǎng)格上形成的投影點和投影線交點，根據(jù)之前計算出來的網(wǎng)格和節(jié)點映射關(guān)系就可以計算出投影點和投影線交點在變形后的新坐標国产黄色视频99视频，將其擬合成曲線就可以得到變形后修邊線的形狀欧美丰满熟妇XXXX性多毛。

Some models were designed where the unique tetragon and hexagon grids borrowed from the wing structure were used as the basic elements, these models were analyzed numerically, it is shown that the model consisting of tetragon grids is much stiffer than that consisting of hexagon grids, while, more material is used in the first model;crinkling models based on tetragon grids or arched models consisting of hexagon grids become more stiffer than flat ones;hybrid models consisting of tetragon grids and hexagon grids can realize a proper balance between material saving and stiffness improving.

分別提取四邊形、六邊形的基本網(wǎng)格日本一本区免费中文高清，建立結(jié)構(gòu)模型黄色视频一区二区免费，并對它們進行非線性數(shù)值分析。研究發(fā)現(xiàn)：四邊形網(wǎng)格結(jié)構(gòu)剛度大三级做a视频免费观看，六邊形網(wǎng)格結(jié)構(gòu)剛度邢确嬗耙裟愣摹；而從材料利用率角度來講www.精品2区三上悠亚.com，六邊形網(wǎng)狀結(jié)構(gòu)更省材料欧美图片日韩图片10p；起皺對四邊形網(wǎng)格結(jié)構(gòu)剛度有加強，而起拱對六邊形網(wǎng)格結(jié)構(gòu)剛度有提高中文字幕一区二区三区人妻少妇；如果將四印度特级精品三级AV、六邊形的網(wǎng)格進行合理搭配，可以使結(jié)構(gòu)剛度和材料利用率得到優(yōu)化riAV网。

Analyses and numerical experiments show that the ARJM is much faster than RJM. The geometric qualities of rezoned grids by ARJM are equal to or even better than those by RJM. The rezoned grids obtained by ARJM are closer to Lagrangian grids than those by RJM.

分析及數(shù)值實驗表明久久久国产精品午夜一区，與參考Jacobian方法相比，不僅能大幅度降低執(zhí)行時間欧美日韩专区国产一区，而且優(yōu)化后的網(wǎng)格在幾何品質(zhì)方面相當(dāng)接近五月月色开心婷婷久久合，甚至更優(yōu)，得到的網(wǎng)格與Lagrange網(wǎng)格更接近噜噜在线。