mesh boundary 中文意思是什麼
mesh boundary
解釋
網格邊界-
Based on this milti - hierarchical model, application method for information organization of part is presented. chapter 3 proposes a new rule of arbitrary maximum angles of chord for triangulation and locale optimum, which avoides calculating angles of conventional methods in mesh simplification. moreover, with the introduction of arithmetical average windage concept, optimum method for the boundary mesh retriangulations is presented
第三章針對曲面網格簡化操作過程中出現的空洞剖分問題，討論層次模型的網格優化方法，提出了基於弦內角最大準則的局部網格簡化方法；針對網格曲面上存在的曲折邊界缺陷，提出以邊界輪廓算術平均偏差作為邊界曲折程度評定參數的邊界平滑優化剖分方法。 -
Equations of mesh, shorting contact line, undercutting limit line, meshing limit lines and the existence conditions, angle between the direction of relative speed and the direction of contact line, induced normal curvature about every point on the contact line are established. moreover, the paper also theoretically analyzed the error of the grinded gear surface. on the basis of the theory, the computer program is worked out to automatically produce the contact line and the boundary curves of mesh. analysis of meshing circs under different parameters can be done so that we can gain the best process condition
首先對漸開面二次包絡理論進行了深入的探討，推導出了兩次嚙合的嚙合方程式、瞬時接觸線方程式、根切界限線方程式、嚙合界限線的方程式及其存在條件，相對運動速度方向與接觸線方向的夾角及接觸線上各點的誘導法曲率；此外，還對磨齒后工件的齒面誤差進行了理論分析；並在理論基礎上編制了相應的計算機程序，自動生成接觸線族及嚙合界限線，對不同參數條件下的嚙合情況進行分析，可以使工藝條件達到最佳狀態；最後研究了磨齒裝置，設計了磨齒機的傳動系統。 -
The non - hydrostatic mesoscale model mm5. v3 is used to simulate the wind field, temperature field etc. of the atmospheric boundary layer over beijing area with the mesh resolution of 1km
用非靜力平衡的中尺度模式mm5 . v3模擬了北京地區2000年夏季7月10日11日的風速和溫度場等邊界層特徵。 -
Certain discrepancy remain between the simulation results and the experiment results, not only caused by the turbulent model, but also by the simplification of the inlet boundary condition and the mesh generation. modeling gas - particles interaction flows is complex. in this thesis, gas - phase transport equations coupled with the gas - particle interaction are derived based on the dsm turbulent models to handle the interaction of momentum and kinetic energy of turbulence between the gas and particles
分離器內的固體顆粒運動採用涉及湍流擴散影響的隨機軌道模型和確定軌道模型，同時在湍流模型中加入了顆粒影響的源項，在流場計算的基礎上，模擬了不同直徑的顆粒在分離器內的運動規律及顆粒分離效率，並同理論和實驗得到的數據進行了比較。 -
In geometry fitting, we introduce the scattered data interpolation technology, and by using the corresponding points on the shared boundary between the given facial mesh and the organ to be pasted, the facial mesh can be automatically fitted to the organ to be used. and in texture fitting, we extend the improved field - based morphing algorithm to the corresponding texture map, and with the preprocessing of the histogram - matching method we can obtain smooth replacing result in the texture map
在紋理上，將改進的場變形演算法拓展到人臉模型對應的紋理圖上，不但完成了紋理圖中對應器官區域的替換，同時通過引入以點到邊界距離的函數為權重的線性插值，實現了在替換器官區域從目標圖像到源圖像的均勻過渡；又通過引入直方圖規定化的技術，解決了由於膚色相差較大而產生的邊界不能平滑過渡的問題。 -
For cases with relative large boundary displacement, a window is created enclosing the moving body in which the mesh elements are specified to be deforming adapted to the body motion
處理動邊界位移較大的情況時，必須結合局部重構方法。網格變形區域被限制在包圍動邊界的一個窗口范圍內。 -
Mesh movement strategy is implemented by the combination of mesh deforming and local remeshing, but just using mesh deforming is sufficient for cases with relative small boundary displacement
動網格由網格變形與局部重構相結合的方法實現。對于動邊界位移較小的情況則單獨應用網格變形方法。 -
Boundary condition method just amend a little for intrinsic fem program, and can obtain low frequency sound transfer function of receiver based on existed fem mesh. the big sound source is divided into some elements by lumped sound source method, in which, the biggest size of element is smaller than the smallest wavelength of sound wave
邊界條件法僅對原有的有限元程序作較小修改，並在已有的有限摘要元網格劃分上，能夠求解出接收點處的低頻聲傳遞函數;集中聲源法將大尺度聲源劃分為若干板塊，其最大幾何尺寸小於最小聲波波長。 -
Mathematic mesh is composed of folded covers and could be random set by final user, and physical mesh is composed of real material boundary, joints or discontinuities, phase interfaces etc and could n ' t be artifical
數學網格由折疊的覆蓋組成，物理網格則由實際的材料邊界、裂縫、塊體、不同材料的交接面甚至不同的材料相的界面等組成。 -
The main contributions of the dissertation are as follow : ( 1 ) the possibility of generation hexahedron mesh through tetrahedron conversion method was studied, and a set of feasible method to deal with the boundary condition of constraint and loads has been brought forward
本文的主要工作包括如下幾個方面： （ 1 ）研究了在紫瑞cae基礎上採用四面體轉換法進行六面體網格全自動剖分的可行性並對約束和載荷的處理提出了一套可行的方案。 -
Boundary pre - adjustment method for finite - element mesh generation of closed surface
閉曲面有限元網格生成的邊界預調整方法 -
On the assumption of ignoring the distortion of thickness, this paper determines the rough shape by the geometric modeling method of equal area developing using mixed mesh cell of triangle and quadrangle for the first time, presents the equal area developing arithmetic of quadrangle - triangle. on the virtual geometric symmetry axis, we puts forward the method of determining the developed coordinate of the point on the base band in the development of using regular quadrangle cell, determines the developed shape of internal structure in plane utilizing point - to - point mapping theory. furthermore, we realize the approximate developing of undeveloped - irregular boundary surface using a few triangle cells
本文結合型號研製中小曲率機翼整體壁板類零件坯料展開課題，基於板料厚向變形忽略不計的先驗假設，首創混合四邊形-三角形網格等面積展開的幾何模擬法確定壁板類零件毛坯外形，給出了混合四邊形-三角形網格等面積展開演算法；提出了虛擬分割線的概念，採用虛擬幾何對稱軸，給出了規整四邊形單元展開基帶上結點的計算方法；採用映射原理和求交演算法確定了壁板內部結構信息的展開定位。 -
The numerical simulation computations of the three dimensional viscosity fluids are done to research the turbomachinery properties, which includes the determination of the computation equation, the finite mesh and the determination of boundary conditions
進行了水輪機葉片切割前後轉輪內部三維粘性流的數值模擬計算，其中包括方程的確立、方程的變換和離散、邊界條件的確定。 -
The simulation methods and content about the mesh generation, the boundary condition of rotating wheels and moving ground of single car, and about the steady study on the two car running in row and overtaking process has shown the calculation results reliability and the numerical simulation methods feasibility. based on the comparison and analysis of mesh strategy, the descartes mesh strategy and the tetrahedron + prism mesh strategy are chosen. the continuous unsteady overtaking process of the vehicles, traveling with constant but unequal speed is replaced by a finite numerber of steps ; in each the relative position of both vehicles changes
最後利用滑動交接面技術和動網格技術進行了瞬態的轎車超過某國產大型運輸車的數值模擬研究，在此之前國內外對此項技術均未有系統的研究和可借鑒的結論，以側向間距0 . 5倍轎車車寬為典型，用定性和定量兩種方法對比分析了超車過程中的轎車和運輸車與其單車情況及前文穩態模擬的異同，並將六種側向間距的瞬態結果與單車情況和穩態模擬結果進行了對比分析。 -
2 ) for making the meshes consistent on the common boundaries of adjoining surfaces, a new approach of boundary discretization is employed. 3 ) the boundary - representation structure is adopted to fulfill the mesh generation over combined surfaces. 4 ) the quality of surface meshes is improved by point creation on 3d scan lines and diagonal swapping procedure
通過引入可移動的虛邊界解決了閉合曲面的剖分問題；通過對鄰接曲面公共邊界的統一處理，保證了組合曲面拼合處網格的相容性；以邊界表示數據結構為基礎實現了三維組合曲面的全自動網格剖分；採用空間掃描線布點、診斷交換等技術，優化了網格的質量；並以autocad為支撐平臺objectarx為開發工具，開發了一個基於幾何造型的曲面三角形網格全自動生成程序。 -
( 3 ) based on the method of nodal virtual flow rate of an unvaried finite mesh, the theoretic arithmetic for improving drainage substructure and the handling method of hole boundary conditions are discussed in order to solve the problem of drainage holes simulation
（ 3 ）本文針對壩基密集排水孔的模擬問題，詳細論述了基於固定網格結點虛流量法之上的改進排水子結構技術的演算法理論及孔內邊界條件的處理方法。 -
As an example of 3d program with high quality mesh, proper boundary & initial conditions and ingenious simulation strategy, numerical analysis of flow - fields in hylte nozzle and cavity of dfcl running on fuel system of ( nf3 + h2 + he ) / d2 and experimental stagnation parameters, has been performed using vibration - state - unbalance & rotation - state - balance model, and a detailed kinetic model including 111 one - way primary reactions expressing by finite rate equations between thirteen species. the coefficients of transportation used in the analysis are calculated by employing the formulas of molecular kinetics
新建立的三維程序在高質量網格、合理的初邊值以及模擬方案基礎上，採用振動非平衡?轉動平衡模型和有限速率方程表達的111個單向基元反應的化學動力學模型，利用分子運動理論計算的輸運系數和工程實驗採用的滯止參數，對運轉（ nf _ 3 + h _ 2 + he ） d _ 2燃料體系的df激光器的hylte噴管和光腔進行了數值模擬分析。 -
Abstract : three - dimensional, time - dependent, compressible fluid flow problems have been studied with the finite volume scheme based upon an arbitrary lagrangian - eulerian scheme. a general program for arbitrary mesh has been developed. this program can be used to the fluid flow with arbitrary shape boundary condition and moving boundary condition. as an example, the fluid flow in a simple tundish is calculated, and the time - dependent fluid flow distribution is given out
文摘:在歐拉與拉格朗日耦合的框架下，利用有限體積法對非定態三維可壓縮流體流動問題給予研究，開發了一般網格下的通用計算程序.該程序適用於計算復雜幾何邊界條件、運動邊界條件等情況下流體流動問題.作為例子，計算了簡單中間包內流體的流動情況，給出了隨時間變化的流場分佈 -
In the process of adjusting computing program, the computation of air gap between stator and rotor is very important to overall performance of computing program. the algorithm of finding boundary point according to input logic data, including the outer boundary of rotor and the inner boundary of stator, is proposed to deal with the problem of mesh by the way of relative motion between stator and rotor
修改計算程序的過程中，對定、轉子氣隙部分的剖分及計算是關鍵部分，本文具體詳細地給出了定、轉子相對運動的實現方法中由邏輯數據確定用於形成運動邊界的邊界節點演算法，邊界節點指用於氣隙剖分的兩條邊界節點：轉子外邊界節點和定子內邊界節點。 -
The discrete optimization of boundary curve and the optimization of polygon clipping are discussed on the basis of the above research, this surface automatic mesh generation have applied to cae software successfully which can create high quality element. the method is steady and reliable. the speeding of the meshing is good
在上述技術研究的基礎上，將曲面自動網格劃分演算法成功應用於板料成形模擬的cae軟體中，該演算法具有自適應能力強，網格生成速度快，穩定可靠等優點。
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