cylinder boundary 中文意思是什麼
cylinder boundary
解釋
柱面界限-
Investigation on boundary layer prediction models near head wall in cylinder of diesel engine
柴油機缸內近氣缸蓋壁面邊界層預測模型的研究 -
In the first part of the paper, the explicit form of difference equation and periodic boundary condition is derived in cartesian coordinate system. secondly, the dispersive characteristic is analyzed in cylinder coordinate system for many high power microwave devices use cylinder sws. and then the method is extended to calculate the band structure of 2 - d photonic crystal, a modified yee ’ s grid is introduced to calculate the dispersive characteristic in the case of triangular lattice, so that both square lattice and triangular lattice cases can be solved in cartesian coordinate system
周期電磁結構的一個重要應用就是用作高功率微波器件中的慢波系統，考慮到目前大部分高功率微波器件的慢波系統多採用圓柱周期結構，在論文第四章中，在圓柱坐標系下，給出了差分方程和周期性邊界條件的具體形式，同時編寫程序，分析了milosws ，盤荷慢波結構的色散特性。 -
This boundary is like the outer circumference of the escher print or the surface of the solid cylinder i considered earlier
這個邊界就類似艾雪版畫的外緣或者前面提過的圓柱體的表面。 -
This paper studied two - dimension model of rotor and cylinder and builded the finite element model. generally take the rotor and the cylinder as control objects ， definite their boundary conditions ， solute their temperature fields ， and then analyst their bear expansions and distortions as well as thermal stress distribute ， to control the courses ， and keep the unit the most optimum operating condition. and put the theories into practice developed by c + + program, used as the important part of the online monitoring and management system of life of the steam turbine
本文對汽輪機轉子和汽缸的二維模型的進行分析，建立有限元模型；將汽輪機轉子和汽缸作為控制對象，確定其邊界條件，求解其溫度場，分析其熱膨脹、熱變形以及熱應力分佈；採用c + +語言編制汽輪機高壓缸、中壓缸以及缸體的溫度場實時在線監測程序，作為汽輪機壽命在線監測與管理系統的核心部分，用以指導汽輪機的啟停及運行過程，使機組可以安全的、經濟的運行。 -
Lattice boltzmann method for oscillatory boundary layer of circular cylinder flow
方法模擬圓柱繞流的振蕩邊界層 -
The paper researches the transient time precision and the following problem of the results developing with time for 2 - d high order blocking and matched method, at the same time, anlysing the stability of high order methods including boundary conditions. the results show that the domain decomposition and matched method using high order method can follow the time developing solution of taylor problem well, the computation result of the flow over a single or two tandem arranging circular cylinder agree the experiment and others " results well, moreover, the panting results of lift and drag coefficient are better than others
本文利用高精度分塊耦合求解方法，對其瞬態時間精度和非定常時間發展解的跟隨性問題進行了研究，同時也對包含邊界條件的線法高精度格式的穩定性也作了分析，研究結果表明高精度的分塊耦合求解方法可以很好地跟隨taylor問題的時間發展解，與單圓柱繞流和雙圓柱繞流的實驗結果比較以及他人結果比較符合很好，對升阻力系數在渦脫落時的脈動問題的結果優於他人結果。 -
Then, the flow field composed of two basic flow field, which is a part of the complex - cylinder flow field, is analyzed numerically by solving each basic flow field respectively and coinciding them on their common boundary
其次，對二個基本流場組成的復合流場，採用各流場各自計算，在共有界面上進行迭代耦合的方法求解。 -
Lattice boltzmann method ; boundary treatment ; flow around cylinder ; parallel computation
玻爾茲曼方法邊界處理圓柱繞流并行計算 -
Lbm is a recent developed method with advantage of high parallel performance and easy boundary treatment. for curvilinear boundary, a new method has been adopted for simulation of flow around cylinder with
Lattice boltzmann method lbm是一種近年來發展的一種數值方法。它具有并行效率高，邊界處理簡單的特點。本文採用一種能對曲線邊界進行較好處理的方法，用lbm對 -
For the scattering field caused by the finite - length conducting and permeable cylinder, the boundary condition that the normal component of electrical strength is zero in conducting medium, i. e. en = 0, was used to determine the separation constant of boundary value problem in the past
以往含有有限長導電導磁圓柱體散射場的求解，大都根據導電媒質中電場強度法向分量為零，即e _ n = 0 ，這一邊界條件來確定邊值問題中分離常數的取值。 -
Abstract : a numerical investigation of three - dimensional separated flows about a hemisphere - cylinder is presented. the analysis has been restricted to transonic and laminar flows. results are given for the complex flow field structures including shock, boundary layer, separated flow, vertical flow and their mutual effects. the topological structures of the separated flow is shown
文摘:本文數值模擬了半球柱在跨音速、中等攻角時的粘性層流繞流，研究了流場中的復雜三維分離形態結構，其中包含流向與橫向的主分離、二次分離、以及激波邊界層的相互干擾，解釋了在球柱接合部精確捕獲的壓力波動與流動主分離、二次分離的影響關系，這個現象是前人的計算5 ， 6未捕捉到的。 -
The flow field with moving boundary in a complex cylinder is simulated numerically in this thesis
本文對多級液壓缸內動邊界流場進行了分析和數值模擬。 -
With the development of computer and computational mechanics, the numerical simulation of unsteady flow with moving boundary will be a fruitful research area. in this thesis, some significant progresses have been achieved in the numerical simulation of complex - cylinder flow field with moving boundary
隨著計算機、計算流體力學的發展，液壓元件內動邊界流場的模擬，將成為一個研究方向，本文在這方面作了一些初步的工作。 -
The purpose is to do some basic work of the simulation of the flow field with moving boundary in hydraulic elements, and to present useful numerical method and results for the designer who use the complex cylinder. the numerical simulation is one of the most important means to indicate possible ways to improve the properties of hydraulic elements
其目的：一是為了給設計採用多級缸的液壓系統（如上拋微重力裝置）提供參考；二是通過對動邊界流場數值求解方法的探索和研究，為液壓元件內動邊界流場的數值模擬奠定基礎。 -
The experimental and computational results agree well with each other. the conclusion is that the proposed method, i. e., to divide a complex - cylinder flow field into basic flow field, and then to solve them respectively and coincide them on the common boundary, is a good way to simulate the whole flow field. further more, to solve basic flow field with the project method and coordinate transformation is suitable
實驗表明：理論計算是可靠和正確的；投影法結合坐標變換法是求解基本動邊界流場的有效方法；基於基本流場的求解，將復雜流場分解為幾個基本流場，分別求解，然後在其共有邊界上將涉及的基本流場耦合迭代，直到物理參數一致，是求解某些復雜動邊界流場的可行方法。
分享友人