boundary condition 中文意思是什麼
boundary condition
解釋
【數學】邊界條件。-
Due to nonlinear bottom boundary condition, the generation of internal tides over finite topography can only be deal with by using of ray - tracing method beforetime. the transforms introduced in this dissertation make it possible use eigenvalue method to investigate the generation of internal tides over finite topographies
由於非線性邊界條件的使用，前人處理有限地形上內潮的產生問題只能求助於射線理論，本文提出的坐標變換將若干海底地形變換成平底，從而使得利用特徵值方法研究這些地形上的內潮生成問題成為可能。 -
By reflection we have added another boundary condition.
通過鏡像法我們就得到了另一個邊界條件。 -
The remaining boundary condition leads to a transcendental equation.
剩下的一個邊值條件導致一個超越方程。 -
On ideal boundary condition a problem of conformal equivalence
理想邊界時的共形同胚問題 -
A one - dimensional oceanic mixed layer model with the m - y level - 2. 5 turbulence closure schemes is employed. the rate of energy loss by breaking waves is estimated by parameterization and incorporated into the model as a source of turbulence kinetic energy ( tke ) by modifying the existing surface boundary condition of tke equation. the velocity field and turbulence energy budget are calculated under different forcing conditions ( the results given below are for a wind speed of 20 m / s. )
採用一維2 . 5階湍封閉混合層模式，根據參數化方法對波浪破碎導致的能量耗散率進行了估計，通過改變湍動能方程的上邊界條件引入波浪破碎對湍動能生成的影響，計算了不同風應力強迫下的混合層流場結構和湍能量收支（下述給出的結果是取風速為20m s得到的） 。 -
First by estimative calculation the final boundary condition can be gained, then the accurate result of three - dimension temperature field and stress can be gotten through placing accurate boundary condition
得到了三維溫度場和應力場數據結果。在計算過程中採用了根據實測值反算的思路，使計算得到的溫度場有可靠的實驗依據。 -
Because of the flexuous coastal line and the diverse topography of zhejiang province, nested grid method is used to simulate the interested research area with fine grids of 1 ' 1 ", and analyses the whole area of bohai sea, yellow sea and east china sea, including the seas adjacent to zhejiang, with wide grids of 10 ' 10 ". the opening boundary condition of the small area is obtained from the calculation results in large area
針對浙江近海岸線曲折，地形多變的特點，引入網格嵌套技術，對我們感興趣的研究區域採用1 1細網格進行計算，而對包括浙江近海在內的整個渤、黃、東海大區域則用10 10粗網格；其中，小區域的開邊界條件由大區域的計算結果來提供。 -
Effect of boundary condition on hcci combustion process of n - heptane
邊界條件對正庚烷均質壓燃燃燒過程的影響 -
At first the finite element theory for temperature analysis is introduced, and then mainly discussed the calculation models of cement hydration heat and the boundary condition under sun radiation
首先對這一方法的基本原理進行了簡要的介紹，著重探討了計算中的水化熱計算模型、日照邊界條件處理等。 -
In recent years, plentiful and substantial fruits achieved by the lb method in simulations of hydraulics, multiphase flows, flows in porous media and heat transfer as well as magnetohydrodynamics, have revealed a broad perspective of application of this method, it will become a powerful competitor to the conventional approaches. in order to absorb the recent achievement in theory and application of the lb method, explore new ways in hydraulic computation to promote the development of practice, some work is car ried out in this thesis, as following : advances in the theory research and application, deductive process of the d2q9 model and some other commonly used models of the lb method are summarized. based on the hydrodynamic and general boundary conditions, a new joint boundary condition is presented, it integrates advantage of the two conditions above and obtains very good results in dealing with all kinds of boundaries of flow fields
為了消化和吸收近年來lb方法在理論和應用方面的新成果，探索在水力計算方面的新途徑以促進lb方法實用化的發展，本文進行了下列研究工作：綜述了lb方法在理論研究和實際應用方面的新進展，以及d2q9模型的推導過程和其他一些常用的模型；在水動力邊界條件和通用邊界條件的基礎上提出了一種新的聯合邊界條件方法，它綜合了上述兩種邊界條件的優點，在流場的各種邊界處理中取得了非常好的效果，經過模塊化的處理以後這種邊界條件具有更好的實用性；針對均勻網格的lb方法計算效率較低的不足，提出了雙重網格的latticeboltzmann方法，通過二維poiseulle流動、后臺階流動和渠道方槽流動三個算例的模擬，證明這種方法能夠明顯地提高流場模擬的計算效率；此外，根據復雜區域流場的特徵提出了latticeboltzmann方法的分塊-耦合演算法，利用lb方法的計算特性實現塊與塊之間的數據交換，充分利用計算資源提高計算效率，通過對「 t 」型、 「十」型和「 x 」型分岔管道流場的模擬，展示了這種演算法的特徵和優點，以及它所具有的應用前景。 -
Radar cross section ; dielectric - coated conductor ; fast multipole algorithm ; impedance boundary condition
電磁散射塗層導體快速多極演算法阻抗邊界條件 -
Advanced nodal green s function method on neumann boundary condition
第二類邊界條件先進格林函數節塊法 -
Global existence and nonexistence for a nonlinear parabolic equation with a nonlinear boundary condition
一類帶非線性邊界條件的非線性拋物方程的解的整體存在性與不存在性 -
Based on the ostwald - de waele equation, the leakage characteristics of power - law transmitted by helical gear pump are researched, and the leakage model of power - law in the clearence is founded, and - the velocity distributing and the leakage capacity are worked out by the boundary condition. the power loss of leakage is got through the clearence leakage capacity, and the friction power loss is attained by the velocity distributing. the mathematic calculation model
利用冪律流體本構方程，首次對聚合物流體在斜齒齒輪泵中的漏流特性進行了研究，建立冪律流體在間隙中的泄漏模型，利用邊界條件求出速度分佈及泄漏量；由間隙泄漏量得到漏流損失功率，由速度分佈得到流體摩擦功率損失，並得到間隙最優解的數值計算數學模型，同時給出實例及數值計算結果。 -
The paper is emphasis on how to simulate the boundary condition of the enrockment near the high steep bank slope
本文就如何模擬高陡岸坡附近堆石體的邊界條件展開工作。 -
The boundary condition at bed surface of diffusion equation of nonuniform sediment is derived based on the concept of exchange intensity of stochastic theory by the author
摘要文中首先給出了由我們建立的床面泥沙交換理論導出的非均勻沙擴散方程的邊界條件。 -
The effect of lateral boundary condition, the river regime and the bed material on lateral erosion are analyzed
結果表明：水庫下游均會有河岸侵蝕發生，但初期一般以下切為主，後期以展寬為主。 -
The study indicate that the surface form has no effect on kl, but has obvious effect on kll, and will affect the breaking angle and mode ; in finite plate, the boundary condition has effect on the sif and the k is bigger than in infinite plate ; the effect of the distance and the angle between cracks are all have obvious effects on the multiple crack interaction, and the interactions between cracks also have obvious effects on the sif, which can be neglect only when the distance is bigger enough
研究表明：裂面狀態對k _的大小沒有影響，而對k _的影響卻很大，相同應力條件下，裂面狀態會影響裂紋的開裂角和開裂方式；有限板的邊界對應力強度因子有一定的影響，其k比無限板中的k略大；裂紋間的距離、夾角等因素對裂紋間的干涉效應均有較大影響，裂紋間的干涉效應對應力強度因子的影響非常顯著，只有當裂紋間的距離充分大時，干涉效應才可忽略。 -
The geometric nonlinear analysis of three types of large - span annular cable truss structures is put forward by using commercial fem program. their static properties in deferent load case are concluded, and some suggestions for actual projects are also presented. base on the prime realization of its static property, parameter analysis of its static property is done consisting of deferent number of truss, deferent height of truss, deferent scale of height of masts, deferent boundary condition and deferent magnitude of pre - stress in deferent load case
本文利用通用有限元軟體ansys對大跨度環形空腹索桁結構體系中三種典型的結構（即內外圈都為圓形、外圈圓形內圈橢圓形、內外圈都為橢圓形的三種外形的結構）進行了幾何非線性分析，總結出各自在不同荷載工況下的靜力性能，並提出一些有實際工程意義的建議。 -
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。
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