field boundary condition 中文意思是什麼
field boundary condition
解釋
電磁場邊界條件-
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。 -
According to differences of construction process, boundary condition, temperature and stress of two schemes extending 3m deep short seam on upstream face in the middle of rcc overflow section and no short seam are calculated, what " s more, in this paper the equivalent line drawing of stable temperature field and unstable temperature field during construction and operation period and the duration curve drawing of typical points " s temperature and stress are plotted, and the results of peak and minimum on temperature in every month and maximum on tensile stress are attained
根據施工過程和邊界條件，對溢流壩段中間上游面增設3m深短縫和不設短縫兩個方案進行了溫度和應力計算，並繪制出穩定溫度場等值線圖及施工期、運行期非穩定溫度場等值線圖，典型點溫度和應力歷時曲線圖，逐月最高、最低溫度和最大拉應力及相應位置等成果。 -
Far field boundary condition
遠場邊界條件 -
But using a floating bulkhead as a door of checkgate is a new concept. because of the complex boundary condition and the fluid - structure interaction, model testing is a very important method of researching in this field
浮箱門在動水中運行時，由於門體和水流的耦合作用和邊界條件的影響，其受力情況極其復雜，研究手段以物理模型試驗為主。 -
The anchoring energy takes the modified rapini - papoular expression, and the planar alignment nlc cell under external magnetic field will be studied. the fundamental formula and the boundary condition of 6 are deduced analytically
錨定能採用修正後的rp公式，用解析的方法詳細研究了外磁場作用下沿面校列向列液晶盒。 -
With the flowchart the program can be divided into six parts and it includes initial flow field, computation of molecular motion, boundary treatment, re - sort of molecular, sample and computation of molecular collision. several cases have been simulated to certify the correctness of the program. dsmc method is improved using method of characteristics to modify the boundary condition and gets the goal as expected
首先，編程實現了基本dsmc方法對二維流動的計算，給出了所用演算法的原理、相關模型，並結合程序結構流程圖，分別介紹了初始化流場、計算分子的運動、邊界的處理、分子的排序、抽樣計算分子的碰撞、流場參數采樣統計各個功能模塊在fsmm2d中的實現，並對該程序進行了算例校驗。 -
Using field transformation ideas and split - field method to solve the difficulty of setting periodic boundary condition when excitation is abnormally incident, and founding time domain function for analysis of fss
採用場變換思想和場分裂方法，建立相應的時域迭代公式，解決了平面波斜入射情況下周期邊界條件設置中的困難。 -
Spectral data of the near field for locating the shape of scatterer with impedance boundary condition
由近場譜數據確定阻抗散射體的形狀 -
As to the tunnels of jinping hydroelectric power station in sicuan province, the thesis discusses how to reasonably consider the initial stress field when designing a large - scale tunnel with high initial stress and deep buried. first, by analyzing of the rock lab tests and discusses the feature of regional geomorphology. explains the production of initial stress field, analyze the initial stress of jinping hydroelectric power station ; second, using the fem, the paper creates the real model of region. according to the results of stress measurement point, by combining of ann and fem to decide the boundary condition, the paper calculates the initial stress field ; at last, the paper analyzes the influence of the initial stress field formed from different condition on the deformation and stress of the surrounding rock, and the main factor to influence the initial stress. on the basis of the former work, the author proposes some proposals, which will be helpful for studying and designing of the similar undergroun d engineering
首先從巖體的應力?變形的特性入手，並結合工程區域的地形地貌特徵，對巖體初始地應力場的形成做出解釋，結合錦屏水電站初始地應力的現狀提出了將地應力場進行分帶；然後建立整個工程區的實體模型，在地質分析的基礎上，以工程區右半部分為代表，參照實測點的初始地應力值，採用了神經網路與有限元相結合的方法反演了該區域的初始地應力場；最後模擬隧洞的開挖，通過計算比較分析了初始地應力場對處于不同應力帶內的隧洞圍巖穩定性的影響，在此基礎上提出了作者的建議，力圖為該類工程的研究設計工作提供有益的幫助。 -
In this paper, the foundamental principles of fd _ bpm ( finite - difference beam propagation method ) used to simulate and calculate the process of beam propagation is first introduced. then ， the theory of boundary condition is carefully presented. based on those theories mentioned above, a new kind of fd _ bpm arithmetic is brought forward. compared with the traditional arithmetic, this one has much more advantages. in virtue of the new arithmetic, author accomplished the whole simulating designs with two kinds of optical splitter ( stright y - junction optical splitter and sine - type optical splitter ), including propagation field simulating, vital parameter calculating, acquired some optimized waveguide parameters ， and finished the template by those results at last
本文主要藉助這種改進的fd _ bpm演算法，對兩種結構的光分路器（直y型光分路器，上升正弦型光分路器）進行了器件設計的軟體模擬，包括對兩種結構光分路器傳輸場進行模擬，並對兩種結構光分路器的重要參數，如波導寬度，分叉角，縱橫比，損耗進行了模擬計算；得到了一些有價值的優化波導結構參數值，根據這些優化值設計製作了光刻模板。 -
As mentioned in above, the boundary condition of ridge waveguide is quite complex, so to solve the field equations directly is very tedious and complicate
鑒于脊波導的廣泛使用，本課題的研究很有實際意義。脊波導的邊界條件比較復雜，直接求解場方程非常冗長、繁瑣。 -
In numerical computation aspect, by implying new computational geometric field, computation error caused by boundary condition was decreased
在數值計算方面，本文採用了新的計算域，減小了由於邊界條件造成的計算誤差。 -
In the paper, in accordance with the thermal power torpedo propulsion system using hap tri - component fuel, with the i - deas software, applying the cad technology and the fem, the research of simulation on the piston - one of key parts of engine was proceeded and the paper presented the whole analysis process of the piston including thermal analysis. in the paper, the question of the boundary condition in the complicated engineering was explored and the temperature field. the stress field and the deformation of the piston were computed and analyzed under a new kind of fuel ( hap )
本文針對三組元魚雷熱動力系統，應用i - deas軟體，利用cad技術和三維有限元方法（ fem ） ，對發動機的關鍵零件? ?活塞展開模擬研究，對活塞進行了包括熱分析在內的全過程的模擬計算，探索了復雜工程中邊界條件的處理問題，分析計算了魚雷發動機活塞在新型燃料（三組元燃料）工作下的穩態溫度場、應力場與變形情況，最後，根據分析結果對其結構提出了改進意見。 -
In addition, corresponding measures of initial condition and boundary condition are presented. to solve fluid problem, differential equations must be discretized in the computational field
為了求解泛定方程，本文在分析模擬對象流動特徵的基礎上，給出了相應的定解條件，包括初始條件和邊界條件。 -
Before reforming the code to be a mhd, the boundary condition of sss code is modified, so that we can calculate the electro - magnetic implosion of ideal conductive liner, where the magnetic field diffusion is neglected
在進行一維磁流體力學改造之前，我們計算了磁壓驅動沒有磁擴散的理想導體內爆算例，主要是對sss程序的壓力脈沖邊界條件進行修改。 -
In the paper, on the basis of expounding the importance of similarity theory in the numerical simulation of tectonic stress field, it is pointed out that, only by making the numerical model be similar to the geological prototype in material, combination pattern, boundary condition, loading mode and cracking criterion, etc., may the simulation result be real
摘要論述了在構造應力場模擬中相似性原理的重要性，指出地質原形與數值模型在材料、組合形式、邊界條件、受力方式和破裂準則等方面必須相似，模擬的結果才具有真實性。 -
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。 -
Based on thomas - fermi theory, the effect of external electric field on atomic inner boundary potential was studied. the new atomic potential boundary condition with the influence of external electric field was established and the atomic energy and pressure were calculated with new boundary condition. the local effect of solute element under an electric field was analyzed with the electron shield model
在理論上，基於thomas - fermi理論，重點研究了電場作用對原子體系的內勢場邊界的影響，建立了外場作用下的原子勢場外邊界條件，並計算原子能量和壓強；基於電子屏蔽模型，分析了電場作用下溶質行為的局域效應。 -
Based on thomas - fermi equation and analysis in the influence of electric field on inner potential field, boundary condition of inner potential field of thomas - fermi equation influenced by electric field was established for the first time. and it was concluded that with elevation of intensity of electric field, the influence of positive electric field on energy of atom is increased ; the influence of negative electric field on energy of atom is decreased firstly, then increased
基於thomas ? fermi方程，通過分析電場對原子內勢場的影響，首次建立電場作用下的tf方程的內勢場邊界條件，確定了原子的能量在正電場作用下隨著勢場強度升高而增加，在負電場作用下呈先降低后升高的趨勢。
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