有限差分網格 的英文怎麼說

中文拼音 [yǒuxiànchāfēnwǎnggé]
有限差分網格 英文
finite difference grid
  • 有 : 有副詞[書面語] （表示整數之外再加零數）: 30 有 5 thirty-five; 10 有 5年 fifteen years
  • 限 : Ⅰ名詞（指定的范圍; 限度） limit; bounds Ⅱ動詞（指定范圍, 不許超過） set a limit; limit; restrict
  • 差 : 差Ⅰ名詞1 （不相同; 不相合） difference; dissimilarity 2 （差錯） mistake 3 [數學] （差數） differ...
  • 分 : 分Ⅰ名詞1. （成分） component 2. （職責和權利的限度） what is within one's duty or rights Ⅱ同 「份」Ⅲ動詞[書面語] （料想） judge
  • 網 : Ⅰ名詞1 （捕魚捉鳥的器具） net 2 （像網的東西） thing which looks like a net 3 （像網一樣的組織或...
  • 格 : 格象聲詞rattle; gurgle
  • 有限 : limited; restricted; finite; a little; not much
  • 網格 : cancellus
  1. Second, go deep into investigate the frame and calculate method of real options, apply formulation of gesk, black - scholes carr and margrabe to a instance, and compare the results of different formulations. make use of binominal lattice ^ finite difference and monte carlo to one instance. this paper suggests that the operable procedure and method copeland and antikarov provided with monte carlo simulation and binominal lattice is a best way

    第二，深入分析實物期權應用框架和計算方法，利用gesk公式、 black - scholes公式、 carr公式和margrabe公式對具體的實例進行了計算比較，又採用二項網格法、有限差分方法和蒙特卡羅方法對實例進行了模擬計算。
  2. A highly efficient numerical algorithm by using multi - grid method ( mgm ) is introduced to solve the three dimensional field distribution in the present paper. formulae of the restriction and prolongation in mgm computation is deduced, and a 3d program of mgm is accomplished, which can solve the field distributions in electron optical systems for various electrostatic lenses. the 3d field distribution in an electrostatic concentric spherical model is tested with mgm algorithm and an algorithm based on finite difference method ( fdm ) respectively. comparing these two results in view of computational efficiency and computational accuracy, it appears that mgm is superior to fdm in solving electrostatic field distribution for the electron optics problem. this paper shows that the 3d field computation using mgm greatly improves the computational efficiency of field distributions in electron optical systems and shortens the computational time

    本文將一種高效率的數值計算方法? ?多重網格法引入三維靜電場分佈的計算，多重網格法利用限制和延拓可迅速求得滿足精度要求的場分佈.研究了求解各種靜電透鏡電子光學系統三維場分佈的多重網格法程序，驗算了靜電同心球模型的三維場分佈.通過與目前在場計算中常用的有限差分法進行比較，可以看出多重網格法的計算效率和計算精度優于有限差分法.本文表明利用多重網格法計算三維場大大提高了場分佈的計算效率，縮短了計算時間，因此為后續計算打下了良好的基礎
  3. On the basis of experimental research, this thesis applies 2 - dimensional non - linear finite element method to the analysis of transient temperature field on the section by means of relatively high precision triangular element of six joints. when the temperature field is analyzed, finite element reseaus are divided in space field and finite difference reseaus are divided in time field, and then the program is compiled. the computing results are in good agreement with the test data

    在試驗研究的基礎上，本文採用精度較高的三角形六結點單元對構件截面二維非線性瞬態溫度場進行了有限元分析，即在空間域內採用有限元網格劃分，在時間域內採用有限差分網格劃分，據此編制了計算程序，計算結果與試驗數據符合較好，程序穩定性好，精度滿足要求。
  4. A normal transform is introduced, and there are enough much grids in the region between the critical layer and the wall, where the variation of the disturbance is the quickest. the finite - difference of governing equations with fourth - order accuracy in the normal direction is utilized in full regions including points close the wall, and is very important for accurately discreting equations. the combination of global and local methods is implemented, and a new iterative formula is derived

    對于曲線坐標系下的拋物化穩定性方程，文中發展了求解的高效數值方法:引進法向變換，使得在臨界層與壁面之間的擾動量變化最快的區域有更多的法向網格點;導出包含邊界鄰域在內的完全四階精度的法向有限差分格式，這對方程精確離散至關重要;採用全局法和局部法相結合的方法及其新的迭代公式，大大加速收斂並得到更精確的特徵值。
  5. Abstract : incompatible element nh11 and hybrid stress element 18 were employed to analyze rock burst occurring in coal face 9108 of sanhejian coal mine. compared with the results from ansys, the two optimized fems can execute more accurate numerical simulation in the research of rock burst as well as other rock problems and lessen the errors from inaedquately meshing in huge calculations due to the limitation of labor and computer time. in addition, the criterion of averaged generalized stress rate was proposed and used to determine the site and moment of rock burst. the given conclusion is in accordance with the face of coal face 9108 very well

    文摘:利用優化非協調元和雜交元分析了三河尖礦沖擊礦壓，並與ansys程序的計算結果進行了比較.認為優化有限元在沖擊礦壓乃至巖石材料的數值模擬中能給出更為精確的結果，也可減小大型計算中由於人力、機時所限粗分網格產生的誤差.分析中，採用了廣義平均應力率準則來判斷沖擊點位置和沖擊時刻，所得結論與實際情況吻合
  6. When the solutions of examples are achieved, the superiorities of the method is embodied which are big pace and good stability even when net meter ratio is bigger than 1, which is a greatly breakthrough in the limit of stabilization in the finity difference method ago

    在具體的算例計算中體現了辛差分方法的優越性：步長大，在網格比大於1時仍具有較好的穩定性，大大地突破了以往的有限差分方法穩定條件的局限。
  7. This dissertation is mainly about the transit radiation of the electron beam passing through the gap with the random standing wave electric field. in order to satisfy the requirement of the task, the feasibility of generation of more than 1 gw high power microwave in x - band using the transit radiation oscillator based on the transit effect is studied

    研究了二維柱坐標系網格劃分演算法，並用此演算法對五腔開放腔進行網格劃分，採用時域有限差分與快速傅里葉變換相結合的方法計算了五腔開放腔/ 6 、 2 / 6 、 3 / 6 、 4 / 6 、 5 / 6模這五個模式的頻率和場分佈。
  8. Three finite - difference methods, i. e., stagger grid, implicit and explicit algorithms, are analyzed in detail. multi - grid algorithm is firstly introduced in elastic wave simulation, to solve for the stability problem inherent in stagger grid and implicit algorithm, also for the efficiency problem inherent in explicit algorithm, and the precision, stability and efficiency for simulation of elastic wave arc increased by multi - grid method. phase - delay method is provided to effectively absorb boundary reflection and increase efficiency for wave motion simulation, based on phase delay and amplitude decaying features along wave propagation

    在水平分層介質接收函數的波形反演研究的基礎上，本文系統闡述了非均勻介質中彈性波傳播數值模擬常用的三種有限差分方法：顯式差分、隱式差分和交錯網格法，首次將多重網格演算法應用於彈性波方程的數值模擬問題，克服了交錯網格法和顯式差分法穩定性差，以及隱式差分法計算效率低的缺點，大大提高了彈性波數值模擬的精度、穩定性和計算效率。
  9. A new finite - difference method is developed for seismic modeling and reverse - time migration based upon the voronoi cell construction on irregular grids. curved velocity boundaries and irregular earth surface can be accurately represented using the irregular grid implementation. therefore the modeled and migrated results can be more accurate, and meanwhile, the efficiency is still preserved using an explicit finite - difference scheme

    本文的方法可以實現任意非規則網格上的顯式差分計算，因此該方法在保持了傳統的矩形網格差分演算法簡單、高效特點的同時，又能精確地描述彎曲界面和起伏地表，提高了有限差分地震模擬和偏移結果的精度。
  10. The details of the construction and characteristics of the new finite - difference scheme are presented in this thesis, by using both the integration theorem and the taylor expansion theory. it is proved that the new approach has the second - order accuracy on the grids with axis - symmetric voronoi cells and at least has the first - order accuracy in general. according to this character of the scheme and the computational requirements of the finite - difference approach, a striping procedure is involved to decompose the velocity model into variable spatial size grids with a nearly constant tune step preserved

    本文從積分定理和taylor展開兩個角度，詳細分析了基於voronoicell的非規則網格有限差分演算法的構造過程及性質，並且在理論上證明了本文的差分方法的精度與網格形狀的關系：當voronoicell為關于節點的軸對稱圖形時，本文差分方法具有二階精度；在一般的網格上，則至少具有一階精度。
  11. In this paper, a model of debris flow is calculated by using the finite nodes method with triangle cells. the method is combined with fdm and fem. vast applications proved that it can suit for complex boundary as fem and is efficient as fdm

    這種方法將有限元的思想與有限差分的方法結合起來，吸收了有限元方法中三角網格模擬邊界條件符合實際情況的優點，又具有差分方法計算量小的特點，方法的適用性經過了大量工程實踐的檢驗。
  12. Finite difference method can deal with regular boundary conditions. in this paper, we discrete the water domain into rectangular meshes, and simulate the propagation, reflection and diffraction of water waves. we just specify waves source, the movement of water waves can be simulated automatically

    有限差分方法能夠處理具有規則邊界水域的水流現象，在本文中，我們把求解的水域離散成結構矩形網格，對水流的折射、反射、繞射等水流現象進行了動畫模擬，我們僅僅指定產生水流動畫的波源，水流動畫的細節均由數值方法產生，不需要人工的干預。
  13. Finite volume method can deal with irregular boundary conditions. in this paper, we discrete the water domain into triangular meshes, and simulate dam breaking, water droplets. the same as finite difference method, we just specify waves source, the movement of water waves can be simulated automatically

    有限體積方法能夠處理具有不規則邊界水域的水流現象，在本文中，我們把求解的水域離散成無結構三角形網格，對潰壩問題、雨景等水流現象進行了模擬，和有限差分方法一樣，我們僅僅指定產生水流動畫的波源，水流動畫的細節均由數值方法產生，不需要人工的干預。
  14. Auto dissection of entity with grid for fdtd electromagnetic simulation

    時域有限差分電磁模擬的網格自動剖分
  15. Fdtd method ; subcell technique ; round contour integration method ; conducting thin - wire

    時域有限差分法亞網格技術圓形積分迴路法細導線
  16. In this model, the operator splitting technique, staggered grid technique and finite difference method were used

    採用運算元分裂法、交錯網格法、有限差分法進行計算。
  17. The round contour integration method is proposed to accurately simulate the currents on conducting thin - wire by using the subsell technique in the finite difference time domain fdtd method

    提出了在時域有限差分fdtd方法中應用亞網格技術精確模擬細導線上電流的改進方法圓形積分迴路法。
  18. In this paper, the finite difference method is used to solve the diffusion equation and the spherical particle is discretized with iso - spacing grids and iso - volumetric grids respectively

    採用有限差分法數值求解擴散方程，分別利用等距網格和等體積網格劃分計算區域。
  19. A finite difference scheme for miscible displacement flow in porous media on grids with local refinement in time and space

    多孔介質中混溶驅動問題的時空局部網格加密有限差分格式
  20. On perturation theory resonant cavity model is built by fdtd dividing grids of resonant cavity space and solving them. on the base of the model, electromagnetic fields distribution inside and outside of resonant cavity, also noload resonance frequency and cover material ’ s influences on measurement precision are analyzed

    提出了一種基於同軸諧振腔微擾原理的諧振微波傳感模型，從諧振腔微擾原理出發，利用時域有限差分法（ fdtd ）對諧振腔空間進行網格劃分並求解，建立了諧振腔傳感模型。
分享友人
分享到 Line

分享到臉書