eigenmode 中文意思是什麼

eigenmode 解釋
固有模式
  1. Around 40 ; the neutral curve obtained by the growth rates of the temperature fluctuation has a ringlike curve separated from the main branch of nachtsheim s calculation by velocity fluctuation at the lower grashof number side ; and its phase velocity is close to the maximum mean velocity where the critical layer of the eigenmode locates. the thermal fluctuation decays rapidly as the nondimensional frequency above 0. 4, so that it means that the coupling effect between instability wave generated by buoyancy fluctuation and velocity waves by invicid instability seems weak enough for their critical layers in the range of the nondimensional frequency

    詳細研究了自然對流邊界層中最早失穩的浮力振型的功率譜波長波速與臨界層位置等基本特徵和它為主導其他振型尚未失穩時按線性理論得到的3種相互獨立振型的振幅分佈。系統地測量了它所對應的溫度和速度漲落的振幅增長規律和中性曲線，實驗結果表明，溫度漲落的中性曲線在低格拉斯霍夫grashof數
  2. The instability in the natural convection boundary layer initiates with the buoyancy eigenmode and develops into non - linear stage with the turbulization of the buoyancy eigenmode. in the mean time, the invisid eigenmode at the inflexion point appears and begins to increase at the outer layer. experimental results show that the turbulent layer near the maximum velocity point can be detected while the reformed grashof number

    自然對流邊界層的穩定性由浮力振型失穩開始，並隨著浮力振型的湍流化進入非線性階段，與此同時，無粘性振型在外層開始失穩。實驗結果表明，修正格拉斯霍夫數grashof
  3. The correlations between wind stress anomaly over the tropical pacific and ssta using svd analysis shows that the wind stress patterns are corresponding to enso eigenmode. it is suggestive that the explanation, simulation and prediction of el nino / la nina evolution in space - time should not be based on a single eigenmode but on their interaction, with emphasis on the fact that superimposition and phase locking are important factors of the event cycle

    對緯向、經向風應力距平與ssta做svd分析赤道太平洋地區風應力異常和海表溫度異常之間的相關關系顯示，經pop分析得到的緯向、經向風應力的空間型與elnino lanina時的ssta具有很好的對應關系。
  4. Buoyancy instability ; neutral curve ; vortex wave ; eigenmode

    浮力不穩定性中性曲線渦量波特徵振型
  5. Abstract : by employing the concept of photon flux, the evolution of the phase and photon flux in the eigenmode state in three - wave mixing, and the requirements for the initial phase and photon flux in this state, are studied in the paper. a special state in which there are only exchanges of the photon flux but no phase variations in the three - wave mixing process is investigated. an all - optical switch based on the eigenmode pushpull nonlinear - optical - mirror is presented, and the properties of this all - optical switch are numerically calculated. the numerical results show that the performance stability is extremely good, and the intensity and phase of the output signal beams can be easily realized and controlled

    文摘:利用光子流概念研究了三波混頻中本徵模狀態的相位和光子流的變化，以及該狀態對光波的初始相位和初始光子流的要求，研究了三波混頻中只有光子流的交換卻沒有相位變化的特殊狀態，提出了本徵模狀態推拉式非線性光環鏡的全光開關，並數值計算了這種全光開關的性能，數值結果表明，該光開關的性能穩定性好，並且易於實現和控制輸出信號光的光強及相位
  6. This paper lays emphasis on the problem of extracting the isolated eigenmode in spectrum and the iteration accelerating

    本文重點研究eigenmode模塊演算法如何實現對頻譜中孤立本徵模的萃取及其中遇到的加速迭代的問題。
  7. First of all, the algorithm base on the boundary problem of helmholtz equation and finite - difference technique, calculate the field in “ cold ” cavity and disperse the helmholtz equation, as a result of the formula : ax = x. secondly, according to the eigenvalue of matrix theory and applied iterative methods, eigenmode adopt a numerical approach which allows the improved chebyshev polynomial iteration which based on the power method to extract the isolated eigenmode in the spectrum. finally, we resolve the problem of compatibility in software and insert the eigenmode module into the chipic which will have the function of eigenmode analysis

    具體的說: （ 1 ）首先以電磁理論中的亥姆霍茲方程的邊值問題理論和計算電磁學中的有限差分法為基礎，計算冷腔中的場分佈並離散亥姆霍茲方程，得到標準的本徵值問題: ax = x ; （ 2 ）然後根據矩陣理論中的eigenvalue問題和數值計算中的迭代方法，採用改進后的chebyshev多項式，在power迭代法的基礎上對ax = x進行多項式迭代，實現對頻譜中孤立本徵模的萃取; （ 3 ）最後將用fortran語言編制的eigenmode模塊加入到chipic軟體中，解決了eigenmode模塊與chipic主代碼的兼容問題，從而實現了chipic軟體的模式分析功能。
  8. In the end of this paper we exam the capability of eigenmode in two kinds of physical model, the testing result shows that the capability of eigenmode, which compare with the function of magic and cst, accord with the practice and what we

    本文最後用兩種物理器件模型對eigenmode模塊進行性能測試，並與常用電磁粒子模擬軟體magic和ansoft公司的cst做比較，其測試結果基本符合實際要求。
  9. It is very important to the electromagnetic simulations. this paper base on the theory and method of electromagnetic calculation and fdtd, associate with the particle simulation technology, develop an algorithm to resolve the problem of the eigenmode analysis of the cold - cavity in practice

    本文從分析電磁場計算的基本原理和方法出發，立足於時域有限差分法，結合計算機粒子模擬技術和數值計算原理，開發出一種能夠分析計算高功率微波器件冷腔諧振頻率以及本徵模式的演算法。
  10. For the coupling between the laser diode and the tapered single - mode fiber, the overlap integral is used to compute the coupling efficiency on the basis that the laser diode outputting mode field and the fiber eigenmode field is approximated to basic - mode gauss field. and based on the same approximation, the coupling efficiency between the semi - tapered fiber and the laser diode is calculated by using the ray - traced method. the parameters are analyzed for the effect on the coupling efficiency and give the theory foundation to optimize the design of the tapered fiber coupling system

    首先通過對半導體激光器輸出模式場和光纖本徵模式場的高斯基模近似，利用交疊積分計算了錐形單模光纖與激光器的耦合效率問題；其次依據以上近似，利用光線跡蹤法計算了半錐形多模光纖與激光器的耦合效率問題，給出各個參數對耦合效率的影響和作用，為優化設計錐形光纖耦合系統提供了理論依據。
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