cavity model 中文意思是什麼

cavity model 解釋
空泡流圖
  • cavity : n. 1. 【解剖學】穴，窩，盂，腔，空腔；【醫學】（空）洞。2. 【物理學】模槽；氣蝕區；空腔諧振器；【原子能】（反應堆中的）小室，暗盒。
  • model : n 1 模型，雛型；原型；設計圖；模範；（畫家、雕刻家的）模特兒；樣板。2 典型，模範。3 （女服裝店僱...
  1. The model is tested by a typical die - cavity roughing, and shortening machining time and balancing cutting - load can be attained

    通過典型模具型腔的粗加工試驗驗證，證明該進給率優化策略不僅可以縮短加工時間，而且可以使加工載荷均勻。
  2. For micro - cavity semiconductor laser, station model is proposed in this paper and its steady - state and instantaneous characteristics when the coupling efficiency of spontaneous emission into a lasing mode is equal to 1 are analysised. for current noise, sp noise, noise, p noise, as well as current modulation, sp modulation, modulation and p modulation, using small - signal approximation, we derive the laser ' s corresponding transfer functions. and we calculate their signal - to - noise ratio ( snr ) gain in various parameters through frequency domain analysis in the premiss of large input snr

    本文對于微腔半導體激光器，提出站模型，能夠較直觀簡潔地分析微腔半導體激光器的穩態和瞬態特性，利用此模型對具有重要實用價值的= 1的微腔半導體激光器進行了討論；對于電流i噪聲、自發發射壽命_ （ sp ）噪聲、自發發射因子噪聲、光子壽命_ p噪聲，以及電流調制、 _ （ sp ）調制、調制、 _ p調制，在小信號近似下，得到了相應的激光器的傳遞函數；在大信噪比的前提下，對激光器進行了頻域分析，分別計算了它們在不同參數下的信噪比增益，分析了其抗噪聲性能。
  3. By comparing the results with relative experiment data, it is shown that rng k - is more exactly than the other turbulent model. 2 ) the influences of axial inflow position, radial outflow size, rotating reynold number, non - dimensional mass flowrate and axial inflow angle on the flow and heat transfer characteristics were numerically investigated for a typical rotator - stator cavity with axial inflow, radial inflow and radial outflow. the correlations for average nusselt number vs rotating reynold number or non - dimensional mass flowrate were established

    （ 2 ）針對一典型的徑向、軸向進氣，徑向出氣的轉-靜盤腔結構，系統研究軸向進氣位置、徑向出口大小、旋轉雷諾數、無量綱質量流量和軸向垂直預旋進氣等對盤腔內流動和換熱的影響，整理出轉-靜盤腔內轉盤平均努謝爾數與旋轉雷諾數無量綱質量流量之間的準則關聯式。
  4. Abstract : the distribution of cooling air which is in the grille - brick of the inner combustion hot air stove has been simulated with three dimension turbulent mathematical model so as to find a method which is used to improve the distribution of cooling air in hot air stove. the influence of differential horizontal plates on the distribution of cooling air is discussed. the results show that original big circle round field of flow in the pillar - cavity is changed into full one - way field of flow and edges gas flow, at the same time, is increased by horizontal plates. there is a different function with horizontal plates and vertical plates. to make the uniform distribution of cooling air in the hot air stove, it is necessary that horizontal plates and vertical plates are used in a combined way

    文摘:應用紊流三維數學模型模擬內燃式熱風爐內冷風在格子磚柱中的分佈，尋求改善其分佈的途徑.討論了加設不同布置的水平導流板對氣流分佈的影響.模擬結果表明，在支柱空腔內加設水平導流板改變了原有大迴旋流場，使迴旋流變成大面積的單向流.通過在支柱空腔內加設水平導流板可以發展邊緣氣流，這恰好與加設豎直導流板的作用相反，水平導流板和豎直導流板的結合使用有望實現冷風在格子磚柱中的均勻分佈
  5. Realization of a spin - type multi - model cavity - field entangled states via atomic interference method

    利用原子干涉方法實現多模腔場的類自旋糾纏態
  6. It is derived the hamiltonian for the interaction of a - type three - level atom with a two - mode quantum cavity field from the general interaction hamiltonian between a multi - level atom and a multi - mode radiation field, and reduce it into an effective two - mode raman - coupled mode under large detuning condition. it is proposed a modified effective hamiltonian for the two - mode raman - coupled model. it is found the time - dependent state vectors and present validity conditions for the involved interaction hamiltonians. it is shown that in the study of the two - mode raman - coupled model it is not enough to retain only the usually used effective hamiltonian, one must also take into account the ac stark shift of the atomic levels ( at least one of the levels ). finally, it is studied the atomic dynamics in the interaction of a - type three - level atom with a two - mode quantum cavity field and in the two - mode raman - coupled model. it is found that the number of collapse - revivals, the collapse time and the revival time show new characteristics

    從多能級原子與多模光場的相互作用哈密頓量出發，導出了型三能級原子與雙模光場的相互作用哈密頓量.在大失諧條件下將其化成等效的二能級形式雙模喇曼耦合模型.提出了該模型的一個改進型等效哈密頓量.該哈密頓量由兩部分構成：一部為通常所謂的等效哈密頓量，另一部分描述原子能級的動態斯塔克移動.研究表明，在雙模喇曼耦合模型的研究中，只考慮前者是不夠的，還必須考慮後者.最後，我們研究了該系統中原子的動力學行為，發現崩塌-復甦的數目、崩塌時間和復甦時間均呈現新的特性
  7. Abstract : reviewed are five methods for the analysis of the penetration of jacked - in piles, namely, cavity expansion method, strain path method finite element method, slip line method and calibration model test. after analysis, it is pointed out that it is more rational to adopt sub - statical spatial axisy numerical formulas based on traditional plane - strain cavity expansion method in the analysis. after spatial closed - form solutions are obtained for soil movements, stresses and initial excessive pore pressures generated durihy pile penetration are found out. it is suggested that finite element analysis together with centrifugal model test be used in verifying the results

    文摘:在分析飽和粘土中靜壓樁的貫入機理的基礎上，對靜壓樁沉樁分析的圓孔擴張理論、應變路徑法、有限元分析、滑移線理論和模型槽試驗等五種方法逐一進行評述，並提出在傳統的平面圓孔擴張理論基礎上加以改進，採用準靜態空間軸對稱方程組對靜壓樁貫入過程進行模擬，從而得出土體位移、應力、初始超孔壓的空間解析解，同時採用有限元分析、模型槽試驗相互印證的研究方法
  8. Development study on model wy multi - functional thoracic cavity closed drainage system

    自發性氣胸行胸腔閉式引流術后最適宜拔管時間的探討
  9. And then, the cavity flow is simulated, and the streamline and pressure contour at different reynolds number are plotted, the stream function and location of vortex centers are agree well with the previous results, which indicate the incompressible lattice bgk model is reliable

    進而對方腔流的速度場和壓力場進行了計算，繪制了不同雷諾數下的流線圖及壓力等高線圖，得到的迴流渦的位置和流函數的值和現有的數據十分吻合，表明本文不可壓格子模型是可靠的。
  10. Measurement of the field distribution in a cold model of rfq resonant cavity

    加速器腔體電場分佈的冷模測量
  11. The optical feedback self - mixing model is studied when the external cavity of a semiconductor laser suffers a harmonic vibration

    摘要在外腔簡諧振動條件下，研究半導體激光器的光反饋自混合干涉系統模型中的測量參數。
  12. Hot runner benefit is delivered at pressure, model can be overcome on certain level the hollow that be not worth as a result of filling makings and forms, shrinkage cavity, be out of shape wait for blemish

    熱澆口利於壓力傳遞，在一定程度上能克服塑件由於補料不足而形成的凹陷、縮孔、變形等缺陷。
  13. In this paper, micro - cavity semiconductor laser ( mcsl ) with pillar vertical - cavity surface - emitting structure ( vcsel ) which has potential applications in optical communication and optical interconnect is theoretically analyzed, the calculation model that used to discuss the modal performance of rectangular columnar and cylinder vcsel with oxidized aperture is established by using vector field model. the numerical simulations in the case of cylinder structure show oscillating wavelength and threshold gain against inside and outside radius of laser, the layer refractive index and pair number of bragg mirror, thickness, position and oxidized material ' s refractive index of oxidized aperture, in detail. more practically, considering dos shell of laser as non - perfect one, or supposing that dos shell is separated from the laser, we can obtain more significative results

    本工作以矢量場模型出發，對具有誘人應用前景的柱形垂直腔面發射結構（ vcsel ）的微腔半導體激光器（ mcsl ）進行了理論分析，建立了用於分析方柱形和圓柱形結構具有氧化孔徑層的激光器的模式特性的理論模型；對圓柱形結構情況進行了數值模擬，得到了振蕩波長、閾值增益隨激光器內外半徑、 bragg反射鏡層折射率、周期數以及氧化孔徑層厚度、位置和氧化物折射率的詳細變化規律；為使理論計算更接近實際，將外加金屬包殼視為非理想導體，或將金屬包殼與激光器結構隔開，分別對這兩種情況下的結果進行了討論。
  14. The dissertation focuses on seismic wavefield forward modeling and migration for the fractured reservoir. the paper integrates and researches the wavefield extrapolation operator for lateral variation of velocity, analysis of the wavefield characteristic, forward modeling and depth migration of prestack and poststack seismic wavefield, creation of wavelet, design of the model with fracture and cavity, and computation of reflectivity

    本文圍繞縫洞儲層地震波場正演與偏移問題，對橫向變速波場延拓運算元；疊前與疊后正演模擬；疊前與疊后深度偏移；子波的生成；縫洞模型的設計、反射系數的求取、正演、偏移及其波場特徵分析進行了一體化研究。
  15. The main work embodied as follows. ( 1 ) model a biowhig / suction type boundary for synthetic jet actuator, it considers the actuator cavity, exit nozzle and exterior flow field as a single computational region

    （ 2 ）本文的主要工作之一是基於建立的激勵器簡化模型對合成射流流場進行二維、三維數值分析以探討合成射流流動機理。
  16. The main work in this paper includes three parts : the theory research on partially - cavitating and super - cavitating axisymmetric bodies, the numerical computations and experimental investigations on partially - cavitation and super - cavitation on axisymmetric bodies. after finishing the study of theory and experiment on the partially - cavitation and super - cavitation for axisymmetric body, i use the potential flow theory to build the mathematical model on the partially - cavitation and super - cavitation for axisymmetric body. many cavity wake models, such as pressure recovery close model, riabouchinsky model and re - entrant jet model, are studied seriously

    本文在深入研究了回轉體局部空化與超空化理論及實驗結果的基礎上，基於勢流理論，建立了回轉體局部空泡和超空泡流場的基本數學模型，通過對kinnas和fine 、 uhlman以及jiedang和gertkuiper等人基於二維水翼提出的壓力恢復閉合模型、鏡像板模型和回射流模型等空泡尾流模型進行了逐一的研究分析，發現其中的壓力恢復閉合模型較適用於模擬回轉體空泡尾部流場，並選用此空泡尾流模型作為求解回轉體空化流場正問題與逆問題的數學模型的組成部分。
  17. Then this model is chose to compute the cavitating problem. the panel method employs sources to solve the problem of partially - cavitation and super - cavitation for axisymmetric body. the sources are distributed on the bodies and cavity surfaces

    通過在回轉體表面和空泡表面分佈源匯的方法，建立了求解回轉體局部空泡與超空泡流場的數值方法。
  18. According to the problem of failure and instability in roadbed and cutting engineering of underground karat cavity, on the basis of inhomogeneous elastic damage model, this thesis propose the fem back - analysis from instability - strength degradation, to describe inhomogeneity of material suppose that the material parameter obeys statistical distribution

    摘要針對地下溶洞路床路塹工程變形與失穩問題，本文提出了基於非均質彈性損傷模型的有限元失穩強度折減反分析法，認為材料參數服從統計分佈來描述材料的非均勻性。
  19. The equivalent cavity model is used to deduce the threshold condition of the ecld, and the expression of the threshold carrier density n ( v ) when ecld is tuned to oscillate at different frequencies has been obtained. using the expression of n ( v ) and the carrier dependent refractive index, the simple basic equation describing the bistable characteristics has been derived after choosing an appropriate reference frequency nf

    通過建立等效腔模型來推導外腔半導體激光器的閾值條件，得到ecld在不同頻率v振蕩所需的閾值載流子密度n （ v ）表達式，利用該表達式及相關的折射率表達式，在選擇合適的參考載流子密度n _ f后，導出了一個描述雙穩所需的基本方程。
  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。
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