龍格 的英文怎麼說

中文拼音 [lónggé]
龍格 英文
range
  • 龍 : Ⅰ名詞1 [動物學] （古代傳說中的神異動物） dragon2 （古代巨大的爬行動物） a huge extinct reptile:恐...
  • 格 : 格象聲詞rattle; gurgle
  1. Compared with octree data structure, the omni - tree data structure could reduce the meshes " total numbers and get better mesh quality. this paper uses cell - centered finite volume spatial discretization and four - stage runge - kutta time - stepping scheme with some convergence acceleration techniques such as local time stepping and enthalpy damping

    在流場計算中，本文採用格心格式的有限體積法用二階中心差分對歐拉方程作空間離散，用四步龍格庫塔方法作顯式時間推進。
  2. In this paper, the upwind scheme and the central scheme are presented for solving 3 - d n - s equations using the cell - center finite volume spatial discretization and four - stage runge - kutta time stepping scheme, with standard convergence acceleration techniques such as local time stepping and implicit residual smoothing

    在n - s方程的數值計算上，採用了中心差分格式和迎風格式，用格心格式的有限體積法進行了空間離散，用四步龍格?庫塔法作顯式時間推進，並採用了當地時間步長和隱式殘差光順等加速收斂措施。
  3. The calculated drafts covers the whole possible ship draft in the large amplitude motion ; secondly, the research creates and solves the ship large amplitude motion equations. on the one hand, the actual calculation takes into account the coupling between the different motion modes, on the other hand, in the process of calculation of the ship hydrodynamic coefficient, it considers the influence of the nonlinear factor. the hydrodynamic coefficient used in the calculation of froude - krylov force, diffraction force and radiation force changes instantaneously following the draft, and the hydrostatic buoyancy is computed very accurately for the instantaneous immerse hull

    本文的研究分為二個部分：首先利用frank源匯法計算水動力系數，計算包括不同吃水時的附加質量和阻尼系數，吃水范圍涵蓋了船舶大幅度運動時所有可能的吃水；然後建立和求解船舶大幅度運動方程，在實際計算時一方面考慮了運動模態之間的耦合，另一方面在計算水動力時，考慮了非線性因素的影響。 froude - krylov力、輻射力、繞射力中的水動力系數隨吃水瞬時變化，靜浮力的計算精確到船體瞬時濕表面積，最後用四階龍格?庫塔方法在時域內求解船舶運動方程，並進行了載荷計算。
  4. 2 ) the coupled - mode equation analyzing the characteristics of fiber grating is deduced step by step. two methods - the transfer matrix metod and the runge - kuttar method are compared, which are often used to solve the coupled - mode equation

    2 ）詳細推導用於分析光纖光柵特性的耦合模方程，重點對兩種解耦合模方程的方法進行比較：龍格-庫塔法和傳輸矩陣法。
  5. In order to resolve the question, in the thesis a simulation arithmetic of hydro - electrical system is put up. the equations of hydro - electrical system are divided to two parts, one of which consists of the differential equations of conduit system, hydro turbine and generator ' s rotator and is solved by characteristic equation arithmetic, the other of which consists of the differential equations of generator, magnetic system and grid and is solved by longge - kuta arithmetic or covert integrated arithmetic. through the alternative solving of the two parts, the simulation results of the large - disturbance transient could be abstained eventually

    為解決這一問題，本文提出了一種將水力系統和電力系統方程交替求解的水電系統聯合模擬演算法，即將包括輸水系統、水輪機以及機組轉子等部分的水力系統差分方程作為一部分，將包括同步發電機、勵磁系統以及電網等部分的電力系統微分方程或差分方程作為另一鄭州大學工學碩士論文部分，對前一部分採用特徵線法求解，對后一部分根據模型形式採用龍格一庫塔法或隱式積分法等演算法求解，這兩部分的求解過程交替進行，最終即可得到水電系統大擾動過程的模擬結果。
  6. Based on the hydrodynamic, by using momentum theory to the liquid in the flow channel, the computational formula of the air exciting - vibration force is acquired. by using four - step runge - kutta method, the periodic response results of the elastic rotor system with one single - disc are gained. then the dynamic characteristics of the rotor system at the certain rotate speed and the certain physic parameter of system are analyzed by using the phase spaces and poincare maps of this system

    基於流體動力學，通過對葉片流道內的流體模型應用動量定理，得到此汽流激振力模型，並採用四階龍格庫塔法，得出了單盤彈性轉子系統的周期響應規律，然後根據系統的相軌跡及poincare映射圖，分析了系統在特定轉速及特定的轉子系統參數下的運動特徵。
  7. Equidistant interpolation can give rise to convergence difficulties when the number of interpolation points becomes large. this difficulty is often referred to as runge ' s phenomenon

    等距點插值會帶來收斂困難當插值點數量增加。這一困難被稱為龍格現象。
  8. This paper is developed a algorithm to generate airplane ' s 4d approach trajectory, by using fourth order runge - kutta, based on a set of point mass equations of motion, pilot procedure and air traffic control procedure

    本論文是基於飛機質心運動方程組，結合飛行操作程序和空管管製程序，根據飛機的空氣動力學模型、推力模型和實時的大氣氣象模型，用四階龍格? ?庫塔積分法規劃出飛機下降進近4d軌跡。
  9. The paper makes out the calculating program of the surges in throttled., simple and differential surge tanks with the method of runge - kutta, fortran 90 and the basic formulation of surge tank on the visual fortran background compiler. 4

    在windows環境下，使用visualfortran編譯平臺，從調壓室的基本方程出發，採用四階龍格庫塔方法，用fortran90語言編制了阻抗式、簡單式及差動式調壓室的水位波動計算程序。
  10. But the nnd algorithm can " t reach 2 - order precision, and the cell - centred finite volume algorithm is not suit to solve hypersonic problem. for the efficiency of the four - stage runge - kutta time - stepping scheme is low, and the robust is bad for the hypersonic problem, an implicit time - stepping scheme is adopted. this scheme can preserve the results precision and improve the computing efficiency sharply, and is an innovation for the time - stepping scheme of unstructured grid

    為了解決目前傳統四步龍格一庫塔時間推進效率較低、計算高超聲速流場時魯棒性較差的問題，本文改進並採用了一種隱式時間推進格式，能夠在保證精度要求的情況下有效的提高流場計算時的計算效率，對基於非結構網格的時間推進格式有了發展和創新。
  11. The paper also elaborates on the calculating method, the runge - kutta method and the grads method

    論文對模型的演算法? ?龍格?庫塔法和梯度法作了詳盡的討論。
  12. The numerical values of the one order differential equations are obtained by runge - kutta method with variable step

    軟體採用了變步長的經典龍格?庫塔方法求解一階微分方程組的數值解。
  13. A 4 - order runge - kutta method is used to solve the droplet trajectory equation in order to determine the droplet impingement zone. 4

    採用經典的四階龍格-庫塔法對其求解，以確定水滴在翼面上的撞擊區。
  14. Nnd difference scheme divergences convection item and runge - kutta scheme iterates time item. the calculated outcome agrees well with the experiment data and analytic solution

    採用nnd差分格式離散對流項，時間迭代採用龍格庫塔法，計算結果與實驗值和解析解一致吻合。
  15. In the computer program, the regional parameters are given, then the equation groups are solved with runge - kutta method, the calculation results in rated condition are obtained

    在計算程序中，先確定已知初始參數，再應用龍格?庫塔法對微分方程組進行求解，得到標定工況模擬計算結果。
  16. We also use fourth runge - kutta method simulate the opcpa process in the case of considering signal and pump temporal profile and phase mismatching and get gain and spectra properties at different pump temporal profile

    我們還在考慮時間波形和相位失配的情況下，利用四階龍格-庫塔法對光參量啁啾脈沖放大進行了數值模擬計算，得到了不同泵浦光時間波形時的增益與頻譜特性。
  17. Secondly, basing on the theory of on - off gain of small signal, the raman gain coefficient for frequency shift between 0. 5 and 20 thz of standard sigle mode optical fiber is measured by pump - probe method through a super luminescent diode ( sld ) as a broadband small signal probe source. thirdly, numerical simulation analysis of gain characteristic of raman fiber amplifier for c band wdm signal light is made according to the raman gain coefficient of the fiber measured before through target and four rank runge - kutta method. at the invariability of wavelength and maximum power of each of two pumps, schematic of powers of two pumps for best flatness on c band wdm optical gain was found out, at the same time, the factors of resulting in gain saturation is analyzed, too

    本文首先應用經典的電磁理論對拉曼光纖放大器的工作機制進行了分析，然後，根據小信號理論推導出的開關增益求出了光纖拉曼增益系數的表達式，採用泵浦-探測波的方法，利用超輻射激光二極體（ superluminescentdiode簡稱sld ）作為探測光源，測量了所用標準單模光纖頻移為0 . 5 - 20thz的拉曼增益系數，之後根據所測得的光纖的拉曼增益系數譜對應用該類光纖構成的放大c波段wdm光信號的拉曼光纖放大器的增益特性採用打靶法和四階龍格- - -庫塔進行了數值計算，在給定了兩個泵浦光源的波長和最大功率后，找出了反向泵浦情況下使c波段wdm光源增益最平坦的兩個泵浦的各自最佳功率，同時也分析了導致信號光飽和的原因。
  18. It was established that the dynamic mathematic models of typical work state : steady states, process of changing speed of the open - loop propulsion system in the same depth, process of changing depth in the same speed. four steps runge - kutta was adopted in the simulation of the process mentioned above, satisfying results gained

    建立了開式魚雷渦輪動力系統的穩態過程、開環狀念下的恆深變速過程、恆速變深過程的動態數學模型，採用經典的四階龍格?庫塔演算法對其進行了模擬計算，得到了比較滿意的結果。
  19. In this thesis, the spectral characteristics of a fiber grating are analyzed by using the coupled mode theory. the influences of various structural features such as the length, chirp, coupling coefficient and aperdization to the spectral characteristics were studied numerically with a transfer matrix method. the reflective spectral responses for fiber bragg gratings with different aperdization are analyzed, and the optimal aperdization is ob tained

    首先論文利用耦合模理論對光纖光柵的光學特性進行了詳細的分析，在對比了龍格庫塔法和傳輸矩陣法這二種常用的分析方法的基礎上，選擇傳輸矩陣法著重研究了光纖光柵長度、啁啾系數、耦合系數以及各種切趾函數與其反射譜譜寬、反射率極值、時延、色散等特性的相互關系及影響。
  20. Power bond graph is used to established the bond graph model of the lifting and dropping of hydraulic pile hammer and state space equation in the paper for hydraulic pile hammer is perplexing nonlinear system. in order to attain the graph that pressure, position, velocity, acceleration vary with time in the course of driving pile simulation procedure solving state space equation is designed on the basis of combining four - order runge - kutta method with predicator - corrector method, dynamic simulation of the hydraulic system is studied in matlab 6. 5. it is convenient to analyse dynamic characteristics of the hydraulic syste m, beneficial to the design and parameter optimization of the hydraulic system. in the final part of the paper, under detailed analysis of the control characteristics for double - acting hydraulic pile hammer with double cylinders, control system based on the programmable logic controllers founded on technology of modern compute is designed

    由於液壓打樁錘液壓系統是一個復雜的非線性系統，本文採用功率鍵合圖法建立液壓打樁錘上行、下降的鍵合圖模型和狀態空間方程，通過四階龍格?庫塔法和預估?校正法相結合編制了模擬程序對狀態空間方程求解，在matlab6 . 5中進行液壓系統的動態模擬，獲得液壓打樁錘運動過程中壓力、位移、速度、加速度等隨時間變化的曲線圖。此曲線圖方便了對液壓系統動態特性分析，為液壓系統的設計和參數優化提供了有益的借鑒。最後，在深入分析雙缸雙作用液壓打樁錘控制系統的功能要求后，採用了以現代計算機技術為基礎的新型工業控制裝置? plc可編程式控制制器，設計出了雙缸雙作用液壓打樁錘的電器控制系統。
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