computing velocity 中文意思是什麼

And the explicit finite difference method, the combining method of the central difference method and newmark s constant average acceleration method, and the transmitting boundary are used. by comparing the acceleration determined by the several methods of the displacements or velocities, a computing method of acceleration employed the one side difference of velocity is more practicality in this research. corresponding to normal incidence of the body waves, p waves or svwaves, and rayleigh surface waves, two two - dimensional finite difference programs are compiled to compu te the dynamic response of two - phase media

以土力學模型為基礎，利用以土骨架和孔隙流體的四個位移為基本未知量的數值方法去模擬二維飽水介質中的地震波傳播，採用了顯式差分方法（中心差分法和newmark常平均加速度法結合）和透射邊界，通過比較利用幾種差分格式求解的加速度結果，發現一種用速度單邊差分求解加速度的方法在本文研究中較為實用，分別編制了體波（ p波或sv波） 、 rayleigh面波輸入時求解兩相介質動力響應的兩個二維數值分析程序。

In this paper, using phoenics software to compute and analyze the variety rule of the convecting transfer heat at the basis of computing and analyzing the temperature and velocity field of one underfloor supply air room with a focus hot source, and concluding that the number of the hot source and the supply air outlet > the intensity of the hot source and the volume of supply air will influence convecting transfer heat, and obtained its correlativity formula

本文針對一下部有集中熱源的地板送風空調小室，利用phoenics軟體，在計算分析小室內氣流的速度場及溫度場的基礎上，對對流熱轉移量的變化規律做了計算分析，最後得出對于下送風小室的對流熱轉移量與熱源的個數、送風口個數、熱源強度、送風量等因素有關，並且得出了其相關關系式。

Using matlab and its add - ons simulink, through establishing simulation maths model, the paper integrates open chain vector equation ( describing motion restriction ), numerical value simulation ( computing velocity and displacement while given acceleration ) and matrix algebra, etc. to accomplish dynamic simulation for the robot and verifies the results for kinematics of the robot using analysis method, and it establishes foundation for following study for the robot such as kinetics, control, etc

利用matlab及其附加軟體simulink ，通過建立模擬數學模型，綜合開環矢量方程（描述運動約束） 、數值模擬（在加速度已知時計算速度和位移） 、以及矩陣代數等來完成機器人動態模擬，對所研究的機器人運動學分析結果進行驗證，結果基本一致，為機器人的后續研究，如動力學，控制等奠定基礎。

The paper analyzes the characteristic of aerodynamics with structure of helicopter propeller blade, dissertrates vortex theory and the theory about gliding air field which produce the power of helicopter propeller blade. at the same time it also deduce the method of computing the induced velocity produced by helicopter propeller blade with vortex theory. at last, an influcence to the spreading of sound is discussed

並且將兩種定位演算法進行了比較，說明了優劣；結合直升機的結構分析了旋翼的空氣動力特性，論述了直升機旋翼產生拉力的滑流理論和渦流理論，結合渦流理論論述了直升機旋翼流場誘導速度的計算方法，在此基礎上分析了直升機旋翼流場對聲音傳播的影響。

At the same time, this thesis focuses on the theoretical research on the lbgk method and discusses the inner relation between the lbgk and the n - s equations. the relationship among the selection of velocity group, the forms of equilibrium distribution functions, and the macroscopic n - s equations is clearly revealed. lbgk method has many advantages, such as easy dealing with the complex boundary conditions and high amenability to parallel computing

本文系統地總結了各種lbgk模型，特別是對lbgk模擬二相流和多相流模型進行了認真地研究；同時從新的角度對lbgk進行了理論研究，用全新的方法探討了lbgk和n - s方程的本質聯系，清晰地揭示了速度族的選擇、平衡態分佈函數的形式和宏觀ns方程三者之間的關系。

Neural network control is an important mode of intelligent control, and it is widely used in branches of control science, first, the architecture and the learning rule ( error back propagation algorithm ) of multiplayered neural network which is widely used in control system are presentedo especially, the paper refers to the architecture of diagonal recurrent neural network and its learning algorithm - - - - - recurrent prediction error algorithm because of its faster convergence with low computing costo next, before introducing the neural network control to the double close loop dc driver system, the controllers of current and velocity loop are designed using engineering design approach after analysis of the system, simulation models of the system are created

神經網路控制是智能控制的重要方式之一，它廣泛應用於自動控制學科各個領域。本文首先敘述了控制系統中常用的多層前饋網路結構及演算法（ bp演算法） ，特別提及了能夠較好描述系統動態性能的對角遞歸神經網路和在用遞推預報誤差演算法訓練drnn時取得了較快的收斂速度。其次，應用工程方法分析設計了tf - 1350糖分離機的電流、轉速雙閉環直流調速系統的控制器，作為引入神經網路控制的設計基礎，並建立了系統的模擬模型。

According to the high precision and rotation stability requirement of negative scan unit of cylinder photography typesetting machine, the three levels of cylindrical gears transmission separately, the two - stage cylindrical gears - worm drive, and the worm drive was chosen through calculating its velocity ratio, the checking transmission precision, carrying on the movement precision analysis to the sweep unit, and computing overall transmission error

摘要針對圓筒型照相排版機底片掃描裝置要求傳動精度高，轉動平穩的特點，分別選擇三級圓柱齒輪傳動，雙級圓柱齒輪蝸桿傳動，蝸桿傳動3種常見的傳動方式，計算其傳動比，驗算傳動精度，對掃描裝置進行運動精度分析，計算總體傳動誤差。

( 4 ) the slipping conveyance model and throwing conveyance model of single wet granule are set up, in turn, computing method of velocity for slipping conveyance and throwing conveyance is given

（ 4 ）建立了筒式篩網上非淹沒狀態下濕固相單顆粒的滑動運移和拋擲運移模型，給出了滑動運移和拋擲運移的速度計算方法。

Computing about five work conditions of slurry pump, the fields of velocity, compression and turbulence intensity are obtained, and the pump performance curves are also achieved to check the computation credence. based on the results of flow fields, particle tracks in varied conditions are achieved by using lagrange method

本文對渣漿泵的在5個工況下（包括設計工況）的清水流場進行了計算，得到了描述流場的速度、壓力、紊流強度等參數場的分佈情況，最後計算了泵的運行性能曲線來校核計算的可靠性。

At first using the method of inverse kinematical analysis, the computing formulae of displacement, velocity and acceleration of each component in the seven - bar mechanism and variation law of motion for the two expanding and contracting bar were derived, and then combining with analytical living example and according to the motion law of output component the motion law of driving part was computed, finally the transmission error was analyzed

摘要首先運用逆運動學分析的方法，推導出了七桿機構中各個構件的位移、速度和加速度計算公式以及兩個伸縮桿的運動變化規律；然後結合分析實例，根據輸出構件的運動規律，計算出驅動件的運動規律，最後分析了傳動誤差。

( 2 ) starting off with analyzing the forces affected on single dry solid granule on the roller screen, the relative slippage and slipping condition of granule at the tangential direction and axis direction of roller screen are discussed, and the average slipping conveyance velocity from feeding end to discharging end is given. the throwing conveyance of granule is discussed, the throwing coefficient of roller screen and its varying rule, and the concept of average throwing coefficient and its computing method are put forward, the starting condition and terminating condition for throwing motion of granule on the roller screen and the throwing conveyance velocity of granule are researched. the influence on throwing motion of granule by the rotating velocity of roller screen is discussed as well

（ 2 ）從筒式篩網上單顆干固相顆粒的受力分析著手，討論了顆粒在筒式篩網面上的切向相對滑動和軸向相對滑動及滑動條件，並導出了顆粒從進料端向出料端滑動運移平均速度；討論了顆粒的拋擲運移，給出了筒式篩網上的拋擲指數及其變化規律，提出了筒式篩網的平均拋擲指數的概念及計算方法，研究了筒式篩網上顆粒拋擲運移的產生條件和終止條件，以及顆粒拋擲運移的輸送速度；還討論了筒式篩網的旋轉角速度對顆粒拋擲運動產生的影響。

By 1 - d fourier transform, we could analyze wave spectrum and get wave speed by computing phrase shift, then calculate the velocity of the wind, so we can avoid the problem of " sub - pixel motion "

使用傅立葉相位分析法，對示蹤雲進行頻域波譜分析，由諧波的相位變化計算波速，繼而得出風速，能夠避免「亞像素尺度位移」問題，提高導風的精確度。

Relativel ~ ~ matlab language is more powerful than oilier computing language, especially in computation fluid mechanics, it helps to simply draw charts of vortex, stream function, velocity, pressure, and the amount of work can be extremely reduced, and the program coniplving can also be controlled easily

得到空化數的分佈以後，進而分析流場內空泡的運動軌跡，最後得到空泡半徑在流場內隨壓力的變化關系曲線，以及在流場內空泡半徑沿壓力最小點的分佈規律。

Whats more important for grid environments is the velocity of computing

對于網格環境來說，更為重要的是計算的速度。

Parallel computing is an effective instrument. along with the developing of high - powered parallel processing system, image parallel processing technology will provide greater space for improving the velocity of image processing

并行計算是提高處理速度的有效手段之一，隨著高性能并行處理系統的發展，圖像并行處理技術為提高圖像處理速度提供了更大的空間。

The system properties of single - loop system, such as velocity, torque, bifurcated power, transmission efficiency are researched deeply using theoretical analysis and numerical computing, and gives new methods for designing which according to the design parameter a and combine with the system diffluent coefficient q and the ratio of x, p cell transmission. so the theoretical expressions for designing this kind of transmission is established. the design parameter a is put forward as the ratio of confluent power and the input power of single - loop system

通過對單環路系統的運動學和動力學特性、功率流特性、傳動效率特性等所進行的理論分析和數值計算，提出了以單環路系統主支路功率大小與輸入總功率的比值為關鍵設計參數的設計新方法，並結合系統的功率分流系數q和各組成單元的傳動比，得到了單環路系統的速度、力矩、功率流、傳動效率等計算公式，為該種傳動類型的設計提供了必要的理論依據。

With the development of computer and network ability, people ' s requirement for computing velocity, reliability of system and actual effect of cost must extremely stimulates the interesting in distributed parallel computing system. distributed system can be used at a lot of fields now and could be used everywhere in the future

隨著計算機的迅猛發展與網路性能的不斷提高，未來人們對計算速度、系統可靠性和成本實效性的要求必將極大地刺激人們對分散式并行計算系統的興趣，分散式系統在許多領域已經得到重要的應用。

This paper compares the computing results of the one - way coupling method and two - way coupling method, and the result indicates that the one - way coupling method is applicable when the mass and momentum ratio of the discrete phase in the turbulence flow velocity field is small in the chamber

文中對採用單向耦合和雙向耦合計算方法的計算結果進行了比較，結果表明爐內離散相在流場中的質量及動量承載率較低時，單向耦合計算方法適用於研究對象的冷態流場計算。

In this paper, the concepts, the historical background, the importance and current application of scientific computing and visualization of scientific computing are introduced and the visualization of computational detonation mechanics is specially expounded. based on the sumarization of the visualization software visc2d and visc3d directing at the mmic ( multi _ material in cell ), the key point of the improvement and the research contents are listed. based on the basic visualization reference model and the data file format of mmic, the file format of vector data is defined. the 2 - d data field visualization technology is described in detail. include the visualization of scalar field and vector field. the weak points of the visc2d software is overcome, and we propose the full - frame coloring mapping method and the visualization of the vector data using the clic ( coloring _ noise line integral convolution ). in addition, the method to draw and display shock wave by edge probing operator is introduced. in the design of the program, in order to overcome the shortcoming of visc2d with sdi ( single document interface ), the software vsv ( visualization of scalar and vector ) with mdi ( multi document interface ) is designed. compared with visc2d, the advantage of vsv includes : ( l ) vsv is a mdi applied software which can be used to view various kind of data, ( 2 ) vsv resolves the flash during displaying moving images which are produed by full - frame coloring method used to the visualization of scalar fields, and ( 3 ) vsv can be used to visualize vector field such as velocity. at last, the visualization of the output data from mmic in explosion and shock is realized by vsv

首先簡要介紹了科學計算與科學計算可視化的概念、歷史背景、意義及應用現狀，重點說明了計算爆炸力學中的可視化問題，在總結多流體網格程序mmic的可視化軟體visc2d和visc3d的基礎上提出了改進要點和本文的研究內容。在介紹可視化基本參考模型和mmic程序的數據文件結構的基礎上，給出了矢量數據文件的結構，詳細闡述了二維數據場的可視化技術，包括標量場和矢量場的可視化，針對原visc2d軟體的不足，給出了改進方法，提出了全幀著色映射方法和用於矢量數據可視化的基於噪聲著色的線積分卷積方法，以及提出了利用邊緣檢測運算元提取和顯示沖擊波的方法。在程序設計上，針對原visc2d軟體只適用於單文檔窗口的缺點，本文利用多文檔mdi窗口，研製了標量場與矢量場的可視化軟體vsv （ visualizationofscalarandvector ） 。

2 ) forward modeling method of refraction first - break in lateral varying velocity media. for layered media, a new forward modeling method of refraction is presented. for more complex near - surface conditions such as mountain areas, a new improved ray tracing method based on shortest path assumption is studied, it has higher accuracy and faster computing efficiency than conventional ones. the method can be used for the forward modeling of complex near - surface media

而對于折射面起伏較大、低速層和折射層速度變化較大的復雜近地表情況，提出了一種改進的最短路徑初至波射線追蹤方法，該方法精度高，計算速度快，適用於任意二維復雜近地表介質（如山地）的初至折射波的正演計算。