plane of flow 中文意思是什麼
plane of flow
解釋
憐平面-
In this dissertation, through computer simulation, the problems of modeling, control and guidance of auvs are presented. the first part of this dissertation addresses the problem of dynamically modeling of auvs, and derives thrusters " two - dimension nonlinear dynamic model, which has axial flow speed and propeller rotational velocity as two state variables, voltage or current of motor as inputs, and thruster force and torque as output. the second part focuses on the nonlinear adaptive sliding mode control of auvs in diving plane and steering plane
本論文系統研究了自主式水下航行器的建模、非線性自適應滑模控制、以及深度調整和水平面導引方法等問題，具體成果和創新點如下1 、根據流體力學理論，建立了螺旋槳推進器的動態模型，它以螺旋槳來流速度v _ p和螺旋槳轉速n為狀態變量，以電機施加轉矩為輸入，螺旋槳推力t和轉矩q為輸出。 -
At first, in the process of experiments, it were measured that dry plate pressures drop and point pressures in the flow fields around the single fixed - valve and double fixed - valves under different velocities by using of pitot tube. after that point pressure was transformed to point velocity, two dimensions flow plane of flow fields around fixed - valve were plotted to observe the difference between of the fixed - valve tray with fold edges and the common rectangular fixed - valve tray on the distributions of flow fields and pressures, to provide comparisons and refer - rence for cfd simulation
在實驗中，利用測速管等儀器對在不同速度下的單閥和雙閥固定閥周圍的流場進行了點壓力測量，然後把點壓力轉化為點速度后繪出固定閥周圍流場的二維流線圖，同時測定了塔板的干板壓降，來考察新型固定閥帶折邊后對流場分佈和壓降的影響，為隨后的數值模擬提供對比和依據。 -
Disturbance of plane viscous flow and hamiltonian system
平面粘性流體擾動與哈密頓體系 -
In addition, the vortex structures of the gas flow field and particle dispersion were studied when the coupling action between the two phases was considered in the case of different mass loading of mediate stokes number particles was provided in the gas - particle plane jet
另外，文中還模擬研究了氣粒兩相平面射流中不同質量攜帶率下中等stokes數顆粒與氣相流場的相間耦合作用下氣相流場的旋渦擬序結構以及顆粒運動擴散規律。 -
And then, in this part, following the idea of topping [ 51, 52 ], we will show an isoperimetric inequality ( 6. 3. 1 ) on surfaces of non - positive gaussian curvature by means of the curve shortening flow on surfaces, this inequality can be considered as a generalization of the banchoff - pohl inequality in the euclidean plane
然後，仿照topping [ 51 ]和[ 52 ]利用平均曲率流證明等周不等式的想法，我們利用曲面上的曲線縮短流在gauss曲率非正的曲面上證明了一個等周不等式（ 6 -
The problem of terminal dynamical sorting and the landing time decision for each plane were researched in this paper. and the approach seat, one module of guangzhou area air traffic flow management system was introduced
本文主要研究了終端區流量管理中航班到達隊列的排序、航班降落時間的指定以及廣州地區空中交通流量管理系統進近席位的實現問題。 -
Using an ideal two - dimensional mhd model, this paper investigates the evolution of a pure flow velocity enhancement disturbance in the solar wind in the heliospheric equatorial plane ( 2 - d, 2 - component model ) and the heliospheric meridional plane ( 2 - d, 3 - component model )
摘要採用二維理想mhd模型，分別在日球赤道面（二維二分量模型）和日球子午面（二維三分量模型）內研究太陽風中純速度增幅擾動的演化。 -
Numerical models are frequently used to simulate water flow in hydraulic engineering. shallow water equations are basic governing equations with assumption of the velocity distribution uniformly in vertical, so they have some limitations on the simulation of some plane flows, such as wind - induced flow, curve river flow and flow nearby the submerged dikes. for above - mentioned reasons, extended shallow water equations are developed by introduction of momentum coefficient, correction of convection and bed resistance in equations of motion
在水利工程中經常需要採用數學模型模擬水流的流態，淺水方程是進行平面流態模擬計算的基本控制方程，但因其忽略了流速垂線分佈的不均勻性，在模擬某些平面流態（如風生流動、河灣水流、潛壩等工程附近的流動）時存在一定的局限性。 -
( 4 ) the drag reduction of plane - surfaces with v - shaped grooves is given out by direct numerical simulation, and the drag reduction mechanism in the base of the secondary flow theory is suggested
（ 4 ）利用直接數值模擬方法求得平板上v ?型條紋表面上的降阻情況，並給出基於二次流動理論的降阻機理。 -
A 2 - d model for debris flow is tested by experimental data of debris flow deposition. the plane extent, maximum length and width of the alluvial fan are computed under different conditions of supply process, initial ground slope and flow density
為了驗證二維粘性泥石流運動數學模型的正確性，以泥石流小型堆積模型試驗為模擬對象，計算模擬在不同來流方式、堆積區坡度和泥石流容重情況下的泥石流堆積范圍。 -
The computation of 3 - d flow fields in channel with 2 - d plane numerical model
矩形連續彎道流場簡化計算數學模型 -
Among many methods of classifing plane flow unit, the author find that the flow unit classified by grey association method not only reveal cause of formation. but also better inosculate with production performance by contrast. so the author select the grey association method as the best method to classifing plane flow unit. by it the target beds in this area are divided into four types of flow unit. they are a type, b type. c type and d type
在劃分平面流動單元的多種方法中，經過對比，發現灰色關聯法劃分的流動單元不但能體現成因特徵，而且能較好的與生產動態相吻合，所以選用了灰色關聯法作為劃分平面流動單元的最佳方法。用此法把研究區儲層劃分為a 、 b 、 c 、 d四種不同類型的流動單元，並提出了平面流動單元有三種分佈形式：獨立分佈型、平面聯合型、垂向復合型。 -
The coupled effect is analyzed for an elliptical inhomogeneity under plane uniform loads and linear temperature change at infinity. the complex potentials are obtained for an elliptical inhomogeneity under plane uniform mechanical loading, uniform temperature change and uniform heat flow directed at any angle. the discussion is also given to the variation of the interfacial stresses with thermal parameters
分析了無窮遠平面加載和線性溫變的耦合效應，獲得了橢圓夾雜體在無窮遠平面均勻加載和均勻升溫以及任意方向的均勻熱流共同作用下的復勢解答，並討論了界面應力隨各熱載參數的變化規律，發現基體導熱性能越好（與夾雜相比） ，界面應力幅值越大。 -
And then simulations of gas - particle two phase plane wake and gas - particle two phase plane jet were carried out by using this model. after numerical simulations of the two flow fields were finished, series of analytical work was done. first, the distribution of time - averaged velocity, turbulence intensity was analyzed, and some of the simulation results were compared with those of the experiments ; the coherent structure of vortices in the near wall region of the plane wake flow were studied by describing the evolution of the eddy structures, including the forming, developing and shedding from the wall of the vortices in the near wall region ; the coherent structure of vortices in the whole field was also studied, such as the forming, developing, moving, pairing and merging of the eddies etc.
在對上述兩種流動形態的二維大渦模擬研究中，首先全面地分析了氣相時均流場的速度、湍流強度的分佈規律以及氣相速度的脈動規律等並就部分數值模擬結果與實驗結果進行了對比研究；分析了平面尾跡流場中近壁處旋渦擬序結構，全面和逼真地反映了近壁處旋渦的生成、發展和脫落的規律；描述分析了平面尾跡流和平面射流的全場流動旋渦擬序結構，從整個流場的角度反映旋渦的生成、發展、運動以及旋渦之間相互配對、合併的作用規律等。 -
An experiment report of plane couette flow with zero shear - stress plane
具有零切應力平面的平面科特流實驗研究 -
The two - dimension plane model and two - dimension vertical model developed have been used in practical projects, in which : in the flood simulation of daqing city, the two - dimension plane unsteady flow model has been built to fit in with the irregular river boundary and realize the rapid forecast of the water flow. in this model, the geographic information sys
在博斯騰湖大水體研究中採用平面二維水流與水質模型，可完全適應不規則的湖岸邊界，考慮表面風應力，對吞吐量、風力、泵站位置、水位四種因素的多種組合情況下的博斯騰湖風生環流、礦化度分佈及出流水質進行了模擬計算，獲得了一些有意義的研究成果。 -
Numerical simulation of sediment in oscillatory flow over plane bed
振蕩流底層懸沙運動的數值研究 -
The exact design methods of switched - current filters are summarized, such as the director synthesis of z - plane, euler mapping, state variable analysis, matrix decomposition, and signal - flow - graph simulation of the lc and switched capacitor prototypes. at the same time, a modified left decomposition matrix method is proposed to overcome the usual problems of large silicon area, high sensitivity and component spreads by minimizing the input circuits. examples of switched - current low - pass, high - pass and band - pass filters are given to verify the feasibility of these methods
總結分析了實現高精度開關電流濾波器設計的各種實用方法，包括z域綜合法、歐拉映射法、模擬無源lc網路和開關電容網路的狀態變量法、矩陣分解法和信號流圖轉置法，並對左分解法加以整理改進，提出一種更為簡潔的設計結構，通過減化輸入電路克服一般電路中存在的佔用矽片面積大、靈敏度高等問題。 -
The demarcation point of, which is the parameter in erf ' s yield stress equation, is 2. 0. for, the dynamic characteristics of the clutch are remarkably different from those for. thirdly, the linear stability of plane shearing flow with non zero pressure gradient is studied
論文第三部分對電流變液非零壓力梯度平板剪切流動的穩定性進行了分析，提出流場對屈服應力達到飽和的概念；並得出平板壁面剪切運動以及電流變液屈服應力的提高，都將使流動穩定性增強的結論。 -
Freezing efficiency of f atom in oxidant nozzle of different contour walls, mixing mechanism of reactants in 2slot ( two - dimensional, plane symmetry nozzle ) nozzle and comparison of flow - fields & ssg between 2slot and 3slot ( 3 - slit jet plane nozzle ) have been studied by using 2d cr program. the conclusion is significant to understand the requirement of reactant flows and to generate ideas for nozzles design
利用二維r程序，研究了單噴管型面對f原子凍結效率等參數的影響：研究了二維平面對稱噴管（ 2slo ）的反應流混合機制和混合角對激光器性能的影響；對比研究了zslot和三狹縫平面對稱噴管oslot ）流場和增益特徵。
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