軸流速度 的英文怎麼說
中文拼音 [zhóuliúsùdù]
軸流速度
英文
axial velocity- 軸 : 軸Ⅰ名詞1. (圓柱形的零件) axle; shaft 2. (對稱部分的直線) axis 3. (圓柱形的纏繞器物) roller; spool Ⅱ量詞(用於纏在軸上的線以及裝裱帶軸子的字畫)
- 流 : Ⅰ動1 (液體移動; 流動) flow 2 (移動不定) drift; move; wander 3 (流傳; 傳播) spread 4 (向壞...
- 速 : Ⅰ形容詞(迅速; 快) fast; rapid; quick; speedy Ⅱ名詞1 (速度) speed; velocity 2 (姓氏) a surna...
- 度 : 度動詞[書面語] (推測; 估計) surmise; estimate
- 速度 : 1. [物理學] velocity; speed; blast; bat 2. [音樂] tempo3. (快慢的程度) speed; rate; pace; tempo
-
The velocity field has been designed in this article on defect of rolling workpiece surface about cross wedge rolling technique in the process of forming axial symmetry spare parts by result of simulated experiment of consult document [ 4 ]
摘要依據文獻[ 4 ]的模擬實驗結果,擬定了楔橫軋工藝成形階梯軸類件時軋件表面出現表面缺陷(蛇皮狀或魚鱗狀缺陷)時的金屬流動速度場。After analysing several kinds of light - weighting structures through ansys, hexagonal speculum structure is confirmed. in the aspect of the controling of speculum, the paper adopts the brushless dc motor which is partial assembled to drive the point speculum and the inductosyn as angle measuring component is selected, the ad2s80a the system is used to get directly angle and angular velocity. double closed - loop speed and position control is designed, as the pid control is the well - developed algorithm, which can achieve stable rotation and precise position control
在指向反射鏡的擺動控制方面,採用低速性能好的分裝式直流力矩電機作為指向反射鏡的驅動電機,並採用感應同步器作為角度測量元件,運用軸角轉換器ad2s80a進行角度和速度的輸出,採用技術成熟的pid控制方案,進行速度和位置雙閉環控制,以實現指向反射鏡轉動速度的平穩性和位置的精確性。The radial velocity profile of the liquid is dependent on the superficial air velocity and the column height, and flows from the wall to the center at bottom of the column
徑向液相速度既與氣相折算速度有關又與位置高度有關,在塔底部呈現負值,這意味著向塔軸心方向流動。In different in terne die travel, the metal flow characterize in warm extrusion forming processes and the affection for the flow of metal stage which made by the difference between the blank bottom altitude and the axial direction limiting size in warm extrusion forming technique have been analysed we have gotten the equivalent strain field and the velocity field and other field variable that the blank in different in terne die travel and the die travel - load curve. at the same time, we have analyzed the contributing factor for the oil pump stator forming process optimized and achieve thereasonable die parameter for the war m extrusion forming finally, the optimized technics parameters were used into pilot production, then the qualified oil pump stator forging were produced, the analog results were compared with those of pilot production
論文具體分析研究了不同成形工藝過程中金屬流動的特點,並對不同凸模行程下溫擠成形過程中的金屬流動特點、坯料連皮厚度(底部高度)與溫擠壓成形工藝中的軸向界限尺寸的差值對金屬變形階段的影響進行了分析,獲得了坯料在不同凸模行程下的等效應變場、速度場等場變量及凸模行程-載荷曲線,同時對油泵定子成形過程的影響因素等進行了分析,優化並獲得了合理的溫擠成形工藝及模具參數。最後,利用模擬優化獲得的各項工藝參數進行生產實驗,得到實際生產出的合格油泵定子件,並將模擬結果與生產實驗結果進行比較。Three kinds of results are obtained by simulation calculating the two models : the composed vector diagrams of the axial velocity ( v ) and the radial velocity ( vr ) at the different times in the symmetry section ; diagrams of curves of the velocity vector ( v ^ ) and ( vr ) at the different times in the different sections ; diagrams of the secondary flow vectors at the different times in the different sections
我們對兩種不同直徑的s型血管進行了有限元模擬計算,得到三種結果:在對稱面內不同時刻的軸向速度v _和徑向速度v _ r的合成矢量;在不同截面不同時刻的速度分量v _和v _ r的曲線圖;在不同截面不同時刻的二次流的矢量圖。Based on the review, the fluid flow and heat transfer in the curved circular and rectangular pipes have been researched by employing perturbation method and numerical simulation with a physical model under the rotational orthogonal curvilinear coordinate in a rotating curvilinear pipe with multi - parameters. we firstly analyzed the fully developed fluid flow and heat transfer, mixed convection heat transfer, the development of flow and heat transfer in the inlet in different cross section ( circular, elliptical, annular and rectangular crossection ). the variations of the secondary flow, axial velocity, distribution of temperature, the friction force on the wall, the ratio of friction factor as well as the nusselt number with different dimensionless parameters had been examined in detailed
本文在總結和分析了一個世紀以來有關曲線管道流動和換熱特性的研究成果的基礎上,以旋轉正交曲線坐標系統下的多參數旋轉螺旋管道中的對流傳熱為物理模型,通過攝動方法和有限體積法,首次對各種截面(圓截面、橢圓截面、環形截面、矩形截面)旋轉曲線管道內充分發展流動的流動結構和傳熱特性(包括耦合對流傳熱特性)以及旋轉曲線管道開口段發展流動的流動結構和換熱特性進行了系統的數值模擬和理論分析,詳細討論了各種無量綱參數對管道內軸向速度分佈、二次流結構、溫度分佈、壁面摩擦力、摩擦系數比以及管道nusselt數的影響,獲得了若干創新性成果。The saffman force does not affect the axial velocity of the flow, while it change the concentration of the particle. the gas - particle two - phase flows in the present of temperature were also numerical simulation
討論了絕熱、有溫差和添加熱泳力三種情況下的兩相流場,分析了溫度梯度、湍動能、軸向速度和顆粒濃度的變化。( 6 ) as dean number is increased, the secondary flow firstly becomes symmetry and then the anticlockwise vortexes are enlarged, the contours of axial velocity and the stream function become symmetry, the secondary flow is intensified and the friction factor ratio increases
( 6 )增大dean數,二次流先趨于對稱而後逆時針方向的二次渦增大,軸向速度和流函數等值線趨向于對稱,摩擦系數比增大。( 5 ) as torsion is increased, the anticlockwise secondary vortexes and the negative area of the stream function increase ; the axial velocity moves anticlockwise ( annular pipe ) or clockwise ( circular pipe ) ; the friction factor ratio finally reaches the value about 1
( 5 )增大撓率,逆時針方向旋轉的一二次渦和流函數的負值區域增大,軸向速度最大值的位置按逆時針(環形截面)或順時針(圓截面)方向旋轉,摩擦系數比最終趨向於1 。We analyze the effects of the flow parameters and the geometrical parameters on the axial flow, the secondary flow and the friction
分析了各種流動參數和幾何參數對軸向速度、二次流動、壁面摩擦力、摩擦系數比的影響。Relaxation factors are adopted. a program is produced to simulate swirling air flow in a horizontal straight pipe and compare with experiment data. the simulation prove that the modified k - model can predict the core, annular and wall regions near entrance and axial velocity far from entrance, but it ca n ' t predict tangential velocity well in weak swirling area far from entrance
編程計算水平圓管內螺旋氣流的流動參數並與實驗數據對比,結果表明修正-湍流模型在近入口處基本上能預測出中心區、環形區和近壁區的流動特性,在遠離入口弱旋流區域對軸向速度的預測符合實際情況,但是出現對周向速度修正過大的現象。( 2 ) with f varying, there exists a number fr which is about - 1 ( curvature, torsion and dean number have little influence on fr ), when f > fr, the maximum of the axial velocity is near the outside bent and the friction factor ratio increases with f increasing ; when f < fr, the maximum is near the inner side bent and the ratio increases with f decreasing ; when f = fr, the distributions of the axial velocity are similar to those of poiseuille flow and the friction ratio is about 1
( 2 )當f變化時,存在確定的數值fr ( fr在- 1左右。曲率、撓率和dean數對fr的影響很小) ,當f fr時,軸向速度最大值偏向外側,摩擦系數比隨f增大而增大;當f fr時,軸向速度最大值偏向內側,摩擦系數比隨f減小而增大;當f = fr時,軸向速度的分佈和poiseuille流近似相同,摩擦系數比約為1 。The axial velocity, fluctuation velocity, the turbulence intensity, and transverse velocity of the fine particle were studied
研究了管道中近壁區顆粒的軸向速度、湍流強度和徑向速度。The existence of a log - law in the centreline velocity profile and the variation of the turbulence intensity in the centreline were discussed in detail
進一步探討了軸線速度分佈中對數定律的存在和軸線上相對湍流強度的變化情況。This thesis is aimed to study the flow field in circulating fluidized bed ( cfb ) holier in cold state based on the system of particle image velocimetry ( piv ), several parts are included : the distribution of particles velocity in cfb boiler including radial velocity and axial velocity of particles ; the average radial and axial concentration distribution of particles in cfb boiler ; the average radial and axial size distribution of particles in cfb boiler
本文採用piv系統對循環流化床鍋爐冷態流場進行了試驗研究,研究的主要內容包括:循環流化床冷態流場粒子的速度分佈特性,包括粒子的徑向速度和軸向速度分佈;循環流化床顆粒的平均濃度沿徑向和軸向分佈特性;循環流化床顆粒平均粒徑的軸向和徑向分佈特性。Larger changes were measured in the near wall region. the numerical simulating results of the gas - particle two - phase flow in duct show that the velocity difference of the gas and particle in the near - wall region would increase as the diameter of the particle enlarge
絕熱兩相流的數值模擬結果表明顆粒在壁面的跟隨性隨粒徑的增大而下降,近壁區saffman升力的存在對兩相流動的軸向速度影響不大,但對顆粒的濃度分佈有一定的影響。The transport of macromolecules in curved tubes with permeable arterial wall was simulated numerically. the fields of axial velocity, the fields of secondary flow function and the distribution of wall shear stress along the transverse section of arterial wall were obtained under different dean number, 10
10800 ,計算了彎曲血管內的二次流軸向速度場和剪應力沿管壁分佈的情況。計算求得了在不同dean數和peclet數下,其中10There are two evident cyclonic eddies whose centers lie at 34 n, 164 band 33 n, 176 e, and two evident anti - cyclonic eddies whose centers lie at 33 n, 175 e and 32 n, 162. 5 e. the result seems to suggest a causal relation between the formation, evolution and disappearance of the eddy and the kuroshio meander path
其中比較明顯的渦旋包括中心位置分別位於34on , 164oe和33 「 n , 176 「 e附近的兩個氣旋渦和中心位置在33on , 175oe和32on , 162 . 5oe的兩個反氣旋渦。本文認為渦旋的形成、發展與消亡與黑潮路徑的彎曲程度以及主軸流速的大小有著密切的因果關系。Measuring axial velocity and its dispersion for liquid droplet streams
液滴束流軸向速度及其彌散的測量Then, the distribution of tangential, radial, axial components of velocity and pressure is given
同時得到了流場內部切向速度、徑向速度、軸向速度及壓力分佈規律。分享友人