軸向場分佈 的英文怎麼說
中文拼音 [zhóuxiàngchǎngfēnbù]
軸向場分佈
英文
axial field distribution-
Many high - power microwave ( hpm ) sources utilize an azimuthally symmetric output mode such as the tm 01 circular waveguide or the coaxial tem mode as output mode. if radiated directly these azimuthally symmetric modes will generate a doughnut - shaped pattern, with a null on boresight
許多高功率微波源產生的微波模式都是圓波導軸對稱模式,由於其輸出埠的口徑場分佈具有圓對稱性,將導致軸向為零的環狀遠場方向圖。In this section the author analyses the rules of the pile ultimate tip resistance and the shaft friction resistance distribution and their exertion of cast - in - place socketed piles instrumented with strainometers in soft muddy rock. the second aspect of the paper is the analysis on the current rock pile vertical bearing capacity in the four standards gb50007 - 2002, tb 10002. 5 - 99, jtj024 - 85 and jgj94 - 94, then the design method with correlated formula of socketed piles in xigeda - mudstone is given. at the end of this paper, based on the research of pressure grouting technique in recent years, and combined with in - site test result, this paper puts forward the design and calculation method to grouted pile in xigeda - mudstone and the principle of choosing grouting parameters, which provid es experiences for applying this technique and further studying
本論文結合省級科研項目「西攀高速公路昔格達組泥巖層中鉆孔樁提高承載力的研究」 ,所做的研究工作主要在以下三個方面:一是根據8根樁身內埋設量測元件試樁的單樁豎向靜載荷試驗資料,分析了各試驗樁特別是常規沖孔灌注嵌巖樁在昔格達泥巖中的軸向力、側摩阻和樁端阻力的分佈和發揮規律;二是在討論現行規范對嵌巖樁承載力的計算公式的基礎上,探討了在昔格達泥巖層中的沖孔灌注嵌巖樁的側摩阻和端阻的計算方法,並推薦了相應的計算公式;最後,在吸取近年來對灌注樁后注漿技術研究成果的基礎上,結合現場試驗研究結果,分析了該項技術在昔格達巖層中的應用效果,提出了相應的參數選取,從而為壓力灌漿技術的工程應用和進一步研究提供經驗,並為今後在該地層中合理選用樁型以及指導施工提供了依據。Abstract : a tube reactor mixed by an axial continuous flow and four side jets as the dispersed flow is studied. the concentration distribution of the dispers ed flow was measured by means of the laser light scattering. the different flow patterns revealed the special construction of concentration distributions in relation with the velocity ratio of side flow and axial flow
文摘:研究了圓管反應器中四束側向對撞射流與軸向流形成的混合流動.應用激光粒子散射成像測量了側向分散相在混合流中的濃度場分佈,得到了不同的濃度分布圖形隨側向流與軸向流速比關系,揭示了內在有規律的獨特的濃度分佈結構Analysis of near - field distribution and cross - polarization radiation pattern cavity - backed microstrip patch antenna on a uniaxial substrate
單軸各向異性背腔式微帶貼片天線的表面縫隙場分佈及交叉極化方向圖分析In the scheme of the vccc, we calculate the relationships between the distributions of the magnetic field along z - axis or x - direction and various parameters of the vccc, and obtain several fitting equations that can be used to describe the relationships mentioned above
在v -型載流導體方案中,首先計算了磁場在導引中心處沿z軸方向和x方向上的分佈,分析了磁場空間分佈與載流導體參數之間的關系,給出了幾個擬合公式。It is found from the experiment that under the conditions of peak magnetic field of 0. 57t, beam pulse fwhm ( full width of half maximum ) of 44ns, a microwave radiation pulse with fwhm 25ns and whole width of 35ns is produced, when the intensity of the guiding magnetic field rises, the peak microwave power changes little but the width of the pulse reduces. the a - k gap also has obvious influence on the microwave radiation, the stable and higher microwave output is obtained under suitable gap
實驗中還發現,在峰值磁場0 . 57t和束流半高寬44ns情況下,得到了25ns半高寬和35ns底寬的微波脈沖信號,隨著導引磁場增加,微波信號幅值基本不變,但國防科學技術大學研究生院學位論文是微波脈沖寬度會逐步減少;實驗中還發現磁場線圈位置有一定的軸向調節范圍,說明在磁場軸向分佈的一定變化范圍內,器件都可以正常工作,這對以後的永磁場系統導引的微波實驗有利。The transient continuously distributive vortex can be replaced by a number of discrete point vortexes. the trajectory of vortex movement was computed with the method of discrete vortex and the axial vortex movement in the inlet side of the pump system was simulated
將泵入口側連續分佈的渦量場離散成有限數目的離散渦,用離散渦方法計算渦系位置的演化,模擬泵入口渦量場的軸向渦流運動。The mean profiles of reynolds stresses bear prodigious specialty, i. e. the lateral fluctuations at the centerline are inhibjied strongly and the longitudinal ones have the tendency of growing continuously, which is induced by the special symmetrical vorticity field
雷諾應力分佈有很大的特殊性,即軸線的橫向應力被強烈地抑制,而縱向應力卻有不斷變大的趨勢,這是由於特殊的對稱渦量場結構引起的。Firstly, when the pipe flow was laminar, the movement of fibers was computed in the 2 - d force formulae that were deduced from the slender body theory and in 3 - d integral method. results revealed that angles between fibers " axis and the orientation of flow would concentrate gradually on a low number as the re numbers increased. that is, the axis of fibers would rotate toward the orientation of flow
首先,當管道內流動為層流時,分別利用從細長體理論出發得出的纖維二維受力公式和三維分段積分計算方法模擬了大量纖維在流場中的運動,然後在最終時刻統計了纖維的偏角分佈,並得出相同的結果:隨著re數的增加,纖維粒子的偏角逐漸集中於小角度,即纖維軸線方向越來越集中於流向,此結果與實驗吻合較好。The main object of this paper is to design a diagonal impeller, which requires small size and high rotating speed the first step of design is to solve the radial distribution of parameters at the inlet and outlet of the blade, such as pressure, temperature and velocity. and then, according to the radial distribution, we can design the diagonal impeller blade. blade elements are defined on a cone, which pass through the blade edge streamline location
其設計思想是採用準三維設計方法,先進行二維流場計算,在葉片軸向間隙中設立計算站,應用數值計算方法計算葉片前後緣的壓力、溫度、速度等參數沿葉高的分佈,然後根據這些參數,選取若干個回轉面進行葉型設計;再將各回轉面上得到的基元葉型沿某一個積疊軸積疊起來形成三維葉片,最後對得到的三維葉片進行試驗,並對實驗結果進行分析比較。In fluent, the flow field of the tube wall, center, top, middle and bottom of the evacuated solar collector tube can be observed, the temperature - time curve and radial temperature gradient can be obtained, the heat loss of different part can be directly captured. 3. all kinds of effect factors of the flow field and temperature field have been analyzed
通過fluent計算,清楚地觀察到太陽能真空集熱管壁面和中心部分,頂部、中部和底部在各種工況下的流場分佈均不相同;得出了各種工況下的溫度-時間變化曲線,沿軸線方向的溫度梯度;同時還計算了各部分熱損的傳熱流量; 3The finite element method ( fe '. i ) is adopted to analyze the effects of the numbers of coil turns, current intensity and current frequency upon the rate of joule heat generation in details. the thermo - radiation analytical countermeasures of various types are adopted to carry out the numerical analysis of the effects of the crucible with different shapes and sizes and the blind holes with different depths opened in the tops of crucibles as well as coil positions upon the thermal field distribution whereby solving the main problem of field the thermo - field design of the induction - heating sic crystal growth system. a new combination idea of the thermo - field design obtained by means of the united design of the thermo - insulator and blind holes has been presented
採用有限元分析方法對線圈匝數、電流強度、電流頻率等對焦耳熱產生速率的影響進行了詳細的分析討論;採用不同的熱輻射分析策略,對不同坩堝形狀、坩堝頂部開設不同深度的盲孔以及線圈的位置等對熱場分佈的影響進行了數值分析,解決了感應加熱碳化硅晶體生長系統熱場設計的主要問題,提出了通過絕熱層與盲孔的聯合設計獲得所需熱場設計的思路,給出了根據軸向溫度梯度的波動對線圈位置實行動態調節以控制熱場的理論依據。But the sound field generated by this kind of transducers in medium has s ome " congenital " shortcomings : there always exist zero areas in sound - axes of near - field however we change the frequencies and radii of transducers, so we need to look for better radiate transducers. in this dissertation, we design and make two kinds of radiate transducers : bunchiness control transducer with electric polarity division and gaussian transducer
然而,這種類型的換能器在媒質中產生的輻射聲場,有其「先天性」的不足之處,在近場中無論平面活塞的頻率和半徑如何變化,軸上和沿徑向上都呈現出極大和極小交替分佈的干涉現象,因此我們有必要繼續尋求更為理想的輻射形式。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。The main contributions of this work are included as follows : ( 1 ) numerical tests of the outside axial and helical flows were carried out respectively. the velocities and pressure profiles and shear distributions have been obtained and they were compared due to the different flow field. it is concluded that when no particles are deposited, the helical flow would lower the pressure on membrane surface to some little extent but not markedly
( 1 )對外軸向流和外切向流兩種方式下膜器環隙內流場進行變參數數值實驗,作出流場及切應力的分佈規律,分析無顆粒沉積時層流條件下流動結構對過濾通量的影響,認為:採用外旋流的方式將對膜面壓力有削弱作用,但並不明顯。In this paper, the characteristics and details of the laminar flow fields in the annular gap of the modules were theoretically studied by numerical simulation method first time. the mechanism of the microfiltration with outside helical flow was analyzed. its results were compared with the former experimental results and those of outside axial flow mf and would provide the theoretical basis for optimization design
本文採用數值計算的方法首次對層流范圍內膜器環隙內的流場進行數值模擬,從理論的角度分析其流場分佈的細節和特點,與前人的實驗研究結果和外軸向流微濾進行比較,分析外旋流強化微濾的機理,對膜器優化設計提供理論依據。In this paper, three - tower building with name of oriental tunes square in xiamen is analyzed by the international current program sap2000, considering seismic action in two directions. by structural modeling and calculation, the characteristic of vibration of the multi - tower structure is analyzed, the influences of the rigid ratio of the enlarged base to top tower and translation - torsion coupled effects among several towers are investigated, the inter - story displacement, displacement of the top tower and deformation of tower ' s base floor in x and y major orientation under earthquake action are contrasted with those under wind load. at last, the distributing characteristics of stress of transfer plate and of the normal, shearing stress of mostly vertical elements under earthquake action are studied
本文以具有3個塔樓的廈門東方時代廣場為分析對象,採用國際通用有限元分析軟體sap2000進行結構建模和分析,考慮雙向地震動輸入,研究結構的振動特性,分析底盤與塔樓剛度比對結構的影響以及多塔之間的扭轉效應和平扭耦聯作用,對比風荷載和地震作用下塔樓在兩個結構主軸方向的層間位移、頂點位移以及塔樓底層的變形,分析地震作用下轉換層樓板的應力分佈特點及主要豎向構件的正應力和剪應力分佈特點。Axial field distribution
軸向場分佈Electromagnetic field distribution of radial magnetic bearings and axial magnetic bearings in magnetic levitated hard disk drive are analyzed and calculated through fea method and ansys software ; electromagnetic field is measured on radial magnetic bearing stator of magnetic levitated hard disk drive, the results of fea and measurement are compared, the basic principle of electromagnetic field distribution is concluded
使用有限元方法和ansys軟體對磁懸浮硬盤的徑向軸承、軸向軸承的電磁場分佈進行了分析和計算;以磁懸浮硬盤徑向軸承定子為對象進行了磁場測量,並將有限元計算結果和實測結果進行了比較和分析,得出了磁力軸承電磁場分佈的基本規律。In the paper, consolidation effects on stress and displacement distributions are n ' t taken into consideration due to supposing that foundation soil consolidation has completed after surcharging preloading. based on the inherent anisotropy and induced anisotropy of foundation soil body, transversely isotropic elastic constitutive relations are adopted to simulate half - space clastic foundation body. the relations between displacement and displacement function are proposed by extending t, ove displacement function to transversely isotropic elastic half - space
本文假設地基土體是經過超載預壓處理過的,固結已經完成,不考慮固結對應力、位移場分佈的影響;基於地基土存在著固有各向異性和誘發各向異性,在前人的基礎上對e地基模型進行修正,採用橫觀各向同性彈性模型模擬無限彈性半空間,將love位移函數推廣到半空間,得到位移與位移函數之間的關系,然後經過hankel變換得到非軸對稱問題位移、應力的一般解。分享友人