渦流軸 的英文怎麼說
中文拼音 [guōliúzhóu]
渦流軸
英文
eddy axis-
We can use the mm5 model in definite time, definite area weather forecasting. we conclude that : : the moving route of this necw in its developing progress was direct - south along latitude, the cold air is rough, and just this made the rough vertical velocity ; the necw southern moving and conflicting with the west pacification sub - tropical high makes rough jet steam. the plenty south - west warm and wet air made by the jet stream gave the rainstorm demanded vapor ;. the rough vertical velocity by jet stream is a main reason in this rainstorm ; the mm5 model uses four - direction analysis data as its input, this avoids some errors occurred in observe and transfer, thus made the result more useful
綜合分析認為: ( 1 ) 、這次冷渦在其發生發展過程中,其移動路徑是沿經圈直線南壓,攜帶的冷空氣勢力較強,形成槽后較強的垂直運動; ( 2 ) 、西太平洋副熱帶高壓偏北位置與東北冷渦南壓形成的急流軸,把源源不斷的西南暖濕氣流輸送到遼西地區,也就是急流軸的左前方位置,為這次暴雨的產生提供了充足的水汽來源; ( 3 ) 、低空急流不但為暴雨輸送水汽,其造成的較強的垂直環流也是產生強降水的一個主要原因; ( 4 ) 、 mm5模式以四維同化資料作為初始場,最大限度地避免了觀測誤差可能造成的積分不穩定,提高了模擬結果的參考價值。On the basis of axial vortex theory, the aerodynamic performance of tilt - rotor model has been built, and using it to analyze the aerodynamic performance of xv - 15, comparing to the actual data to prove the model ’ s validity, finally studied the variety of aerodynamic performance relative to the variable rotor diameter
以軸向渦流理論為基礎,建立了適合於傾轉旋翼機氣動分析模型,以xv - 15傾轉旋翼機作為算例,通過結果的對比,表明本文的氣動模型能較好的分析傾轉旋翼機的氣動性能,並在氣動性能的基礎上分析了直徑變化對傾轉旋翼機氣動性能的影響。Proceed from the angle of energy and taking considerations on interference factor and drag of airfoil profile, a kind of new typed calculation method on the design of vane air foil was put forward according to the vortex aerodynamics model of the rotor of wind turbines with horizontal axis
摘要根據水平軸風力機轉子的渦流氣動模型,從能量的角度入手,考慮干涉因子和翼型阻力,提出了葉片翼型設計的一種新型計算方法。Based on researching the shaft bearing replacer, this paper built the models of electromagnetic field and vortex density in bearing race snap being induction heating
摘要在研究軸承內環感應拆裝的基礎上,建立了感應加熱過程中工件內電磁場和渦流分佈的基本方程。The regularities distribution of the electromagnetic field and vortex density had been simulated by the software matlab, the results of simulation not only proved the existence skin effect but also provided theory evidence for designing and researching of the shaft bearing replacer
通過matlab軟體對被加熱工件進行了電磁場和渦流分佈的計算機模擬,形象描述了工件內電磁場的分佈規律,證明了集膚效應的存在,為軸承感應拆卸裝置的設計研究提供了理論依據。Because the field caused by the eddy - current transducer in the dissertation is not only axially symmetrical, but also plane symmetrical, there is no normal component of the electrical field strength and we cannot apply the condition en = 0 to solve such a problem
由於本文中的渦流傳感器模型,其電磁場不僅是軸對稱場,而且還是平面對稱場,不含有電場強度的法向分量,所以無法利用邊界條件e _ n = 0來求解。Through the analyzes of electromagnetic system of a axial symmetry by the method of electromagnetic vector potential, an eddy current field math model is build by triangle cell, this article has researched the effect of power frequency to eddy current density, penetration depth and the skin effect
本文以電磁場矢量位有限元法為基礎對二維軸對稱場的磁場強度、渦流密度進行了計算求解,採用三角形單元和六面體單元建立了渦流場數學模型,研究了電源頻率對渦流密度、透入深度及集膚效應等場量的作用影響。Below are the work and results of the dissertation : 1. analytical solution to the eddy - current transducer with ferrite core according to the practical eddy - current transducer used in eddy - current not, the analytical model described by a solenoid coil with a coaxial cylindrical ferrite core of finite length " is established
論文的主要工作和結論概括如下:一、渦流傳感器電磁場解析解根據渦流無損檢測中實際使用的放置式線圈傳感器,建立了含有共軸有限長磁芯的通電圓柱線圈電磁場分析模型。The paper establishes mathematics model of electromagnetic heating system of eddy current field and temperature field, and gives corresponding discrete format with elements as eight nodes, hexahedron equal cell, through calculating eddy - current field to gain the internal heat source that the temperature field needed, to use discrete method to solve the problem of induction - heating part ' s temperature field by axial symmetrical electromagnetic, and then to analyze the characteristic of instantaneous temperature field
本文建立了電磁加熱系統的渦流場和溫度場間接耦合的數學模型,分析了不同頻率下渦流和溫度的分佈情況,並以八節點六面體等參元為例給出了渦流場對應的離散格式,通過計算渦流場獲得溫度場所需要的內熱源強度,加熱部件的溫度場以軸對稱格式進行離散求解,並對瞬態溫度場有限單元法的求解特點進行了分析。With this axial symmetric quasi - 3d model, the gas - flow field in such a wedge - shape air - gap is studied, the phenomena about taylor vortex in such a narrow wedge - shape air - gap is illuminated and the so caused gas - flow in axial direction is explained
採用準三維軸對稱的計算模型,對楔形氣隙的流場進行了研究,驗證了高速旋轉情況下,環形間隙流場中充滿taylor渦流的現象及相關規律。( 3 ) the most principal factors that influence the supersonic atomization process include the flow ratio of the gas - liquid metal ( gmr ) value, the flow of atomizing of gas and the range of the inverse vortex taper. the more of the value of three factors, the more advantage they are for the atomization and the more fine the powders are. ( 4 ) the produced powders are the best in efficient atomization efficiency, particle diameter, particle shape and dispersion when the solder alloy is zhl63a, atomizing medium is n2, the protrusion h = 6. 0mm, atomizing gas pressure p = 100mpa, over - heat temperature t = 167 ( t = 350 )
研究結果表明: ( 1 )超音速霧化器的氣體流場在導液管下端形成一個倒渦流錐,在二維空間上呈軸對稱的雙峰分佈,負壓形成於這個倒渦流錐內; ( 2 )修正後的霧化氣體速度公式可以滿足超音速霧化的要求; ( 3 )影響超音速霧化工藝最根本的因素有氣液質量流率比( gmr )的大小、霧化氣體流量和倒渦流錐范圍,三個因素的值越大,對形成細粉越有利; ( 4 )在焊錫合金為zhl63a ,霧化介質微n _ 2 ,導液管突出高度取h = 6 . 0mm ,霧化氣體壓力取p = 1 . 0mpa ,合金過熱度取t = 167 ( t = 350 )時,所制得的粉末在有效霧化率、顆粒球形度、粒度及其離散度三個方面綜合性能最好。Insulation shell in a new induction shaft coupling is a main element to solve leakiness of magnet pump, it often works in changing magnetic field so that eddy current is produced, and eddy current results in wastage and decreasing the efficiency
摘要磁力聯軸器中內外轉子間的隔離套是磁力泵實現無泄漏的主要零件,由於磁力聯軸器工作時,隔離套便處在變化的磁場中,則其內部將產生渦流,導致渦流損耗和傳遞效率降低。5. the numerical simulation of the axial vortex movement in the inlet side of the pump system with the method of discrete vortex provided a new way for hydromechanical characteristics of a pump system
用離散渦方法計算渦系位置的演化模擬泵入口側渦量場的軸向渦流運動,為研究泵系統入流側渦量場特性提供了一種定量研究方法。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。Finally, the wave equation of the electromagnetic field of this kind damper is derived from the maxwell ' s equation. the magnetic flux density at the boundary is assumed to be harmonic, so the analytical result of the wave equation is solved. when the rotor rotates, eddy currents flowing inside the conducting material field are caused
最後,應用ahrens的電磁軸承簡化模型,從maxwell方程出發推導了應用於本文所述的被動式電磁阻尼器的波動方程,並用傅立葉級數把矩形磁場展開的諧變磁場作為磁場的邊界條件,通過求解波動方程得到磁場的解析解,從而計算了阻尼器對轉子的電磁力和由渦流引起的切向力產生的阻尼器附加功耗。The results show that an eddy surrounding the main stream of the multiple jets exists and forms several strong shear flows and enhances the effect of energy dissipation
研究結果表明:多股多層淹沒射流利用在射流軸線周圍所形成的強剪切、三維立體漩滾的劇烈混摻來實現消能,消能率較高,且在平面上沒有形成明顯的、貫穿的立軸漩渦。Firstly, the basic character of the remote filed eddy current is simulated and analyzed in case of two - dimension axial symmetry which approves the existence of remote filed eddy current phenomenon ; the full circumferential defect model is investigated to approve the feasibility of using the rfec techniques to detect the position and depth of defect ; the pit corrosion 、 circumferential and axial crack models are simulated, and the defect character based on voltage plane polar plot and the changes of phase and amplitude are analyzed to supply the standard for defect reconfiguration
首先,在二維軸對稱情況下模擬與分析了遠場渦流的基本特性,證實了遠場渦流現象的存在;對全周向缺陷的遠場渦流檢測進行了詳細研究,證實了遠場渦流檢測缺陷位置和深度的可行性;對點狀腐蝕、軸向與周向裂紋三種非軸對稱缺陷進行三維有限元模擬,利用相位差和幅值變化曲線與電壓平面極坐標圖對缺陷特徵進行分析,為缺陷形狀重構提供了依據。On the basis of experiments the axial vortex in pump system is analyzed and calculated, the vortex line formulas of planar, cylindrical and axial vortexes are given, and their vortex lines aregraphed
在試驗研究的基礎上,對泵系統軸向渦流進行了分析計算,給出了平面渦流、柱面渦流和軸向渦流的渦線計算公式,並繪出了它們的渦線。An analytical research on evolution of axisymmetric vortex in weakly secondary shear flow
弱二次切變流軸對稱渦旋演變的解析研究In this subject, a new method and technique that applied the error separation theory to test of the surface flaw of axis - like parts using eddy current is proposed for the first time. based on this method, a mathematical model of extracting the surface flaw of axis - like parts is established. then " an automation system for the eddy current examination of the surface flaw of axletree " is designed
本課題首次應用誤差分離理論提出了對軸(孔)類工件表面缺陷進行渦流無損檢測的新方法和新技術,建立了基於該方法的提取軸(孔)類工件表面缺陷的數學模型,並設計了「軸承滾子表面缺陷渦流自動化檢測系統」 。分享友人