軸向渦流 的英文怎麼說
中文拼音 [zhóuxiàngguōliú]
軸向渦流
英文
axial eddy-
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。In chapter 3, the subgrid eddy - viscosity model for large eddy simulation is applied to calculate the three dimensions unsteady periodic turbulent flow in yantan francis turbine. the pulsating characteristics of some main physical parameters in flow field are found. the calculated axial water thrust of hydraulic turbine agrees with the model - test value
第三章採用大渦模擬亞格子渦粘模型,對巖灘混流式水輪機的流場進行三維非定常湍流分析,得到了流場中各物理量的脈動特性,計算出ms的軸向水推力與模型試驗值大小相當;同時論證了對于下機架承重的混流式水輪發電機組可採用其推力軸承負荷作為水電站廠房振動的最大垂直激振荷載。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。In this axial turbine, steam always flows along the axis of rotated axis, thus, all blades extend with the radiation shape along the axis outward
在這種軸流式渦輪機中,蒸汽總是沿主軸的旋轉軸流動的,因此,葉片由主軸向外呈輻射狀展開。They are mainly used in manufacturing plants for ventilation or delivering gaseous materials and products thus they are considered the necessary equipment in ventilation, dust collection, acid and odor removal. there are numerous types of domestic products but most are exhausting fans, radial fans, vortex fans and axial fans. the technology controlled by domestic companies has been elevated from earlier dependent on international companies for technical assistance to self - sufficient in manufacturing
除臭設備及焚化爐等設備不可或缺之一環,目前國內所產制之抽送風機種類繁多,而以抽風機、徑向式送排風機、渦輪式送排風機及軸流式送排風機居多,製造廠商之設計製造能力已由早期的仰賴國外技術支援而提升至相當之自製程度,目前國內所產制透浦式送風機之最大處理風量可達( 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 。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。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。The conception of yield stress saturation is proposed. it can be found that the flow is stabilized by both plane shearing and the increment of yield stress. the study about the linear stability of spiral taylor - couette flow is the fourth part of the dissertation
通過對螺旋t - v流動的數值模擬發現,屈服應力增大將使流場中taylor渦減弱,且當屈服應力足夠大時,螺旋t - v流動重新恢復螺旋t - c流動;內桶軸向剪切運動在使taylor渦發生軸向遷移的同時也使其強度減弱。The main results can be summarized as the folio wings : in the certain parameter range, the circular shearing basic flow might be able to axisymmetrize the one - wave asymmetric structure of a typhoon and also to transfer the perturbation vorticity in the outer region inwards
主要結果可以歸納如下:在一定的參數范圍,圓形切變基流可以使初始一波非對稱結構軸對稱化,也可以使外區的擾動渦量向內傳播。Experimental investigation of relative eddy in a impeller passage by piv
研究葉輪軸向旋渦流分享友人