渦流制動法 的英文怎麼說
中文拼音 [guōliúzhìdòngfǎ]
渦流制動法
英文
eddy current braking-
5. according to the requirement of amt start up experiment, using dynamic link library to program for different kinds of data acquisition card and transferring data between pc and multi scm. in this way data can be acquired successfully and engine throttle 、 clutch locking speed and eddycurrent dynamometer torque were controlled by pc programs
根據試驗要求，採用動態鏈接庫的方法對不同數據採集卡進行混合編程，順利地採集參數和控制發動機節氣門開度及離合器結合速度，利用上下位機多機通信，使上位機控制電渦流測功機，實現了模擬加載。For the present two les models, adopting the subgrid eddy viscosity concept and introducing the transport equation of turbulence energy k, the subgrid scale turbulence is parameterized by the turbulence energy k and the length scale of turbulence / ( k - 1 model ). in addition, vegetation is considered as an internal source of resistant force and turbulence energy
在應用大渦模擬方法求解數值計算模型控制方程時，亞網格雷諾應力項沿用了亞網格渦粘性系數思路，引入亞網格紊流脈動動能k的輸運方程，建立了關于亞網格紊流脈動動能k和紊流特徵長度l的k - l模型求解。The discontinuous phase method combined with eddy current sensor is introduced to acquire blade dynamic signal 。 the author designed the program of computing blade vibration parameters and have made computer simulation ， so we can get blade amplitude and frequency
提出採用間斷相位法和電渦流傳感器結合來獲得葉片的振動信號，編制了測量葉片振動參數的計算程序，並進行了計算機模擬模擬，得到了葉片振動振幅和頻率。A new aerodynamic design system developed by authors for draft fan with enhanced efficiency, suppressed noise, enlarged flux and high load. the new design system features : a twist regulation for vortex control is employed in designing to lessen the secondary flow loss in the blade tip and hub ; the feasibility and high efficiency of this procedure has been verified by the tests of the prototype fan ; a new computer - aided 3d blading is used to optimize the blade ; numerical inverse checking is adopted to enhance accuracy in designing and cut down the period of the designing and production. this design system can make the optimized blade with " forward inclination ", " inclining sweep ", " bending sweep ", to minimize the various secondary flow losses, to expand the steady working range of the fan, and to suppress the aerodynamic noise source
本文通過對一種新型高性能礦用局部通風機的設計、製造及試驗全過程的綜述，展現了新的先進設計體系在民用通風機上的成功運用，其研製特點是： （ 1 ）在葉片氣動設計中為了降低葉根及葉尖區二次流損失，採用可控渦扭向規律設計，樣機實測的高性能驗證了這種方法的可行性和高效性； （ 2 ）在設計方法中採用較精確的數值反驗算，獲取最優設計方案，大大提高設計的準確性和成功率，並縮短了設計試制周期； （ 3 ）在設計過程中發展了計算機輔助三維葉片造型新方法，可以根據設計需要簡便快捷地對葉片進行「前傾」 、 「傾掠」或「彎掠」造型，這些造型對減小各種二次流損失、擴大穩定工況范圍和控制葉輪機氣動噪聲源起到了非常好的作用。Abstract : a new aerodynamic design system developed by authors for draft fan with enhanced efficiency, suppressed noise, enlarged flux and high load. the new design system features : a twist regulation for vortex control is employed in designing to lessen the secondary flow loss in the blade tip and hub ; the feasibility and high efficiency of this procedure has been verified by the tests of the prototype fan ; a new computer - aided 3d blading is used to optimize the blade ; numerical inverse checking is adopted to enhance accuracy in designing and cut down the period of the designing and production. this design system can make the optimized blade with " forward inclination ", " inclining sweep ", " bending sweep ", to minimize the various secondary flow losses, to expand the steady working range of the fan, and to suppress the aerodynamic noise source
文摘:本文通過對一種新型高性能礦用局部通風機的設計、製造及試驗全過程的綜述，展現了新的先進設計體系在民用通風機上的成功運用，其研製特點是： （ 1 ）在葉片氣動設計中為了降低葉根及葉尖區二次流損失，採用可控渦扭向規律設計，樣機實測的高性能驗證了這種方法的可行性和高效性； （ 2 ）在設計方法中採用較精確的數值反驗算，獲取最優設計方案，大大提高設計的準確性和成功率，並縮短了設計試制周期； （ 3 ）在設計過程中發展了計算機輔助三維葉片造型新方法，可以根據設計需要簡便快捷地對葉片進行「前傾」 、 「傾掠」或「彎掠」造型，這些造型對減小各種二次流損失、擴大穩定工況范圍和控制葉輪機氣動噪聲源起到了非常好的作用。Study on electromagnetic mechanism in eddy current brake based on analytical method
基於解析法的渦流制動電磁機理研究The paper proves that in the 2d non - linear case, the coulomb gauge is been meet naturally. in the paper, the second - order isoparametric fem is adopted in the non - linear transient magnetic field simulating excited by current source and the results of transient field and static field solved by the second - order isoparametric and linear fem are compared and analyzed, besides, the effect of the eddy currents in the magnetic materials of the different conductivity is analyzed, it is obtained that the magnetic material of high magnetic conductivity and low loss should be chosen in designing of pma
文中採用二次等參元有限元法推導出在電流源激磁下的非線性瞬態磁場的計算方法和編制了相應的計算程序，並採用二次等參元有限元法和雙線性有限元法分別對瞬態場和靜態場進行了計算，並對計算結果進行了誤差分析，此外，還對不同電導率的導磁材料中渦流產生的影響進行了分析，得到結論設計永磁操動機構時，應選擇導磁性能好，損耗低的導磁材料。分享友人