進口導葉 的英文怎麼說
中文拼音 [jìnkǒudǎoyè]
進口導葉
英文
entry guide vane-
Tea - brokers in mombasa, kenya ' s second city, whose port serves most of east africa, say that another month of instability could ruin the city ' s regular auction of one the country ' s main exports
東非大多國家的貨物進出口都依賴與肯尼亞第二大城市蒙巴薩,該港市的茶商們說道,經濟的不穩定再持續一個月將勢必會導致茶葉的售價一落千丈? ?而茶葉是肯尼亞的主要出口貨物。The performance of the centrifugal compressor at different diffuser stagger angles and different inlet guide vane ( igv ) prewhirl angles are measured
摘要對擴壓器進口不同安裝角和進口導葉不同預旋角匹配下離心壓縮機的性能進行了實驗研究。The investigation shows the performance gets quite insensitive to the prewhirl angle of igv as the stagger angle of diffuser vane is reduced to the minimum 7 ; the combination of these two stators enables to greatly improve the compressor efficiency over the entire operating rage, the maximum efficiency with the combined adjustment reaches 86. 0 %, higher than that in alone adjustment of igv or diffuser vanes by 2 %
研究表明:擴壓器進口安裝角最小值為7時,壓縮機性能對進口導葉預旋角不敏感;採用不同的擴壓器進口安裝角和不同進口導葉預旋角匹配調節時,壓縮機所能達到的最高效率為86 . 0 % ,比單獨調節進口導葉預旋角或擴壓器進口安裝角所能達到的效率高2 % 。Chung hua pulp co. adopt the imported hardwood chips as the main raw material, we take advantage of the fiber character of different wood species to manufacture a variety of paper suitable for use of culture, sanitation, industry, as evcalyptus, low vessel, picking pulp, bulky pulp, high opacity pulp
採用進口闊葉樹木片為主要原料,利用不同樹種之纖維特性來製造適合不同紙種之紙漿,如尤加利漿,低導管剝離漿,高松度漿,高不透明度漿等,使華紙之紙漿可適用於文化用紙,衛生用紙,工業用紙. .等Variable inlet guide vane centrifugal fan
進口可調導葉離心式風機A kind of non - fourier heat conduction problem under isothermal inlet condition
一類等溫進口條件下的非傅立葉導熱問題To meet the needs for wider surge margin of the turbofan engine, a new model was developed to predict the characteristics of the fan / high pressure compressor and turbine in this thesis. several ways, including, variable inlet guide vanes of the fan, variable guide vanes of the high pressure compressor, the variable inlet area ratio of the mixer and the nozzle areas, were presented to enlarge the surge margin of the turbofan engine. meanwhile, a method of combined variable geometries for optimizing controls of inlet guide vanes of the fan, guide vanes and the first two stators of high pressure compressor, area ratio of mixer and noz zle areas was established
為了滿足下一代作戰飛機對推進系統的性能和穩定性要求,本文建立了壓縮系統特性和渦輪特性的新模型,並分別採用改變渦扇發動機風扇進口導流葉片、壓氣機導流葉片和前兩級靜葉片、混合室進口處內、外涵面積比和尾噴管面積,研究了其對發動機性能和穩定性的影響,進而得出了渦扇發動機變幾何擴穩的方法,為發動機變幾何擴穩研究打下理論基礎。Air inlet guide vane assembly
空氣進口導流葉片裝置For shutters, the results show : 1 ) according to the formula p =, the theoretical value of is calculated by the effective velocity of the flow, and its engineering value is calculated by the arriving velocity of the flow, the relationship between the theoretical value of and its engineering value is 2 ) the smaller value of declining angle will result in the smaller pressure loss and smaller outlet velocities. as a result, the declining angle of 30 擄 or less is recommended in some places which need small wind velocity, such as broadcasting studio and library, and the declining angle of 45 擄 or less is recommended in places which need big wind velocity, such as cinema and office ; 3 ) the larger value of ratio between the wide of the shutter b and the space between two boards h ( b / h ) will result in the larger pressure loss and smaller outlet velocities. the range of b / h from 0. 8 to 2. 0 and the optimum value 1. 2 is recommended ; 4 ) the range of b from 10 mm to 50 nun and the optimum value 40 mm is recommended ; 5 ) the proper thickness of the boards 8 of the shutters is 1. 5 mm ; 6 ) cuneiform boards should replace the rectangle inlet boards of the shutters in order to obtain better ventilation
數值模擬採用fluent軟體,計算結果用excel進行處理,通過對大量數值工況進行數值模擬計算,結果表明:對于單側百葉風口,計算表明: 1 )對于公式p = ( ~ 2 ) 2 ,的理論計算值中定義為流體流經百葉風口內部時的速度,即有效速度,而工程上常使用流體的來流速度來計算,計算表明,的理論計算值與工程應用值的關系為( _ (理論) ) ( _ (工程) ) = 0 . 813 ; 2 )當來流速度一定時,擋板傾斜角度越小,壓力損失越小、出口速度越小;因此在要求進口風速比較小的場所,如播音室、圖書館等,宜採用擋板角度30的百葉風口;在要求進口風速比較大的場所,如電影院、辦公室等,百葉擋板的角度應選45 ; 3 )當來流速度一定時,百葉擋板的擋板寬度b與擋板間距h的比值b h越大,壓力損失越大,出口速度越小,計算表明,鑒于壓力損失、出口風速、板間形成渦流區的大小,百葉擋板的b h值取0 . 8到2 . 0之間, b h = 1 . 2為最佳值; 4 )當來流速度一定時,在計算的條件下,當百葉擋板寬度b = 40mm時,百葉擋板的阻力系數最小,考慮到渦流區等的影響,建議選用10mm b 50mm的百葉擋板;西安建築科技大學碩士學位論文5 )百葉擋板的厚度取為1 . sinln為好; 6 )百葉擋板的入口側可選用具有傾斜度的楔形擋板來代替矩形擋板,利用其較好的導流作用,可得到更好的出流效果。Also, the chamfer of the stay vanes entrance and the surface roughness of the flow channel were optimized by the numerical investigations
亦對固定導葉入口沖角、渦殼壁面粗糙度對流動的影響進行了定量分析。分享友人