減阻添加劑 的英文怎麼說
中文拼音 [jiǎnzǔtiānjiājì]
減阻添加劑
英文
drag reducing additive-
Emhydr hr oils are based on high paraffin lubricant stocks compounded with rust and oxidation inhibitors and anti - foam additive to lubricate in hydraulic systems, plain and anti - friction bearings, enclosed gear cases etc. that do not require anti - wear or extreme pressure properties
Emhydr hr是以石蠟基基礎油摻配防銹、抗氧化與消泡添加劑製成，適用於工業液壓系統、減阻與平軸承、密封式齒輪等，以及不須抗磨與極壓性能的潤滑系統。The experimental results of the flow characteristics of the mmc heat sink indicate that the critical reynolds number signifying the transition from laminar flow to turbulent flow is in advance ; under the same experimental conditions, the variation in entrance direction of the microchannel inlet and outlet has little effect on the microchannel ; the experimental values of the friction factor of the de - ionized water in a microchannel agree well with those calculated using the theoretical laminar formula ; furthermore, a comparison of the experimental results and simulation results shows that navier - stokes equation and rng - turbulence model can be used to model the laminar and turbulence flow regions in a microchannel ; meanwhile, the correlations of the flow resistance in the turbulent flow regions for the de - ionized water as the working fluids are obtained from experiments
對歧管式單通道熱沉流動特性的研究結果表明，微通道內流體流態由層流向紊流轉變的臨界雷諾數提前;改變流體的進出口方向對熱沉總壓降造成的影響很小;摩擦系數的實驗值與理論值較接近;數值模擬結果能夠與實驗值較好吻合;並由實驗給出了紊流區流動阻力的實驗關聯式。此外，選用十二烷基硫酸鈉（ sodiumdodecylsulphate ， sds ）以及烷基多糖苷（ alkylpolyglycoside ， apg ）作為減阻添加劑，研究了表面活性劑添加對微通道流動特性的影響。The construction proposal recommended by this research project suggests a gradual increase in installation of boosting pump and tank, in conjunction with the use of dra as an expedient be utilized to accomplish the ever increasing throughput
課題研究所提出的管道建設方案，主張以不斷增設增壓站、儲罐、輸送工藝中採用添加減阻劑的方式，來滿足輸送量日益增多的需要。Moreover, this paper investigates the influences of surfactant aqueous solutions on flow characteristics of a mmc. sodium dodecyl sulphate aqueous solution and alkyl polyglycoside aqueous solution are used as working fluids. the experiment results indicate that the drag reduction depends on flow velocity and temperature ; the drag reduction effects aren ’ t very obvious in laminar flow region, but when fluid enter turbulent flow region, the drag reduction increase notably, the drag reduction effects
研究結果表明，阻力減小率（ dragreduction ， dr ）與流速和溫度有關;層流區內表面活性劑的減阻效果不是特別明顯，但進入紊流區后減阻效果開始增強，尤其進入旺盛的紊流區后減阻效果大大增強;溫度提升也可增加dr ，但在溫度較高時添加sds后減阻效果的改善卻不及apg 。分享友人