viscous drag 中文意思是什麼
viscous drag
解釋
粘性摩擦-
The results show that, comparing with the gas pressure drops calculated by the modified ergun equation, in the cases of the gas reynolds number is small, due to the presence of the dead space, the observed p in the experiments are bigger than that obtained by calculation, and when the gas reynolds number is large, because of the small interfacial viscous drag - force between gas and liquid, the p observed are smaller than that obtained by calculation
結果表明在氣相雷諾數較小時，由於停滯孔隙率的存在，實測壓降值比修正厄根方程計算的值大；氣相雷諾數較大時，氣液界面上產生的粘性曳力較小，實測壓降值比修正厄根方程計算的值小。 -
Individual dislocation - solute interactions are extrapolated to ensemble effects, including " upper yield points " during mechanical testing, serrated flow, strain aging, and viscous drag
由個別的差排溶質交互作用推衍到整體效應，包含機械測試時之上降伏點、鋸齒狀應力-應變行為、應變時效及黏滯力。 -
Shan - tarng chen, shu - chin wang, experimental determination among available theories describing the drag force exerting on steel spheres and cu and al cylinders moving in a viscous fluid. physica scripta, vol. 70, 349 - 353, 2004
陳美玲、王淑琴、林淑靜、黃平屯， 2004 。 」國二學生設計與進行開放性實驗的表現之個案研究?以探究影響浮力大小的因素為例」 。 2004年物理教育學術研討會。 -
Based on prandtl ' s momentum transportation, this paper calculates in detail the physical quantities such as eddy viscosities, and ratio of eddy viscosity to motion viscosity, total stresses with respect to relative position in three regions of viscous sub - layer, buffer layer, and main turbulent stream for non - newtonian fluid flowing turbulently in ducts, which according to karman ' s three layer models and measurement of fluid parameters in evaluation apparatus, discusses the influence of polymer drag reduction on flowing properties of non - newton fluid, analyzes quantitatively principle of turbulent reduction phenomenon and condition of increasing reduction rate
摘要以普蘭德動量傳遞理論為基礎，按照卡門的三層模型，通過室內模擬環道用0號柴油及加入減阻劑在圓管內的流動參數的測定，計算了非牛頓型流體管內湍流邊界層的層流內層、過渡層、湍流中心的渦流粘度，渦流粘度與運動粘度比、總應力隨相對位置的變化等定量參數，探討了高分子減阻劑對非牛頓流體流動特性的影響，對湍流減阻現象的機理與增大減阻率的條件進行了定量分析。 -
Low viscous drag and high - speed capability : the low viscous drag of the magnetic fluid, and non - contacting seal configuration of the magnetic fluid feed through assure its extremely smooth operation and its high - speed capabilities
低阻尼和高速旋轉能力：磁性流體極低的粘滯阻力和磁性流體進行給裝置無需接觸密封圈的結構，決定了它的穩定操作和高速轉動。 -
Therefore this approach has become the highlight of the cfd field, and has received much attention. based on this optimization design theory, this thesis deeply studies some kinds of aerodynamic design problem in inviscid and viscous flow, such as aerodynamic inverse design and drag reduction problems. at the same time, the aerodynamic design optimization programs have been developed successfully
基於該設計方法的研究價值和應用前景，本文通過應用控制理論的優化設計方法，對無粘性流動和粘性流動情形下不同類型的氣動設計問題進行了深入研究，如反設計、減阻問題研究，成功發展了相應的氣動外形優化設計程序。
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