drag force of the flow 中文意思是什麼

drag force of the flow 解釋
憐曳力
  • drag : vt （ gg ）1 拖，曳；拖動，拖著（腳、尾巴等）；硬拖（某人）做（某事）[至（某地）]。2 打撈，（用撈...
  • force : n 1 力，勢。2 體力，氣力，精力，魄力。3 暴力，壓力；兵力，武力。4 〈pl 〉 部隊，軍隊，兵力。5 勢...
  • of : OF ＝Old French 古法語。
  • the : 〈代表用法〉…那樣的東西，…那種東西。1 〈用單數普通名詞代表它的一類時（所謂代表的單數）〉 （a） 〈...
  • flow : vi 1 流，流動。2 （血液等）流通，循環。3 流過；川流不息；（時間）飛逝；（言語等）流暢。4 （衣服、...
  1. Firstly, based on the present research all over the world, a 3d quasi - single phase model is built together with k - equations. the special feature of this model is taking account of the influence of interaction between liquid and gas, that is to say, the influence of interphase drag force, lifting force perpendicular to the relative velocity, virtual mass force and gas or liquid volume fraction in the fluid field have been considered. a 3d two - fluid model is also built in order to describe more accurately the fluid flow on distillation trays by comparing the computational results of quasi - single phase mathematical model with of two - fluid mathematical model

    本文在國內外已有的研究基礎上，首先建立了以k - （封閉模型為基礎的三維擬單相流模型，該模型的特點在於充分考慮了氣液兩相間相互作用的影響，即計入了相間曳力、橫向升力、虛擬質量力和氣、液相含率對流場的影響；並建立了塔板三維雙流體模型，主要目的是通過對比擬單相流數學模型、雙流體數學模型的計算結果，建立能夠準確描述塔板上流體流動的數學模型。
  2. According to dynamical characteristic of the bubble motion in the flow field, and under the assumptions of isothermal system without interior heat source, uniform bubble size, and ignoring surface tension, the mathematical expressions for interfacial momentum exchanges have been deduced which include drag, virtual mass force, and lift

    針對氣液泡狀流中氣泡運動力學特性，在系統絕熱、無內熱源、忽略表面張力、氣泡尺寸均一前提下建立了氣液相間曳力、虛質量力、升力的數學模型表達式。
  3. The mechanisms of flow - induced vibrations of the fluid - conveying pipes on offshore platform and in water are analyzed, the physical models and mathematical models of flows in pipes on offshore platform and in water are established, with the programs of numerical simulation, the flow of vibrating pipe, the force of flow - induced vibration in pipe on offshore platform and the lift and the drag of flow acting on the fluid - conveying pipe in water are solved, and the linear solution for equation of vibrating fluid - conveying pipe in water with the fixed supports in two ends is derived

    分析了海洋平臺及水下輸液管道的流體激振機理，建立了相應條件下的物理模型及數學模型，應用matlab軟體編制了計算程序，對海洋平臺輸液管道內流流場、管道所受流體激振力及水下輸液管道繞流受力（橫向升力及縱向阻力）分別進行了求解，並推得了兩端固支條件下水下輸液管道強迫振動方程的線性解。
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