氣泡流 的英文怎麼說
中文拼音 [qìpāoliú]
氣泡流
英文
bubble flow-
The same kind of reasoning can be used to explain vertical coalescence of bubbles in fluidized beds.
人們可用同樣推理解釋流化床中氣泡在垂直方向上的合併。A high-speed jet is formed in the bubble due to the convolution of the fluid on the boundary of the bubble.
由於在氣泡邊緣上流體的迴旋,在氣泡中形成了高速射流。Influences of air liquid mass flow rate on spray combustion produced by effervescent atomizer
氣液質量流量比對氣泡霧化噴嘴燃燒特性的影響As opposed to gas-liquid systems, there is an interchange of gas between bubble and continuous phase in fluidized beds.
與氣-液系統不同的是,在流化床中氣泡和連續相之間有氣體交換。Ultrasonic has being attracted much attention gradually in fuel atomization because of some specialities of cavitation and infection on liquid flow. in the course of atomization of pitchy oil, especially, does it show greatly its advantage, but its material atomizational mechanism need research ulteriorly. the primary content of this thesis is about adding cantilever reed to effervescent atomizer so as to combine ultrasonic and effervescent. this thesis has discussed ultrasonic some mechanism, ultrasonic dynamical procreator, effervescent and liquid mucosity infection on atomization, at the some time we make some experiments and discuss atomization rule following some machinery parameter and run parameter so as to find some rule about ultrasonic atomization and to rich the research of ultrasonic atomization mechanism. all that will be beneficial to the design about ultrasonic atomization atomizer
超聲波由於其空化機理及對液體的流變性影響等特性,在燃油霧化燃燒中逐步引起人們的重視,尤其在重渣油等高粘度液體的霧化過程中逐步顯示出其優越性,但其具體的霧化機理還需要做進一步的研究在氣泡霧化噴嘴基礎加入懸臂式簧片哨,將超聲波與氣泡霧化相結合是本文討論的主要內容本文從研究超聲波的一些機理入手,討論了超聲動力發生器氣泡霧化以及液體粘度對霧化質量的影響,並通過具體的實驗,根據實驗數據來討論霧化質量隨各種結構參數運行參數的變化規律,以便找到超聲霧化的一些規律,豐富對超聲霧化機理的研究,對超聲霧化噴嘴的設計具有一定的指導意義。By arrangement of the control channels through which the hydraulic fluid flows from the discharge chamber into the oil reservoir, this allows any gas bubbles being released from the hydraulic fluid during the suction stroke to be expelled into the oil reservoir
通過液壓油經控制通道由排出腔流入油槽的這種布置,使得任何在吸入沖程從液壓油中釋放出來的氣泡都被排到油槽中。Wheat flour triticum aestivum l. - physical characteristics of doughs - determination of rheological properties using an alveograph
小麥麵粉.生面團的物理特性.使用氣泡儀測定流變性能It is studied that the formation mechanism of taylor bubble and its control method in gas - liquid two - phase flow, which affects the pressure balance and mechanical driving efficiency in the flow of petroleum engineering. experiments show that the formation of taylor bubble in gas - liquid two - phase flow is due to the intensive congregation and amalgamation of small bubbles driven by void fraction waves and that the highly turbulent flow is able to restrain this formation. thus, the flow regime transition may be checked by increasing the flow turbulence and controlling the disturbed frequency
對大管徑氣-液兩相流動中嚴重影響壓力平衡與機械驅動效率的段塞流生成機制和控制方法進行了研究,實驗證明段塞流的形成是由於空隙率波的大幅度增長使氣泡高度集中,並形成聚並所致。強湍流運動可以抑制taylor泡的形成。因此,通過強化湍流或控制擾動頻率可以對氣泡聚並起明顯的抑制作用。Surface must be smooth, no copper stain 、 shrinkage 、 flow mark 、 bubble etc
表面光潔、色澤均勻,無縮癟、流痕、氣泡等缺陷。The innovation is that a ring bar sprayed bubbling gas distributing device is installed at the bottom of the tower, which has novel effects of leveling off gas and decompressing, cooling and dust removal, highly effective absorption, hydraulic stiring and so on at the same time
其創新點是在塔的下部嵌入了一個環柵噴射鼓泡式進氣裝置,其新穎之處體現于:煙氣穩流減壓,冷卻除塵,高效吸收,氣力攪拌等功能可在環柵通道內一氣呵成。Moreover, the resulted prediction model of foam size of the closed cell aluminum foam was verified by comparison to the experimental results from the foaming process at different foaming conditions, and the predicted bubble diameter is in good agreement with the experimental ones, the relative error distributes between - 5. 04 % and 6. 32 %
當入射空氣的壓強、氣流量,液面高度,出氣孔直徑增大時,氣泡直徑隨之增大;當出氣孔數量,液體粘度增大時,氣泡直徑減小,表面張力對氣泡直徑的影響可以忽略不計;靜態條件下液體表面氣泡直徑的預測值和實驗測量值符合得較好,相對誤差分佈在- 5 . 04 % ~ 6 . 32 %之間。At first, bubble flow image is acquired using laser and incandescence lamp respectively as light source and using ccd. according to different optics - dispersion character, threshold segmentation method is proposed to identify gas from the gas - water flow, which make steadfast base for further calculate void fraction. the precision of threshold directly affect the calculate precision of void fraction
文中分別採用激光片光源和影視燈照明,採用逐行掃描數字ccd攝像機獲取氣泡的流動圖像;根據氣泡和水對光的反射特性不同,提出採用閾值法識別圖像中的氣泡和水,從而為進一步計算摻氣濃度打下堅實的基礎。A mathematical model was proposed to compute the interfacial area on the valve tray
同時根據湍流液體中氣泡變形與破碎的機理,建立了計算浮閥塔板相界面積的理論模型。The dynamic behavior of bubbles in the turbulent liquid is analyzed theoretically, the mechanism of bubble deformation and breakage is explored on the basis of kolmogoroff ' s isotropic turbulence hypothesis, and the mathematical model for predicting gas - liquid interfacial area is proposed
同時,還從理論上分析了湍流液體中氣泡變形與破碎的機理,提出了預測氣液相界面積的多相湍流動力學模型。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。Established 20 years ago, the chu - lung resort was wulai s first dedicated hot springs hotel. the men s pool faces an uninhabited hillside and the yenti reservoir, while the women s pool is located on the side of the ravine. it features hot, medium and cold baths, with water massage sections and baths scented with tea, lemon and other fragrances
半露天的男性養生池,面對一片無人的山林,還有堰堤水庫澎湃雄壯的瀑布水流而半露天的仕女池則在南勢溪洪荒峽邊,擁有冷中高溫三種不同溫度的溫泉池,還有具按摩放鬆作用的水流區氣泡區,和茶浴檸檬浴等不同味道湯池。The difficult-to-describe flow of gas, with its large deviations from plug flow and the bypassing of solids by bubbles, represents an inefficient contacting system.
氣體流動狀態難以描述,與活塞流離較大,由於氣泡產生而使固體顆粒發生溝流,這些都表示接觸效率降低。Numerical results show that the bubble concentration distribution can be predicted by using the two - way coupling of the fluid and the bubble motion, and adding the wall lift force into the bubble motion equation, and the fluid velocity, turbulence intensity and shear stresses modified by the bubble motions can also be revealed
數值模擬結果表明,通過加入壁面升力和採用雙向耦合方法,可以較準確地預測氣泡濃度分佈和揭示氣泡流動對流體湍流結構的影響。The experimental results show that the method is effective to identify the flow patterns of bubbly, plug, stratified, wavy, slug and annular in a horizontal pipe. the identification accuracy is shown as follows : bubbly flow is 93. 3 %, plug flow is 85. 3 %, stratified or wavy flow is 97. 3 %, slug flow is 98. 6 %, and annular flow is 92. 7 %. an estimation of the process time is 22 frame / s
實驗結果表明,該方法能自動有效地識別水平管道內的氣泡流、塞狀流、層狀流、波狀流、彈狀流和霧環狀流等基本流型;識別準確率如下:氣泡流為93 . 3 ,塞狀流為85 . 3 ,分層流為97 . 3 ,彈狀流為98 . 6 ,霧環狀流為92 . 7 ;識別圖像速度約為22幀秒,適合於在線實時識別兩相流流型。The experimental results show that the fuzzy neural network can accurately identify the flow patterns of slug, plug and bubbly in a horizontal pipe
實驗結果表明,利用該模糊神經網路能準確地識別彈狀流、塞狀流和氣泡流等基本流型。分享友人