空化流 的英文怎麼說

中文拼音 [kōnghuàliú]
空化流 英文
cavitating flow
  • : 空Ⅰ形容詞(不包含什麼; 裏面沒有東西或沒有內容; 不切實際的) empty; hollow; void Ⅱ名詞1 (天空) s...
  • : Ⅰ動1 (液體移動; 流動) flow 2 (移動不定) drift; move; wander 3 (流傳; 傳播) spread 4 (向壞...
  1. The additional flow is formed by the device of dentoid baffle, and the application of the device of dentoid baffle cooperated with a stilling basin has been investigated by systematic model tests. based on the research results, the hydraulic problems such as the characteristics of hydrodynamic pressure and cavitation on the head of the denotid baffle, the properties of flow under the condition that the device of denotid baffle is used with a stilling basin, the hydraulic computation about a stilling basin, the estimation of energy dissipation and its various affection factors, the mechanism and effect of energy dissipation, and distributions of velocity and pressure and aerating concentration, etc, have been analyzed ; the method and step of hydraulic design of device of denotid baffle by which the additional flow is produced has also been proposed

    文中利用齒墩設施實現附加射,對齒墩設施與消力池聯合應用進行了大量的和系統的模型試驗,分析研究了中低佛勞德數條件下,齒墩墩頭的動水壓強及特性,齒墩設施與消力池聯合應用時的態特性,消力池的水力計算,消能量的估算及其各種影響因素,消能機理和效果,消力池內的速、壓強特性,摻氣濃度分佈等水力學問題,並提出了實現附加射齒墩設施的水力設計方法和步驟。
  2. Analyzing the physics structure of vorticity, divergence, vertical velocity, frontogenesis " function, apparent heat source and apparent moist sink etc. indicated the physics fields are favorable for the occurance of the heavy rain over changjiang - huaihe river basin where the physics values are well according to the heavy rainstorm positions ; the low level jet is closely subject to the moisture and the coupled system of the low and the upper level jetstreams induced the strongly " ascending motion ; the intensity of the frontogenesis varies with the development of the rainfall system and reacts the rainfall intensity

    主要分析了這次過程中的多種物理量,包括渦度、散度、垂直速度、鋒生函數、視熱源、視水汽匯等,對這一暴雨過程有了比較系統的認識。結果表明:在江淮域存在著有利於發生暴雨的物理量場配置,渦度、散度、垂直速度等物理量,與暴雨的落區都很吻合的;低的產生不僅有利於水汽的輸送,而且高低的耦合造成了有利於強上升運動的配置;鋒生強度隨著降水系統的發展變,並影響降水強度。
  3. 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

    超聲波由於其機理及對液體的變性影響等特性,在燃油霧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過程中逐步顯示出其優越性,但其具體的霧機理還需要做進一步的研究在氣泡霧噴嘴基礎加入懸臂式簧片哨,將超聲波與氣泡霧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以及液體粘度對霧質量的影響,並通過具體的實驗,根據實驗數據來討論霧質量隨各種結構參數運行參數的變規律,以便找到超聲霧的一些規律,豐富對超聲霧機理的研究,對超聲霧噴嘴的設計具有一定的指導意義。
  4. We can use the mm5 model in definite time, definite area weather forecasting. we conclude that : : the moving route of this necw in its developing progress was direct - south along latitude, the cold air is rough, and just this made the rough vertical velocity ; the necw southern moving and conflicting with the west pacification sub - tropical high makes rough jet steam. the plenty south - west warm and wet air made by the jet stream gave the rainstorm demanded vapor ;. the rough vertical velocity by jet stream is a main reason in this rainstorm ; the mm5 model uses four - direction analysis data as its input, this avoids some errors occurred in observe and transfer, thus made the result more useful

    綜合分析認為: ( 1 ) 、這次冷渦在其發生發展過程中,其移動路徑是沿經圈直線南壓,攜帶的冷氣勢力較強,形成槽后較強的垂直運動; ( 2 ) 、西太平洋副熱帶高壓偏北位置與東北冷渦南壓形成的急軸,把源源不斷的西南暖濕氣輸送到遼西地區,也就是急軸的左前方位置,為這次暴雨的產生提供了充足的水汽來源; ( 3 ) 、低不但為暴雨輸送水汽,其造成的較強的垂直環也是產生強降水的一個主要原因; ( 4 ) 、 mm5模式以四維同資料作為初始場,最大限度地避免了觀測誤差可能造成的積分不穩定,提高了模擬結果的參考價值。
  5. Botflies ( such as the one featured in these photos, the human botfly, or dermatobia hominis, commonly found from central mexico through to central america and south america ) are one of a number of insect species that lay their eggs on the exterior of other living creatures ( usually mosquitoes or flies ) ; when the eggs hatch, the larvae burrow into their " hosts " to feed ( breathing through the small burrow holes ) until they emerge to pupate into mature adult botflies

    上面的相來自宏都拉斯共和國一個偏僻的地區,一名五歲小孩患了內眼窩腫脹,由一隊動眼外科醫療隊拖手術時拍下.一個後期的馬蠅幼蟲的呼吸孔道被發現於前眼窩. (馬蠅主要生活于墨西哥中部以及中南美洲) ?們于其他動物身上產卵,當卵孵時,幼蟲就會穿入寄居體內(由小呼吸孔道呼吸) ,吸取營養直到成蟲
  6. In this thesis hydraulic experimental studies and theoretical analyses on the vortex - flow drop shaft were conduced and the following results were accomplished : ( 1 ) in the model test some hydraulic characteristics including the shape of air core in the center of the drop shaft, the radial distribution of water flow velocity and the distribution of pressure on the wall of the drop shaft were measured under the condition of high water head above 250m and large discharge above 1400m3 / s. ( 2 ) a kind of computational method for the spiral water flow in the air core region of drop shaft was discussed and applied and the results agree the experimental data well. ( 3 ) the total ratio of energy dissipation in the drop shaft can reach 90 % and the energy dissipation in every region was discussed quantitatively

    本文通過試驗研究與理論分析對旋式豎井泄洪洞應用於高水頭、大泄量情況時存在的一些水力學問題進行了研究和探討,取得以下主要成果:一、結合小灣工程導洞改建,對高水頭( 252m ) 、大泄量( 1400m ~ 3 s )條件下旋式豎井中的水運動特徵進行了比較全面的測量,包括腔形態、徑向速分佈及井壁壓強等;二、提出了豎井腔段螺旋水水力計算方法,其計算結果與實測值吻合良好;三、利用試驗與計算結果,對旋式豎井的消能機理進行了探討,對豎井各部分的消能能力有了總體認識;四、對豎井下部消力井的合理井深進行了優試驗研究,發現消力井合理深度為0 . 9d左右;五、通過試驗研究,歸納出豎井水總摻氣量估算方法,為導洞排氣方案的設計提供了參考依據;六、在高水頭、大量條件下,豎井腔段下部速很高,盡管水螺旋運動引起的離心力可以確保井壁壓強保持正壓,但數依然較低,因此豎井的蝕始終是工程界關注的重大問題。
  7. This paper attentatively studies the theory of traveling bubble cavitation noise emitted from high - speed underwater self - navigator of schiebe body

    本文針對回轉體形水下高速自主航行器產生的動泡類型的所輻射的噪聲理論進行了探索性的研究。
  8. It was through precise mathematical deduction, data imitation, and analysis to experimental data that this topic is studied. this dissertation is theoretically instructive and practically useful, to a certain extent, to the traveling bubble cavitation noise around a schiebe body

    全文通過嚴密的數學推導,模擬和實驗數據分析等方法實現對這一課題的研究,對于回轉體動泡類型的噪聲具有一定的理論指導意義和現實應用價值。
  9. Firstly it discusses the value, meaning, background and method of this topic. then it deducts the single - bubble sound pressure, spectrum of sound pressure, power spectrum. according to the real situation of traveling bubble cavitation noise around a schiebe body, the mathematical model of single - bubble collapse is selected, furthermore, the mathematical model of mass traveling bubbles without interference effect is established, and the multi - peaks and rebound phenomenon while bubbles collapse is also analyzed with statistical method

    首先論證了本項研究的意義,價值,背景和方法,然後推出了單泡輻射噪聲聲壓,聲壓譜和功率譜,針對回轉體動泡噪聲的具體情況,選擇了雙指數模型作為單泡潰滅的數學模型,進一步建立了無干涉條件下的群泡輻射噪聲的數學模型,並用統計的方法分析了泡潰滅時的多峰值和反彈現象。
  10. A kind of measurement was developed to measure the air concentration of water and the result showed the possibility of entrained air existing near the wall of drop shaft. that is to say, the wall of drop shaft may be protected by entrained air from cavitation damage to some extent

    本文設計了一種適用於近壁區水摻氣濃度測量的方法,對腔段水摻氣濃度進行初步測量,發現井壁附近水存在摻氣的可能,這對改善水條件能起到積極作用。
  11. The researches including discharge capacity, pressare properties, cavitation characteristics at some key positions, hoisting load of the gate, configuration of energy dissipator at the exit dentated - sill, and downstream scouring were performed by hydraulic model tests

    藉助系列水工模型試驗對水布埡放洞的泄能力、壓力特性及關鍵部位的特性、閘門啟閉力、出口鼻坎消能工體型及下游沖刷等進行了較深入的研究、分析。
  12. The operation measures for controlling over - filling ( over - emptying ) are feasible ; the hoisting loads of valve and miter gate are less than their design values respectively ; but, there exists cavitation phenomenon needed to pay attention to the first crossover culvert when the value is near and after whole opening

    控制超灌(泄)操作方式可行;閥門、人字門啟閉力均小於設計值;閥門接近全開至全開后,輸水廊道第一分口有現象。
  13. Due to the complexity of the inner structure of the cleaning valve, it may be create vortices, cavitate, water hammer, back water and so on

    由於清洗液閥門道的內部結構復雜,當體通過閥道時產生諸如旋渦、、水錘和死水區等水現象。
  14. Experiments on breaking rock with high - pressure cavitating water jets

    高壓水射破碎巖石的試驗分析
  15. It uses solar radiation to provide upward momentum to a mass of air, thereby converting the thermal energy into kinetic energy

    它利用太陽輻射作為動力,為動提供浮升力,將熱能轉為動能。
  16. A two - dimensional double diffusive laminar natural convection in rectangular enclosure is detailed analyzed. the results show that when the thermal and solutal buoyancies aid each other, the airflow consists of one main cellular structure and is steady, regardless of the relative strength variation between the heat and pollutant sources. there are multiple flow structures, however, according to the relative strength when the buoyancies opposing each other

    模擬結果表明雙擴散自然對系統的動與傳熱傳質特性完全是由離散熱源與污染源浮升力之間的相互作用關系訣定的:當離散熱源與污染源浮升力協同作用時,自然對呈比較穩定的單一動結構;而當熱源與污染源浮升力對抗作用時,自然對系統隨它們之間強度變呈現出多種動狀態。
  17. Kinetic theory governing equations for cavity flow

    用動理學方法推導空化流的控制方程
  18. Basically, the predicted cavitation phenomena coincides with those observed in the experiment for a corresponding model turbine, it indicates that the simulation can provide reference for the cavitation performance prediction of other turbines

    數值預測的空化流動現象與模型水輪機試驗中所觀察到的現象基本一致,說明數值模擬結果可為水輪機的性能預測提供參考。
  19. Numerical computation of steady natural cavitating flow based on transport equation cavitaion model

    基於傳輸方程模型的定常自然空化流場數值計算
  20. The main work in this paper includes three parts : the theory research on partially - cavitating and super - cavitating axisymmetric bodies, the numerical computations and experimental investigations on partially - cavitation and super - cavitation on axisymmetric bodies. after finishing the study of theory and experiment on the partially - cavitation and super - cavitation for axisymmetric body, i use the potential flow theory to build the mathematical model on the partially - cavitation and super - cavitation for axisymmetric body. many cavity wake models, such as pressure recovery close model, riabouchinsky model and re - entrant jet model, are studied seriously

    本文在深入研究了回轉體局部與超理論及實驗結果的基礎上,基於勢理論,建立了回轉體局部泡和超場的基本數學模型,通過對kinnas和fine 、 uhlman以及jiedang和gertkuiper等人基於二維水翼提出的壓力恢復閉合模型、鏡像板模型和回射模型等泡尾模型進行了逐一的研究分析,發現其中的壓力恢復閉合模型較適用於模擬回轉體泡尾部場,並選用此泡尾模型作為求解回轉體空化流場正問題與逆問題的數學模型的組成部分。
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