摻氣 的英文怎麼說

中文拼音 [chānqì]
摻氣 英文
aerate
  • 摻 : 摻動詞[書面語] （持; 握） hold
  • 氣 : Ⅰ名詞1 （氣體） gas 2 （空氣） air 3 （氣息） breath 4 （自然界冷熱陰晴等現象） weather 5 （氣味...
  1. Optimum shape of the prototype spillway chute aerator

    摻氣減蝕設施體型優化研究
  2. 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流，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空化特性，齒墩設施與消力池聯合應用時的流態特性，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，消力池內的流速、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流齒墩設施的水力設計方法和步驟。
  3. The water current flows over the top of the dentoid baffle to the hydraulic jump as additional momentum. while it is cooperated with a stilling basin, the flowing condition emerged in the basin may be improved greatly and the length and downstream water depth required by the basin can be decreased to a great extent. such an appliance may be also used to solve the problems of insufficiently dissipating water flow energy and aerating flow, which are often faced with those hydraulic engineering constraction as acted by high waterhead, great specific discharge and low froude number

    本文通過齒墩頂部的擴散水舌所形成的附加射流，從上部射入水躍，即可改善消力池內的水流流態，又可降低第二共軛水深，減小水躍長度，增進水躍消能效果，同時還能解決大單寬、低佛勞德數條件下摻氣和消能不足的問題，試驗證實它是一種安全、經濟的消能工。
  4. 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流式豎井泄洪洞應用於高水頭、大泄流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、結合小灣工程導流洞改建，對高水頭（ 252m ） 、大泄流量（ 1400m ~ 3 s ）條件下旋流式豎井中的水流運動特徵進行了比較全面的測量，包括空腔形態、徑向流速分佈及井壁壓強等；二、提出了豎井空腔段螺旋水流水力計算方法，其計算結果與實測值吻合良好；三、利用試驗與計算結果，對旋流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化試驗研究，發現消力井合理深度為0 . 9d左右；五、通過試驗研究，歸納出豎井水流總摻氣量估算方法，為導流洞排氣方案的設計提供了參考依據；六、在高水頭、大流量條件下，豎井空腔段下部流速很高，盡管水流螺旋運動引起的離心力可以確保井壁壓強保持正壓，但空化數依然較低，因此豎井的空化空蝕始終是工程界關注的重大問題。
  5. 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流摻氣濃度測量的方法，對空腔段水流摻氣濃度進行初步測量，發現井壁附近水流存在摻氣的可能，這對改善水流空化條件能起到積極作用。
  6. 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。
  7. The aerated behaviours in cavitation region of high velocity flow through the non - circulating water tunnel are investigated by using the advanced experimental facilities in the hydraulics laboratory at zhejiang university of technology

    摘要本文用先進的量測儀器在浙江工業大學水力學實驗室直流式水洞中分別對高速水流空化區、空蝕區的摻氣特性進行了較為系統的試驗研究。
  8. The ratio of the length to the depth of scour hole decreases with the increasing scour depth, in spite of the reason is the increase of the air concentration, the decrease of the jet velocity or the decrease of the jet thickness. 5. governing equations of the aerated jet flow are established

    摻氣對沖坑形態並沒有實質性的影響，沖坑的寬深比隨沖坑深度的減小而增大，無論造成沖坑深度減小的原因四） 1大學i學博士學位論文是摻氣、降低流速還是減小入射水舌厚度，其變化規律都可用相同的直線關系表示。
  9. Based on experimental result of energy dissipation and scour protection for downstream of spillway at yu jian kou power station, this paper discusses the flow characteristics, aerated characteristics of flaring gate pier for low dam pivot, the influence on pressure of dam surface and the result of energy dissipation for flaring gate pier. it is put forward to be an available method to solve the problems of energy dissipation and scour protection for depth of covering strata, poor geologic condition and weakness of resistance to scour capability under reasonable use of flaring gate piers and auxiliary dissipaters. thus, a new method is obtained for release of floodwater and energy dissipation of low dam pivot which are provided with low water head, great unit discharge and low froud coefficient. it may be used for reference for design and test workers

    結合魚劍口電站壩下消能防沖試驗研究成果，對低壩樞紐寬尾墩的水流特點、摻氣特性、寬尾墩對大壩泄流能力和壩面壓力的影響以及寬尾墩的消能效果等問題進行了初步探討，提出了合理地使用寬尾墩結合輔助消能設施可有效地解決壩下覆蓋層深，地質條件差，抗沖能力弱的低壩樞紐的消能防沖問題，從而為具有低水頭，大單寬流量，低佛氏數特點的低壩樞紐泄洪消能開辟了一條新途徑，可供有關低壩樞紐設計與試驗工作者借鑒與參考
  10. The content in this paper is preparatory attempt that combines image technique and gas water field measurement technology. this research make strong base for the further application of image technique in two phases flow of gas - water and has significant learning and practicable value

    研究成果為今後進一步深入研究和推廣計算機圖像處理技術在水氣兩相流測量中的應用，打下了有力的基礎;對提高水流摻氣濃度的測量水平和精度，進而提高水力模型試驗水平、滿足工程設計要求等都具有學術意義和重要實用價值。
  11. Thus the areas of the overlapping regions are compensated efficiently and the accuracy of measurement is highly improved. the volume of the bubbles can be estimated on the bubbles " area information, and a genetic algorithm ( ga ) based method is used to match and track bubbles in the image sequences, which solve tracking problem under complex conditions efficiently, such as some bubbles may have kinetic occlusion and crossover, some newly generated bubbles may entered into flow field and run away. a smooth kinetic locus is obtained by fitting the discrete centroids with a cubic spline function and at the same time the visual measurement is realized

    根據氣泡在圖像平面中的面積估計氣泡的體積，並對流場中的所有氣泡採用遺傳演算法進行最佳的匹配跟蹤，有效地解決了氣泡群在流場中出現如遮擋、交又、新它『出現、逃逸等復雜情況下的準確跟蹤，並採用三次樣條插值方法對離散的質心點軌跡進行擬合，得到氣泡在流場中平滑的運動軌跡，從而實現了摻氣水流特性的可視化測童。
  12. Based on image process, a new method is proposed to measure void fraction without contact. this method breaks through the traditional point measure and sensor technology

    本文突破了點測量和機械探頭傳感器等傳統的摻氣濃度測量方法，採用非接觸測量法，首次將計算機圖像處理技術應用於水流摻氣濃度的實測。
  13. In order to increase the energy dissipation of stepped spillway at iarge unit discharge, the integhty dissipater of aerated splitter pier and steppe characteristics is studied. because of verticaj diffhaion now by aerated splitter and impachng steppe 3 by drop flow, the air concentration and the energy dissipation efficiency are greatly increased ; the potentiality of cavitations is decrease. in special at large unit discharge, this effect is more obvious

    摻氣分流墩的增加，明顯地改善了階梯面上的壓強分佈，消除或減小了階梯凹角內和立面上部的負壓；由於摻氣分流墩使水流縱向擴散以及挑流落下后在階梯上的撞擊，使水流的摻氣濃度和消能率都得到較大的提高，降低了階梯面空蝕的可能性，特別是在大單寬流量時，這種效果更為明顯。
  14. This project comes from the national fund of natural science ( no. 50079020 ), whose aim is to study the measurement of the characteristic of aerated water flows by image processing

    本課題來源於國家自然科學基金項目（ no . 50079020 ） ，使用圖像測量技術對摻氣水流的特性的測量方法進行研究。
  15. The results show that the correlation dimensions are different in different current conditions. it is indicated that sediment - laden and aerated flows are not completely stochastic, possessing its intrinsic order

    結果表明，不同水流狀況具有不同的關聯維數，含沙摻氣水流運動並非完全隨機的，而是具有內在有序性。
  16. Recently, with the development of computer techniques and image processing, image measurement, as an un - intact lossless detection method, has been paid more attention by most researchers during the study of characters of aerated water flows

    近年來，隨著計算機技術和圖像處理技術的蓬勃發展，圖像測量作為一種非接觸的、無損的測量方法，在摻氣水流特性的研究中受到廣大科研工作者的青睞。
  17. The definition and calculation of fractional dimension is introduced briefly. the pressure fluctuation signals are processed by reconstructing the phase space for sediment - laden and aerated flow. the correlation dimensions are calculated for sediment - laden flow, clear water and aerated flow

    簡要地介紹了分維的定義和計算，運用相空間重構法對含沙摻氣水流脈動壓強信號進行處理，計算了渾水、清水、摻氣三種不同水流狀況的關聯維數。
  18. Because the bubbles and water are both colorless and transparent in aerated water flows, the contrast of the captured images is low, and uneven illumination exists. two bubbles extraction methods are proposed to eliminate the un - balance of illumination and higher accuracy bubble extraction is obtained

    由於摻氣水流中的氣泡的和水都是無色透明的，這使得拍攝到的氣泡圖像存在對比度低，並且存在光照不均的影響，為了解決光照對分割結果的影響，達到高精度提取氣泡的目的，本文提出了兩種圖像分割方法。
  19. The fundamental theory and equations for the pressure fluctuation are described and the wall pressure fluctuation is measured. based on the experiment data, the characteristics of pressure fluctuations are analyzed in the three - phase flow of water, air and sand. the effects of air concentration and sediment content on the amplitude and frequency of pressure fluctuations are discussed

    建立了多相流壓強脈動基本方程，闡述了水流脈動壓強基本理論，分析了壓強脈動機理；根據試驗數據，探討了水、氣、沙三相流體的壓強脈動特性，初步得到了高速含沙摻氣水流脈動壓強的幅值特性與頻域特性；提出了脈動壓強強度系數、脈動壓強極差系數與含沙量、摻氣濃度的關系。
  20. The turbulent characteristics of high - velocity sediment - laden and aerated flow are more other than the clear water flow of single - phase and current of low speed. in a special circulating system with high velocity flow, some flow parameters such as boundary shear stress and pulsation pressure are measured. an investigation is made on the turbulent characteristics of the three - phase flow of water, air and sand

    本文針對高速含沙摻氣水流的運動規律有別于低速水流及清水單相流，在自己研製的高速渾水循環系統中，通過對高速含沙摻氣水流壁面剪切應力和脈動壓強等參數的量測，分析了水沙氣三相流的紊動特性，探索了泥沙對固壁的磨蝕機理及減蝕措施，其主要內容包括以下幾個方面： 1
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