摻流水 的英文怎麼說
中文拼音 [chānliúshuǐ]
摻流水
英文
seep-off-
The results of research on the workability of hbc concrete show that hbc concrete, when compared with opc concrete, has excellent compatibility with superplasticizer, in terms of better initial fluidity, less slump loss, definite saturation point and less dosage at saturation point. in addition, good mineral admixture such as i class fly ash can obviously improve the workability of hbc concrete. moreover, hbc concrete exhibits more excellent workability under the condition of low w / c ratio, which indicates hbc is more suitable for making super high strength concrete whose w / c ratio is very low
對高貝利特水泥高性能混凝土工作性能的研究結果表明,高貝利特水泥與高效減水劑具有良好的適應性,表現為初始流動度較大,經時損失較小,具有明顯的飽和點且飽和點摻量較小;此外,優質的礦物摻和料如一級粉煤灰能明顯改善hbc混凝土的工作性能;更為突出的是hbc混凝土在低水膠比的情況下表現出更為優異的工作性,這一特性預示著高貝利特水泥更適宜配製水膠比很低的超高強混凝土。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。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。But the chemical properties have no remarkable influence on it ( 3 ) as the water - to - binder reduces wich is one of key factors in the perpormance of reactive powder concrete with steel slag, the fluidity decreases but the strength increases ; incorporation of 4 percent steel fiber in volume can decrease fluility and increase strength ; heat - curing benefits the increase of strength which can still develop in 28 day water curing after heat - curing
( 3 )水膠比是影響其性能最為關鍵因素之一,隨著水膠比的降低,流動性下降和強度的提高都很明顯;摻入4的鋼纖維對流動性的影響比較明顯,同時也不同程度地提高了強度;熱養護有利於強度的提高,經熱水養護後放置水中至28天齡期,其強度有較大提升,並沒有出現強度倒縮現象。The result shows that blended cement mixed with activatory coal gangue powder has high compressive strength, however, with the increase of the admixture of coal gangue powder, flowability of blended cement paste become worse, and the setting time is not obviously affected
結果表明,摻入經活化處理的煤矸石粉配製的混合水泥具有較好的強度性能;隨摻量增加,水泥漿體的流變性能變差,但對凝結時間並無明顯影響。The activatory coal gangue powder ( acgp ), ground cement clinker and natural gypsum are mixed by different ratios to prepare blended cement specimens, and its mortar compressive strength performance, water usage for standard consistency, and flowability of mortar are investigated
摘要將經燃燒等過程進行活化處理的煤矸石細粉與磨至一定比表面積的水泥熟料及天然生石膏混合均勻,製成了活化謀矸石粉摻量比例不同的多組混合水泥,並對其膠砂強度性能、標準稠度用水量、膠砂流動度進行了實驗檢測。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。After bfs is put into high strength superplasticized expansive concrete ( substituted for cement ), autogenous shrinkage does n ' t appear in 1 day standard curing, and e2 in 14 day ' s age is higher than that of high strength superplasticized expansive concrete without bfs in the same age
高強流態膨脹混凝土摻入磨細礦渣(等量替代水泥)后,標準養護1天未出現自收縮, 14天的限制膨脹率明顯高於未摻磨細礦渣的高強流態膨脹混凝土的對應值。In this paper, the early hydration processes of cement pastes including various contents of coal stone were studied by alternating current impedance spectroscopy
摘要採用交流阻抗譜方法對摻加不同量煤矸石的水泥漿體的早期水化過程進行了研究。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。The research result indicated that on the condition of the same mortar fluidity, the preventing effects of mineral and superplasticizer compounded on aar are better than that of mineral used singly, the preventing effects of mineral admixture and entraining agent compounded are better than that of mineral admixtures used singly, the preventing effects of mineral and superplasticizer and entraining agent compounded are lower than that of mineral admixture and entraining agent compounded. the research achievement has some guiding sense on the recognition of aar prevention in pumping hpc and the researches of test methods for determining the alkali reactivity of aggregate used in hpc
研究結果表明:在相同砂漿流動度條件下,減水劑與礦物摻合料復合使用對堿?骨料反應的抑制作用大於礦物摻合料單獨使用的抑制作用;引氣劑與礦物摻合料復合使用對堿?骨料反應的抑制作用優于礦物摻合料單獨使用的抑制作用;減水劑、引氣劑與礦物摻合料三元復合使用對堿?骨料反應的抑制作用小於引氣劑與礦物摻合料二元復合使用的抑制作用。The study shows that the flow ability has been greatly improved and its loss has been reduced, while the time of paste hardening has been delayed by adding the high - ti bfs powder
試驗同時指出,高鈦礦渣的摻入,明顯提高了膠砂流動性,減少了流動度的經時損失,延緩了水泥凝結時間。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。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。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。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。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。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。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。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分享友人