流型擴散 的英文怎麼說
中文拼音 [liúxíngkuòsǎn]
流型擴散
英文
dispersion due to flow profile-
New compressible fluid equations with unified convection diffusion type
統一的對流擴散型可壓縮流體力學方程與解法The dispersion model, with axial dispersion only was used to describe the liquid flow in the downcomer. the model parameters were fitted by the least - squares method. it was found that the curve of dispersion model fitted the experimental rtd curve well
本文利用一維軸向擴散模型對降液管中液體流動進行了數學描述，用時間域最小二乘法擬合了模型參數，模型方程所作曲線與rtd曲線吻合較好。In the part of theory study, based on the research fruit which the scholars before had made, from the competition ' s and competitiveness ' s initial definition, the essential connotation can be dredged up. depend on the analysis of the charter and function, the city ' s functions can be definituded as which cluster is means and diffuse is purpose. that is, the function of cluster can streghten through diffusion, the integrative competitiveness advantage reflects those functions together flatly. so, based on the shanghai social & science academe ' s and ni pengfei ' s urban competitiveness model - - goss, quality and flux can be used to contain the abundance content of urban competitiveness, as a result, the urban competitiveness indicator system can be established
在理論研究部分，在整合前人研究成果的基礎上獨辟蹊徑，從競爭和競爭力的原始定義出發挖掘城市競爭力的基本內涵，通過對中心城市特徵和職能的分析，明確了城市經濟集聚的目的是為了擴散，擴散才能進一步增強集聚的能力，而綜合競爭力的優勢則恰恰在這一點上集中反映了城市集聚和擴散功能的強弱；最後借鑒上海社會科學院和倪鵬飛的研究模型? ?用總量、質量和流量三個一級指標來涵蓋城市競爭力的豐富內容，並由此架構評價指標體系。The axial and lateral spread of fluid has been likened to and accounted for by a diffusion-type model.
流體在軸向和徑向的散布，已與一個擴散模型聯系起來並用後者加以說明。Knudsen diffusion model and the mixed flow model were solved numerically for the ethanol - water system. good agreement between experimental and theoretical values was found. but the mixed flow model is better
乙醇水溶液的vmd試驗表明，兩種組分同時通過膜微孔時， knudsen擴散模型和過渡流模型都基本能反映實際過程，但過渡流模型更接近實際情況。By integrating the backmixing theory of reaction engineering with predictive model of river pollution in environmental quality assessment study, the predictively longitudinal dispersion model of river quality was got and analyzed
摘要將反應工程學的返混理論與環境質量評價學的河水污染預測模型結合，得出了河流水質預測縱向擴散模型，並給出了解析解。Finally, some simplification methods to the model were studied and a modified block elimination contraposing the features of the model ' s linear system was developed, which can greatly decrease the model ' s requirement to computer resources. in the second part, numerical methodology of hybrid techniques was developed, which uses dfn models developed in the fist part to build continuum approximations of fractured rock
第三，本文將一種用離散的水?氣分界面模擬非飽和滲流的數值模型擴展到裂隙網路中，為用本文所構建的離散裂隙網路模型模擬裂隙巖體成富擁要柳廳錄非飽和滲流提供了一個初步的框架。In the first part of this paper, mn ( iii ) / mn ( ii ) couple in h2so4 was firstly applied as the positive couple to this system, i. e. redox flow cell. its chemical, electrochemical properties, redox kinetics and related parameters were characterized and discussed by rotating disc electrode ( rde ), cyclic voltammetry ( cv ), a. c. impedance ( a. c. imp ), chronoamperometry, tafel curve, and galvanostatic charge / discharge techniques. conclusions have been drawn as follows : 1. the electrochemical kinetics of mn ( iii ) / mn ( ii ) redox couple in 6. 3m h2so4 solution were studied by means of rotating disc electrode ( rde ) technique on platinum electrode
本文第一部分首次成功地將酸性介質中的mn （ iii ） / mn （ ii ）電對應用於氧化還原液流電池這一新型儲能裝置的正極活性材料，通過旋轉圓盤（ rde ） 、循環伏安（ cv ） 、交流阻抗（ a . c . imp ） 、恆電位階躍、 tafel實驗以及mn （ iii ） / mn （ ii ）單電極的恆流充放電實驗，我們得出以下結論： 1 .在旋轉圓盤電極上，不同轉速范圍，不同的極化過電位， mn （ ） / mn （ ）體系氧化還原電極過程的控制步驟不同，電荷傳遞、擴散傳質可分別或聯合成為控制步驟。Flamelet modeling of turbulent non - premixed flame based on detailed chemical reaction mechanisms
採用考慮詳細化學反應機理的火焰面模型模擬湍流擴散火焰Using a dissolved conservative material as a tracer in the water, a three - dimension advection - diffusion water exchange numerical model was used to study the flushing time by discharge and the discharge dominated region of the yangtze estuary. the flushing time of the yangtze estuary is an important eigenvalue, which denotes the water environmental capability of estuary
然後應用以溶解態的保守性物質做為研究長江口水體交換的載體，建立了完全三維對流擴散型的長江口水體交換的數值模型，對長江口的水體交換時間做了一個整體的計算。Using a dissolved conservative material as a tracer in the water, a three - dimension advection - diffusion water exchange numerical model was used to study the flushing time by discharge and the discharge dominated region of the yangtze estuary based on the successful simulation of flow field
在成功模擬長江口流場的基礎上，同時應用以溶解態的保守性物質做為長江口水體交換的載體，建立了三維對流擴散型的長江口水體交換的數值模型，對整個長江口的水體交換規律進行了研究。The analysis model and design methodology for the gas field are discussed referring to related documents. the structure parameters of gas manifold, channel, diffusion layer and hydrophobic layer which affect the oxygen distribution are also studied
本文闡述了氣場分析模型和設計思想，研究了進氣箱、交指型流道、擴散層和疏水層結構參數對氧濃度分佈的影響。In this paper, river water quality prediction is integrated with water pollution control measures. two parameters, water environmental capacity and pollution index are selected for pollution control measures. the objective is achieved after the development of simulation model using one - dimensional advection dispersion equation. the model algorithm and computer program is an improvement over the existing water quality models, since the model solution involves four point implicit upwind schemes for water quality prediction and pollution control measures at each grid point. model simulation results the assessment of water environmental capacity that yield the acceptable and realistic pollutants concentration in order to maintain water quality objectives. the pollution and overall pollution index of the river is suggested for integrating number of contaminants variables into one index. study provides the mathematical and scientific procedure for water quality management. the new approach is helpful for the water pollution control and to study the impacts of waste effluents on the river system for strategic planning purposes
本文將水質預測及水污染控制措施有機地結合，選取水環境容量和污染指數作為水污染控制的參數.這樣，一維對流-擴散水質方程的求解除就是實現本研究目的的關鍵.本研究採用的模型在現有的水質模型基礎上有所改進，因為其採用四點隱格式對水質進行預測，推求可接納污染物的環境容量值及為保證水質而限定的污染物濃度值，從而制定相應的水污染控制措施.為整體考慮各種污染物的情況，建議採用河流的污染指數進而推求綜合污染指數.總之，本研究為水質保護提供了科學的計算方法，該法對水污染控制及污水對河道水質的影響是實用有效的Abstract : in this paper, river water quality prediction is integrated with water pollution control measures. two parameters, water environmental capacity and pollution index are selected for pollution control measures. the objective is achieved after the development of simulation model using one - dimensional advection dispersion equation. the model algorithm and computer program is an improvement over the existing water quality models, since the model solution involves four point implicit upwind schemes for water quality prediction and pollution control measures at each grid point. model simulation results the assessment of water environmental capacity that yield the acceptable and realistic pollutants concentration in order to maintain water quality objectives. the pollution and overall pollution index of the river is suggested for integrating number of contaminants variables into one index. study provides the mathematical and scientific procedure for water quality management. the new approach is helpful for the water pollution control and to study the impacts of waste effluents on the river system for strategic planning purposes
文摘:本文將水質預測及水污染控制措施有機地結合，選取水環境容量和污染指數作為水污染控制的參數.這樣，一維對流-擴散水質方程的求解除就是實現本研究目的的關鍵.本研究採用的模型在現有的水質模型基礎上有所改進，因為其採用四點隱格式對水質進行預測，推求可接納污染物的環境容量值及為保證水質而限定的污染物濃度值，從而制定相應的水污染控制措施.為整體考慮各種污染物的情況，建議採用河流的污染指數進而推求綜合污染指數.總之，本研究為水質保護提供了科學的計算方法，該法對水污染控制及污水對河道水質的影響是實用有效的In this thesis, we mainly study the 1 - d quasineutral drift diffusion model
在這篇文章中，我們主要研究一維擬中性飄流擴散模型。The porous diffusion type silencer is widely used to reduce the air flow noise because of its small volume and high noise attenuating ability. the out case of the silencer plays a very important role in reducing noise. the effect of the hole ' s shape, diameter and the distance between neighboring holes as well as the matchup between the case and the sound absorbing material tube are investigated experimentally. the relation between the out - flow noise and the gas velocity distribution is carefully studied for two different kinds of matchup between the case and the sound absorbing material tube. some useful results are gotten, which may be valuable to the design of the silencer
多孔擴散型消聲器由於其體積小、消聲性能高而廣泛應用到排氣噪聲的降低上，其外殼對消聲器的消聲性能具有重要作用.本文對此類消聲器外殼的孔型、孔徑和孔距以及外殼同消聲材料的配合方面進行了細致的實驗研究，特別對外殼與消聲材料的配合與其排放噪聲以及外部流場之間的關系進行了探討，得到了一些有用的結論，對消聲器性能的提高具有一定指導意義。A kind of two - equation turbulent model of charged fluid flow is constructed, in which the interaction between electric field and flow field is considered. based on analyzing the properties of forces on the charged droplets in the spray, pseudo - fluid of charged droplets phase method is adopted to develop a kind of charged two - phase turbulent model. this model takes account of the interaction between charged droplets phase and electric field, the inter - phase action between droplets and gas, convection and diffusion of droplets " turbulent energy
考慮電場與流場的耦合作用，建立了荷電流體的湍流模型，在荷電顆粒受力分析的基礎上，採用顆粒擬流體的方法建立了荷電氣液兩相湍流理論模型，該模型考慮了荷電顆粒相流場與電場的耦合作用，氣相與顆粒相的相間作用以及顆粒相自身湍能的對流與擴散。With the finite - difference method, self - consistent solutions for the possion ' s equation, injected current density, carrier concentration, optical field and thermal conduction equations have been realized to study the thermal - field properties, the coupling of electricity, thermal and optical - fields, and the influences of n - dbr and double oxide - confining regions on the characteristics of vcsels
本文建立了一個直接耦合的準三維理論模型，通過有限差分法求解泊松方程、載流子擴散方程、熱傳導方程和光場方程的自洽解，研究了vcsel的熱場分佈特性，並實現了電、熱和光場的耦合，同時考慮了n - dbr及雙氧化限制層對vcsel特性的影響。By presenting the simplified flow model, the flow and velocity triangles were analyzed. in the paper, the author excavated the performance, calculated the velocity - pressure and flow loss of the worm shell, the outlet element of the pump
論文還深入研究了螺旋型離心泵的蝸型擴散管的結構和原理，計算了蝸型管的速度、壓力、流動損失，分析了擴散管的增壓原理。A two - dimensional double diffusive laminar mixed convection, displacement ventilation, is fully investigated by the means of heat and contaminant transport structures to see the effects of the heat and pollutant sources and the external mechanical ventilation
作者以二維層流雙擴散混合對流模型? ?置換通風? ?進行了數值模擬與分析，並利用上述對流可視化技術來觀察熱源、污染源、外部機械通風三個因素對室內空氣環境的影響。分享友人