two-parameter flow 中文意思是什麼
two-parameter flow
解釋
雙參數流動-
The paper mainly consider the followings : the performance parameter determination of cryopump, heat load determination and heat transfer of large cryopanel, reasonable distribution of heat load, the condition for construct steady flow in small vertical circle pipeline, balance condition for gas and liquid two - phase flow in the connection pipe between cryopanel and dewar, the safety of cryopump
文中探討了低溫泵性能參數的確定；大抽速低溫抽氣面的熱負載的確定及合理分配；冷凝面上豎直圓管內受熱建立穩定流動的條件；冷凝面與杜瓦間的連接管道內氣液「雙相流動」的平衡條件；低溫泵系統運行的安全問題。 -
In chapter four, according to the analysis on the boundary theory and velocity field of main fluid zone of two - phase fluid pumps, the parameter equations of vane ' s modular curve of centrifugal pump are given, which contact the boundary " layer and eular theory of two - phase fluid pump by the fixing angel of vane as variable and leading into the velocity coefficient a. the results show that, in designing process of vane ' s modular curve of centrifugal pump, the determination of the total shape and parameters relates the flow properties of two - phase fluid and output ability of pump, or the design of the modular curve of centrifugal pump is the kernel of hydraulic design
第四章依據固液兩相流泵的邊界層理論及對主流區速度場的分析，給出了離心泵葉片型線的參數方程；它是以葉片安裝角為參變數，以引入的速度系數k _ v作為中間因子，將兩相流泵的邊界層理論和歐拉理論聯系起來? ?它說明了這樣一個事實，在離心泵葉片型線的設計過程中，它的整個形態或參數的確定都關繫到兩相流體的流動特性和泵的輸出能力，或者說，離心泵型線的設計是其水力設計的核心。 -
In arbitrary curvilinear coordinates, the wall function is used for treating near wall regions. the influences of two different inlet gas parameter distributions and turbulent combustion models, as well as three different afterburners on turbulent combustion flow fields and wall temperature profiles are calculated. comparisons of experiment results and calculations results show that second - moment combustion model is reasonable for modeling turbulent reacting flows, inlet gas parameter distributions is more important. calculation method is reliable and can be used for the optimum design of afterburner
數值研究三種不同幾何形狀、兩種進口氣流參數分佈、兩種紊流燃燒模型等對加力室內各氣流參數、隔熱屏和加力室筒體壁面溫度分佈的影響，計算結果與試驗數據比較表明:不同幾何形狀加力室對加力室內紊流燃燒流場的影響要比進口氣流參數分佈大些，正確給定進口氣流參數分佈較為重要，二階矩紊流燃燒模型更適用摸擬三維紊流燃燒流動，計算方法合理，編制的計算程序可靠，可供加力燃燒室優化設計用。 -
The parameter measurement technique of two - phase flow is an important research field
在國際上，兩相流參數檢測也是一個急待發展的探索研究領域。 -
Two - phase flow parameter measurement is a difficulty in field of industrial process parameter measurement
兩相流參數檢測是工業過程參數檢測的一個難點。 -
Two - phase flow parameters measurement is a difficulty in field of industrial process parameter measurement
兩相流參數檢測是工業過程參數檢測的一個難點。 -
Process tomography technique is an attractive development orientation for the two - phase flow parameter measurement
應用過程層析成像技術進行兩相流參數檢測的研究是一個引人注目的發展方向。 -
The theoretical analysis and the simulation of the chain structure model indicate that the fluctuations of mass leaving enthalpy close in on that of distributed parameter model with two - order, two - order, and three order precision at the disturbances of heat flow rate, mass entering flow rate, and mass entering enthalpy
理論分析及模擬結果表明，該模型在熱流量、入口流量和入口焓的擾動條件下，出口焓的變化分別以二階、二階、三階精度逼近分佈參數模型。 -
In this article, constituting some the equations which reflect the flow law and building and applying many mathematical models of physical and chemical reactions in the the plasma ignition : applying k - two equations turbulence model to calculate the turbulence parameter supplying simplied reaction systerm model and applying eddy break - up model and p - i thermal radiation model. with these reasonable simplied modles, numerically simulating the flow field in the plasma ignition. during the numerical simulation, applying the body - fitted coordinates for the complex geometry of the computional field ; using the mixing format to disperse the equations ; applying simplec algorithm method to solve the equations ; using above models and methods, it can get flow field distribution ; including temperature, pressure, turbulent kinetic energy and its dissipation rate, turbulent viscosity, velocity, density. these results are significant to design and improve the plasma ignition
本文旨在通過構造反映等離子點火器內部流動規律的基本方程組，建立描述等離子點火器內部的復雜物理化學過程機制數學模型：模擬等離子發生器內部燃燒的-雙方程湍流流動模型；模擬氣體燃料在燃燒時中化學反應的簡單化學反應系統模型；模擬等離子點火器內部湍流預混燃燒的漩渦破碎模型；模擬等離子點火器高溫燃氣及其壁面的p - i輻射換熱的模型等等，對模型進行一定的合理的簡化，然後數值模擬等離子點火器內部流場的流動。 -
Electrical resistance tomography ( ert ) technique, which is based on resistance sensor principle, has the advantages of low - cost, non - intrusive, fast - responding. as a novel measurement technique, ert can play an important role in the on - line parameter measurement of the two - phase flow system
電阻層析成像（ electricalresistancetomography ，簡稱ert ）技術是一種基於電阻傳感機理的過程層析成像技術，具有成本低、非侵入和響應速度快等優點，是一種可實現兩相流參數在線檢測的高新技術。 -
Two sufficient conditions of one - parameter continuous flow over minimal
單參數極小連續流的兩個充分條件 -
The flow through the throat - type energy dissipator and the right - angle energy dissipator are calculated by using the two - equation turbulence model, which is expansively used to simulate the flow field successfully. the principal content and the achievement are concluded as follow : as a kind of internal energy dissipator in which the turbulent flow is contracted and expanded abruptly, throat - type energy dissipator was regarded as one of the potential energy dissipator for its many advantages, such as stable flow pattern, simple structure, easily controllable flow parameter, and anti - cavitation property
結合實體試驗，利用k -模型對當今尚處于起步階段的新型消能方式?洞塞消能工和直彎消能工進行了數值模擬研究，主要內容和研究成果如下： 1洞塞消能作為一種突縮突擴式的內流消能工，具有流態穩定、結構簡單、水流參數易於控制及防空化性能等優點，是一種很有發展潛力的消能方式。 -
Based on the reynolds " lubrication approximation, the small parameter method is introduced to approximately analyze velocity field and stress distribution between the two parallel disks with an interstitial second - order fluid. 3. squeeze flow between two parallel plates of a bingham fluid with partial wall slip is considered
以reynolds潤滑理論為基礎，採用小參數法研究了存在滑移時兩剛性圓盤間二階流體的擠壓流動，導出了流體的速度場和壓力分佈，進而求出圓盤間擠壓力的解析表達式。 -
The results show that the squeeze viscous force decreases with the slip parameter increases, rigid region of the fluid increases with the slip parameter increases. when the slip parameter tends to infinite, the results of the squeeze viscous force reduce to the case of the squeeze flow of rigid - plastic solid between two parallel disks
結果表明，圓盤上的擠壓力隨著滑移參數的增加而減小，當流體全部處于流動狀態時，即為圓盤擠壓牛頓流體時的情況；當流體全部處于剛性狀態時，即為圓盤擠壓理想剛塑性介質時的情況。 -
Factors that affect two - phase flow pressure drop are discussed in details at first. polynomial is used to fit the relation between property of differential pressure signal and lockhart - martinelli parameter x. based on the relation, a dual - parameter identification scheme using only differential pressure signal is given
討論了影響兩相流壓降的因素，用多項式擬合的方法研究了不同流型下差壓信號方差與lockhart ? martinelli參數x之間的函數關系。 -
Finally, the two dimensional flow in the diffuser is calculated, the results show that the change of ma makes an effect to the performance of the diffuser. owing to the accretion of ma, the action of oblique shock waves and the boundary layer pricks up, the flow separates from the wall where the shock waves impinge on the boundary layer more quickly, the cluster of diamond shock waves becomes larger. moreover, by comparing the change of flow field under different structure parameter, it is found that the augment of length of constant area section alter the structure of fluid field little, a smaller area ratio and larger angle of compression section make the diffuser working better
最後，針對擴壓器中的二維流場進行了數值模擬，結果表明馬赫數對擴壓器性能影響較大，隨著馬赫數的增大，擴壓器管道內激波-附面層干擾加劇，流動從附面層分離相應加劇，激波串數目增多;通過比較不同結構參數下的擴壓器內流場，發現等直段長度的變化幾乎沒有改變流場結構，只是對局部流場稍有影響，並且在其它參數不變的情況下，一定范圍內減小面積比a2 / a1和增大收縮角有利於擴壓器性能的提高。 -
For the problem that on - line monitoring of primary air of direct firing pulverizing system ca n ' t be complete achieved, the chaotic properties of parameter change of two - phase flow in pipe is analyzed in the paper, according to the pressure difference signal of two - phase flow system
目前電站鍋爐直吹式制粉系統的一次風氣固兩相流流動狀態在線監測仍未得以實現，針對這一難題，本文首次基於管道內氣固兩相流差壓信號對其流動狀態變化的混沌特性進行理論研究。 -
So the measure technology of gas - solid two - phase flow yet belongs to the research field urgently waiting for developing based on the research achievements obtained by our task team recently, this dissertation further employed information process technology into parameter measurement of gas - solid two - phase flow, where the neural network technology was used to recognize the flow regime and the data fusion technology to measure the flow velocity of solid - phase particles, and the simulation research was worked
因此，氣固兩相流檢測技術尚屬一個急待發展的研究領域。本文在課題研究小組近年來取得的研究成果基礎上，進一步將信息處理技術引用到氣固兩相流參數檢測中。文中主要應用神經網路和數據融合這兩種方法分別進行氣固兩相流流型的辨識及固相顆粒流速的檢測，並進行了模擬研究。 -
By now, many achievements have been acquired, including hundreds of empirical correlations to predict the chf value, and models for chf in different conditions, what ' s more, more basic research about two - phase flow, heat transfer, and behavior of gas bubble etc. whereas, all approach of predicting chf value or explaining the phenomena, has disadvantages of limited parameter range and accuracy
包括各種參數條件下的經驗公式，對于不同機制下的理論研究以及更加基礎的兩相流動、兩相傳熱、汽泡動力學等多方面的研究。但是在所有目前已經取得的成果中，還是存在適用范圍的局限性以及精確性的問題，因此繼續對chf現象進行深入研究是很有必要的。 -
But there are some problems and difficulties in ect designs and ect applications. the topics of this dissertation are small capacitance measurement that is a key part in ect designs and ect applications, high - speed data acquisition system design and ect applications in two - phase flow parameter measurement
本文針對制約電容層析成像技術發展和應用的微弱電容測量和數據採集速度等問題進行了深入研究，研製了一套高速電容層析成像系統並在氣液兩相流流型識別和空隙率測量以及流化床固相含率分佈量化監測上得到成功應用。
分享友人