mass-transfer method 中文意思是什麼
mass-transfer method
解釋
質量轉移法-
Fist ly, use mass equivalent method to predigest the original rotor system. secondly, use transfer matrix arithmetic to have finished the relative program to calculate the critical speed of flexible multi - tray rotor bearing system by matlab language. thirdly. finish program the unbalance response using riccati - transfer matrix arithmetic and finity buck arithmetic. fourthly, answer to the high vibration of uncontroled system when cross the critical speed, come out to adopt changing clearance damper bearing to control the viberation
本文對多柔盤轉子-支承系統的振動現象做了以下初步探索：用質量離散化方法把原轉子系統簡化；採用matlab語言編制了對傳遞矩陣法計算多柔盤轉子-支承系統的臨界轉速；用matlab語言對riccati傳遞矩陣法和有限元法編制了程序計算系統的不平衡響應；並針對其過臨界轉速時振動較大的現象，提出採用變間隙控制油膜剛度和阻尼，從而使原系統的在特定轉速（臨界轉速）的一段范圍內不平衡響應減小；並從被動控制與主動控制兩方面進行數值模擬，取的了較好的控制效果。 -
Associating with the research and development of national natural heavy concentrate system, considering the feature of natural heavy concentrate database separately stored in every province, which is of mass data, discrete, irregular distribution, and influenced by hardware factors, such as computer configuration and network transfer speed, distributive database and parallel computing philosophy is applied, zone partition and multi - threading queue method is employed to retrieve and process the discrete data within a certain polygonal zone
結合全國自然重砂系統研製，針對分散存放在全國各省的自然重砂數據庫，數據海量、離散、分佈無規律、受計算機配置、網路速度等硬體因素影響的情況下，應用分散式數據庫及并行運算理念，採用區域分片及多線程隊列方法對某個多邊形區域內的離散數據進行檢索與處理。 -
Periodic, quasi - periodic and chaotic motions show on alternately when the rotating speed is near to 2 / 3 0. combined step - by - step integral method with traditional transfer matrix method, an increment transfer matrix method is put forward. based on riccati method, the increment transfer matrix method is used in a multi - mass model
將逐步積分法與傳統傳遞矩陣法相結合，提出了增量傳遞矩陣法思想，文中相該方法應用於多段集中質量模型，並結合riccati法，推導了汽輪發電機組軸系彎扭耦合振動響應計算的矩陣表達式，並開發了一套較完善的汽輪發電機組彎扭耦合振動分析軟體。 -
The discussion on the effect of many parameters on chf value is provided in the later section. what ' s more, based on existing knowledge on mechanism of such chf phenomena and mass and heat transfer in such conditions, this article provides a numerical calculation method to predict the chf value in such condition
發現一般情況流速增大有利於chf值的增大，而在高出口含汽量情況下則出現相反的趨勢；進口含汽量增大則chf值減小；而出口含汽量的影響則表現的更為復雜。 -
Secondly, for the first time, by volume average concept and reynolds time - average method, a 3d quasi - single phase mass transfer model of distillation tray is deduced by considering the effects of velocity fluctuation, concentration fluctuation and volume fraction of gas and liquid on mass transfer. a source item sc for interphase mass transfer is considered. by applying conventional method of estimating the interphase mass transfer coefficient, a formula for sc is obtained
其次，採用體平均概念、雷諾時均化方法結合塔板氣液相互作用的實際情況首次推導了考慮速度、濃度脈動項和氣、液相含率影響的塔板三維擬單相流湍流傳質模型，源相中考慮了氣液相間傳質項sc ，並運用化工中關于相間傳質系數計算的理論，推導了sc的表達式。 -
One of the main aspects of research on distillation column with trays is the fluid field and mass transfer on the trays by the method of computational fluid dynamics ( cfd )
=在蒸餾設備中，板式塔研究的一個重要方面就是應用計算流體力學對塔板上流體流動狀況及傳質過程的研究。 -
The compute model of shafts of the machines is built by adopting concentrated mass method. taking into account the different support conditions of the shafts that workshop is considered as rigidity or elasticity ; the natural characteristic and unbalanced response of the shafts are computed by integrating with high stable riccati transfer matrix method
採用集總質量法對機組軸系建立了計算模型，並結合穩定性良好的riccati傳遞矩陣法，分別考慮機組軸系的支撐基礎（廠房）為剛性、彈性兩種情況，計算了機組軸系的自振特性、軸系的不平衡響應。 -
Standard test method for determining the dynamic thermal response of thermal mass transfer ribbon products - atlantek method
測定熱質量傳遞帶狀產品的動態導熱性的標準試驗方法. atlantek方法 -
To solve the mathematic equations, the method based on condensation degree was used. the distributions of temperature, concentration and mass flux on the film surface ; of temperature and concentration in the vapor ; of heat transfer coefficient in the vapor and in the liquid were obtained by applying the model in the flow field
採用冷凝度的方法對該數學模型進行求解，得出了汽相的濃度分佈和溫度分佈，界面處濃度分佈、溫度分佈和傳質速率分佈，以及汽相和液相的傳熱系數分佈。 -
The heat transfer of the wall and the internal thermal mass is considered in this model. the control equation can be solved by an implicit finite - difference method
利用有限差分方法對該數學模型得到的控制方程組進行離散，並對離散得到的差分方程的計算求解過程進行了編程。 -
The finite volume method and the star - cd software are used to compute the fluid flow process and mass transfer process of one tray and for the first time of the whole distillation column ( 10 trays ) under the total reflux. the computed results are as follows : 1. since the previous research did not show the comparison between the computational results and the measured values of 3d fluid field on a distillation tray, attention is paid to present work in this paper
本文採用有限體積法及計算流體力學軟體「 star - cd 」對單塊板以及首次對全迴流下的全塔（十塊板）流體流動、傳質過程進行了計算，計算結果如下： 1 .泡沫工況下單塊板的流場計算值與solari及bell （ 77 （的實測值吻合較好。 -
The heat and mass transfer theory in the porous media and wood fields was studied, and introduced in detail to find a promising method in the process of particles drying with convection
摘要詳細介紹並歸納多孔介質與木材領域內的傳熱傳質理論研究概況，從中尋找出適合研究刨花對流乾燥過程傳熱傳質的方法。 -
Regarding the suspension system as a substructure ( subsystem ) appended on the car body, and considering the vibration transfer effect of the suspension system for the displacement excitation induced by unevenness of road surface, an explicit formula about the quantitative relationship between the sound pressure of low frequency interior noise and some of the suspension characteristic parameters of a vehicle, i. e., the stiffness, the damping, the under suspension mass of suspension system, and the radial stiffness, the radial damping of tire, is deduced based on the dynamic substructure modification method for structure - acoustic coupling analysis of an automobile ' s passenger compartment
摘要基於車身乘坐室聲振耦合的動態子結構修改方法，將汽車懸架系統視為附加於車身上的子結構（子系統） ，並結合懸架系統對路面不平度位移激勵的振動傳遞效應，揭示出車內低頻噪聲的聲壓值與懸架系統剛度、阻尼、非懸掛質量以及輪胎徑向剛度、徑向阻尼間的直接定量關系。
分享友人