boundary-layer theory 中文意思是什麼
boundary-layer theory
解釋
薄膜理論-
By introducing proper stretchy variable and constructing boundary layer function, it concludes n - order approximate solution, and using theory of differential inequality, uniformly validity of asymptotic expansion is proved
通過引進適當的伸長變量，構造邊界層函數，得到了解的n階近似值，並利用微分不等式理論證明了解的漸近展開式的一致有效性。 -
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。 -
From the vehicle safety angle, it provides theory and technical support for the research on automatic drive, intelligent drive and traffic safety. this paper is based on the study of single car external flow field about the simulation on the ground boundary layer, the rotating wheels and the crossing wind load, and on the two cars running - in - row and overtaking maneuvers
同時使用穩態超車的研究方法，利用了階背式、快背式和廂式mira模型代替轎車模型進行了不同車型超車過程的對比研究，利用定性和定量兩種方法研究了不同轎車車型在超車過程中的異同。 -
Using method of oil - flow visualization techniques and measuring pressure distribution along airfoil chordwise and spanwise studies have been down for sidewall boundary - layer displacement effect in two - dimensional wind tunnel. three different chord models were tested in two different wind tunnel. in order to clarify the sidewall effects and study method of sidewall suction theory and sidewall interference correction method to remove effects of sidewall on model. the results of oil - flow test show that selection rational suction wary can obtain better testing results. by investigations on effects of the sidewall boundary layer suction and application of a sidewall interference correction method
為了很好地解決多機場航班隊列的擁塞問題，在將進場容量、離場容量與機場容量作為統一整體的情況下，充分考慮了機場間的網路效應，詳細研究了多機場航班隊列的優化問題，建立了多機場開放式非實時流量管理的數學模型，通過選取適當的決策變量，使其為線性0 - 1整數規劃模型，實現了中心流量集中管理.與其它演算法不同，本文提出的啟發式隱枚舉演算法能很好地解決此類問題，對某機場網路系統的模擬結果證明了所建模型、優化演算法及相應軟體的有效性和可靠性 -
In this paper, based on my experiments, the mechanism of pneumatic defrosting of air cooler was studied through the application of thermodynamics, heat and mass transfer, classical theory of nucleation, boundary - layer theory, the theory on gas dynamics
本文在對氣動除霜進行了實驗研究的基礎之上，應用工程熱力學、傳熱傳質學、晶體成核理論、邊界層理論、氣體動力學等有關知識，從系統的觀點出發，探討了氣動除霜的機理。 -
The main content is : 1. through the pan evaporation experiments, in which the effects of wind speed, area and mass on the evaporation process has been studied, it is found that the behaviors of mixed and pure liquids have different characteristics, which cannot be explained by the theory of boundary layer control and basic evaporation
主要內容有： 1 、本文用淺盤蒸發法考察了風速、蒸發面積和初始質量對油蒸發過程的影響，發現混合液體蒸發與純液體蒸發行為有不同特點，將蒸發分為邊界層控制步驟和基本蒸發不足以反映其蒸發特點。 -
The dissertation refers to comparatively full literatures in the field of vsc, and the development history and characteristics of vsc are summarized, and the elementary concepts, elementary definitions, elementary properties, elementary principles and design methods are particularly introduced, and the causes of the chattering phenomenon are systematically analysed, and the study status of the chattering phenomenon and the main methods to eliminate the chattering are elaborated. for the deficiencies of traditionary methods, three improved methods are developed, which are improved exponent reaching law solution, variable boundary layer solution and the solution by adding an auxiliary continuous control term. for uncertain linear systems, an adaptive fuzzy integral variable structure control stategy ( afivsc ) is put forward to eliminate the chattering around the sliding plane, which introduces fuzzy logic to soften the non - linear discontinuous sig nal in the control variable and utilizes adaptive theory to adjust output membership function according to how much the uncertainty of the system is
比較全面地查閱了關于變結構控制理論的文獻，總結了滑模變結構控制的發展歷史和特點，詳細介紹了變結構控制的基本概念、基本定義、基本性質、基本原理以及設計方法；系統分析了變結構控制系統抖振產生的機理，並闡述了國內外目前對抖振問題的研究現狀以及消除抖振的主要方法；針對傳統抑制和消除抖振方法的不足，改進了傳統方法，得到了三種新的消除抖振的方法? ?即改進的指數趨近律法、可變邊界層法和附加連續項法；針對不確定性線性系統，在變結構控制策略中引入模糊邏輯和自適應理論來消除滑動平面上的抖振，提出了一種自適應模糊積分變結構控制方案（ afivsc ） ，利用模糊邏輯來柔化控制量中非線性不連續部分，採用自適應理論，根據系統不確定性大小在線調整模糊輸出量的隸屬函數，另外，鑒于模糊控制本質上是有靜差的，所以本文選擇了帶積分項的切換函數，由於積分項的存在使系統較正為無靜差系統。 -
In chapter five, as one of the applications of boundary layer theory on two - phase fluid pump, the calculation process and example analysis in vane design are given and the stability and convergence of algorithms and programs and rules showed in calculation are required
第五章作為固液兩相流泵的邊界層理論的應用之一，本章給出了它在葉輪設計中應用的計算過程及實例分析。通過實例分析及數值計算，本章得出關于演算法和程序的穩定、收斂性結論以及速度系數在計算中所表現出的規律性。 -
This paper applies the theory to do some work, as followed : 1. according to the field synergy principle, the heat boundary layer is analyzed deeply
本文把該理論應用於強化換熱過程，做了如下幾個方面的工作： 1 .結合場協同理論對換熱熱阻進行了更為深入的分析，提出了三層熱阻的概念。 -
To solve this problem, the method of " sucking - spouting " water has been put forward by lin bingnan, based on the theory of boundary layer control, namely, sucking part of the discharge at the upstream - side of the convex barrier and spouting it at the downstream - side
林秉南院士提出了兩種方案： 1 、吸、噴水方案，即在邊界（突出山體）的順水面將邊界層水流吸走，並在下游面噴水增加水流動量，以控制迴流尺度。 -
Applying the energy equation and boundary layer theory, this article also analyzed the relationship of energy transformation of overflow, and obtained the experience index and formula of instability critical conditions
並應用水流能量方程和邊界層理淪，研究了圍堰過水時的水流能量轉換關系，得到了穩臨界條件的指標和經驗判別式。 -
According to the theory of boundary layer and the important of boundary - layer separation point detection of delta wing, the measuring principle and structure scheme of various system alternatives based on mems technology have been discussed, selecting the prototype of better workability. base on the master piece model of micro shear stress sensor
首先，結合空氣動力學的邊界層原理，針對三角翼邊界層分離點檢測在實現主動氣動控制方面的重要性，討論了光學式、電容式和熱敏式微型剪應力傳感器的測量原理和結構方案，選取適合加工條件的微型剪應力傳感器樣件。 -
According to the theory of boundary layer control and aerodynamics of delta wing at medium attack angle, the generation mechanisms of rolling, pitching, yawing moments, which are produced by coupling between the microactuator array and boundary layer near the leading edge, have been discussed
首先，結合空氣動力學的邊界層控制原理以及三角翼在中等攻角條件下的氣動特徵，詳細討論了微致動器陣列通過與前緣邊界層的耦合產生三角翼翻滾、俯仰和偏航等力矩的機理。 -
In the basis of the references on a centrifugal pump of two - phase fluids from domestic and oversea, its theory of boundary layer is presented and set up and the modular curve equation of vane is received in this paper
本文在綜合國內外關于固液兩相流離心泵及與之相關文獻的基礎上，首次提出並建立了固液兩相流泵的邊界層理論，給出了葉片型線方程。 -
Based on the theory of boundary layer and analysis of the velocity field of main flow, the thesis also derives the vane shape equation. in the equation, （ angle of pump vane ） is variable parameter, （ velocity coefficient ） is introduced as medium factor, which connects the theory of boundary layer with the eular theory. it provides a valuable reference for the designation of vane of pump
基於離心泵葉片邊界層理論和對主流區速度場的分析，給出了離心泵葉片型線參數方程，它以葉片角為變參數，引入速度系數作為中間因子，將邊界層理論和歐拉理論聯系起來，並在離心泵葉輪的設計過程中統一起來，能夠在設計中就根據實際的需要防止或控制過流表面的邊界層的分離。 -
Then, only a given curve satisfied by the conditions of import and outlet of vane wheel as its modular curve will neglect the middle varying processes of in vane wheel, which reflect microscope properties in some degree - flow properties in boundary layer. leading into the velocity - coefficient unifies the boundary layer and eular theory in the design process of vane, which extends the area of selection of vane ' s curves and provides a valuable object function for the optimization design of vane
那麼，僅憑一條預先給定的滿足葉輪出入口條件的曲線去來作為葉輪的型線，它必將忽略了這種除了葉輪出入口之外的中間變化過程，而這種中間變化在某種程度來說又反映出微觀特性? ?邊界層流動特性；速度系數的引入，它使邊界層理論和歐拉理論在泵的葉輪設計過程中得到統一；它使選擇葉片曲線的域圍拓寬；它也為葉輪的優化設計提供了一個很有參考價值的目標函數。 -
New results about the existence of the positive solutions to a singular integral equation are obtained in the form of ( the equation is abbreviated ), t ( 0, 1 ), in the boundary layer theory
摘要對邊界層理論新結果中出現的一類奇異積分方程（方程式略） ， t （ 0 ， 1 ）進行討論，並得出了上述方程在（ 1 / 2 ， 0 ）上正解存在性的新結果。 -
The singular ordinary differential equations first arise in the fields of gas dynamics, newtonian fluid mechanics, nuclear physics, the theory of boundary layer, nonlinear optics and so on. it is also one of important areas in the study
具有奇性的常微分方程問題，最早是在研究核物理、氣體動力學、流體力學、邊界層理論及非線性光學問題中提出的，是微分方程研究中一個十分重要的領域。 -
Singular boundary value problems for nonlinear ordinary differential equations, which arise in a variety of areas such as mechanics, boundary layer theory, diffusion and reaction equations, biology, ect, become an im - potant topic in ordinary equations fields
非線性常微分方程奇異邊值問題來源於力學，邊界層理論，反應擴散過程，生物學等應用學科中，是微分方程理論中一個重要的研究課題 -
The singular ordinary differential equations arise in the fields of gas dynamics, newtonian fluid mechanics, nuclear physics, the theory of boundary layer, nonlinear optics and so on. therefore, it has been considered extensively
而奇異微分方程是微分方程領域中一個重要的研究課題，由於它不斷出現在各種應用學科中，例如：核物理、氣體動力學、流體力學、邊界層理論、非線性光學等，所以得到了廣泛而深入的研究
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