流體運動定律 的英文怎麼說
中文拼音 [liútǐyùndòngdìnglǜ]
流體運動定律
英文
law of fluid motion- 流 : Ⅰ動1 (液體移動; 流動) flow 2 (移動不定) drift; move; wander 3 (流傳; 傳播) spread 4 (向壞...
- 體 : 體構詞成分。
- 運 : Ⅰ動詞1 (物體位置不斷變化) move; revolve 2 (搬運; 運輸) carry; transport 3 (運用) use; wield...
- 定 : Ⅰ形容詞1 (平靜; 穩定) calm; stable 2 (已經確定的; 不改變的) fixed; settled; established Ⅱ動詞...
- 律 : Ⅰ名1 (法律; 規則) law; rule; statute; regulation 2 (律詩的簡稱) short for lüshi 3 (姓氏) a ...
- 流體 : [物理學] fluid; fluor流體力學 fluid mechanics; hydromechanics; 流體生物學 hydrobiology; 流體運動學 hydrokinematics
- 運動 : 運動[舊時用語] arrange things or get things done through pull
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Ultrasonic has being attracted much attention gradually in fuel atomization because of some specialities of cavitation and infection on liquid flow. in the course of atomization of pitchy oil, especially, does it show greatly its advantage, but its material atomizational mechanism need research ulteriorly. the primary content of this thesis is about adding cantilever reed to effervescent atomizer so as to combine ultrasonic and effervescent. this thesis has discussed ultrasonic some mechanism, ultrasonic dynamical procreator, effervescent and liquid mucosity infection on atomization, at the some time we make some experiments and discuss atomization rule following some machinery parameter and run parameter so as to find some rule about ultrasonic atomization and to rich the research of ultrasonic atomization mechanism. all that will be beneficial to the design about ultrasonic atomization atomizer
超聲波由於其空化機理及對液體的流變性影響等特性,在燃油霧化燃燒中逐步引起人們的重視,尤其在重渣油等高粘度液體的霧化過程中逐步顯示出其優越性,但其具體的霧化機理還需要做進一步的研究在氣泡霧化噴嘴基礎加入懸臂式簧片哨,將超聲波與氣泡霧化相結合是本文討論的主要內容本文從研究超聲波的一些機理入手,討論了超聲動力發生器氣泡霧化以及液體粘度對霧化質量的影響,並通過具體的實驗,根據實驗數據來討論霧化質量隨各種結構參數運行參數的變化規律,以便找到超聲霧化的一些規律,豐富對超聲霧化機理的研究,對超聲霧化噴嘴的設計具有一定的指導意義。According to gaseous " molecular kinetic, the mass diffusion rate is within finite value. so theoretical conclusion of mass flux ' s producing and the essential relation of flux vs. force could be drawn. with the assumption that local density states in near equilibrium and the distribution is gradual changed, the classical first pick ' s law was modified considering mass relaxation time
根據氣體分子運動論對質量傳播速度為有限值情況下的質量流的產生及流與力之間的本構關系作了理論推導,在假定局域濃度處于近平衡態,其分佈為漸進的情況下得到了考慮質量鬆弛作用的經典fick第一定律的修正式。Certain discrepancy remain between the simulation results and the experiment results, not only caused by the turbulent model, but also by the simplification of the inlet boundary condition and the mesh generation. modeling gas - particles interaction flows is complex. in this thesis, gas - phase transport equations coupled with the gas - particle interaction are derived based on the dsm turbulent models to handle the interaction of momentum and kinetic energy of turbulence between the gas and particles
分離器內的固體顆粒運動採用涉及湍流擴散影響的隨機軌道模型和確定軌道模型,同時在湍流模型中加入了顆粒影響的源項,在流場計算的基礎上,模擬了不同直徑的顆粒在分離器內的運動規律及顆粒分離效率,並同理論和實驗得到的數據進行了比較。Based on the hydrodynamic, by using momentum theory to the liquid in the flow channel, the computational formula of the air exciting - vibration force is acquired. by using four - step runge - kutta method, the periodic response results of the elastic rotor system with one single - disc are gained. then the dynamic characteristics of the rotor system at the certain rotate speed and the certain physic parameter of system are analyzed by using the phase spaces and poincare maps of this system
基於流體動力學,通過對葉片流道內的流體模型應用動量定理,得到此汽流激振力模型,並採用四階龍格庫塔法,得出了單盤彈性轉子系統的周期響應規律,然後根據系統的相軌跡及poincare映射圖,分析了系統在特定轉速及特定的轉子系統參數下的運動特徵。A new aerodynamic design system developed by authors for draft fan with enhanced efficiency, suppressed noise, enlarged flux and high load. the new design system features : a twist regulation for vortex control is employed in designing to lessen the secondary flow loss in the blade tip and hub ; the feasibility and high efficiency of this procedure has been verified by the tests of the prototype fan ; a new computer - aided 3d blading is used to optimize the blade ; numerical inverse checking is adopted to enhance accuracy in designing and cut down the period of the designing and production. this design system can make the optimized blade with " forward inclination ", " inclining sweep ", " bending sweep ", to minimize the various secondary flow losses, to expand the steady working range of the fan, and to suppress the aerodynamic noise source
本文通過對一種新型高性能礦用局部通風機的設計、製造及試驗全過程的綜述,展現了新的先進設計體系在民用通風機上的成功運用,其研製特點是: ( 1 )在葉片氣動設計中為了降低葉根及葉尖區二次流損失,採用可控渦扭向規律設計,樣機實測的高性能驗證了這種方法的可行性和高效性; ( 2 )在設計方法中採用較精確的數值反驗算,獲取最優設計方案,大大提高設計的準確性和成功率,並縮短了設計試制周期; ( 3 )在設計過程中發展了計算機輔助三維葉片造型新方法,可以根據設計需要簡便快捷地對葉片進行「前傾」 、 「傾掠」或「彎掠」造型,這些造型對減小各種二次流損失、擴大穩定工況范圍和控制葉輪機氣動噪聲源起到了非常好的作用。Abstract : a new aerodynamic design system developed by authors for draft fan with enhanced efficiency, suppressed noise, enlarged flux and high load. the new design system features : a twist regulation for vortex control is employed in designing to lessen the secondary flow loss in the blade tip and hub ; the feasibility and high efficiency of this procedure has been verified by the tests of the prototype fan ; a new computer - aided 3d blading is used to optimize the blade ; numerical inverse checking is adopted to enhance accuracy in designing and cut down the period of the designing and production. this design system can make the optimized blade with " forward inclination ", " inclining sweep ", " bending sweep ", to minimize the various secondary flow losses, to expand the steady working range of the fan, and to suppress the aerodynamic noise source
文摘:本文通過對一種新型高性能礦用局部通風機的設計、製造及試驗全過程的綜述,展現了新的先進設計體系在民用通風機上的成功運用,其研製特點是: ( 1 )在葉片氣動設計中為了降低葉根及葉尖區二次流損失,採用可控渦扭向規律設計,樣機實測的高性能驗證了這種方法的可行性和高效性; ( 2 )在設計方法中採用較精確的數值反驗算,獲取最優設計方案,大大提高設計的準確性和成功率,並縮短了設計試制周期; ( 3 )在設計過程中發展了計算機輔助三維葉片造型新方法,可以根據設計需要簡便快捷地對葉片進行「前傾」 、 「傾掠」或「彎掠」造型,這些造型對減小各種二次流損失、擴大穩定工況范圍和控制葉輪機氣動噪聲源起到了非常好的作用。This study analyzed the development of interaction and field by researching the interaction of charge. it also analyzed the regulation of the interaction, the concept of field and the relation between the field concept and other laws by studying the interaction of charge ( include “ the interaction of conductor ” 、 “ the interaction of static charge ” 、 “ the interaction of motion charge ” 、 “ the interaction of current element ” )
通過對電荷間相互作用(包括「帶電導體之間」 、 「運動電荷之間」 、 「靜電荷間」 、 「電流元之間」的相互作用)的研究,分析相互作用的規律,並進一步研究場的概念,分析場概念與其他定律之間的關系。After anglicizing the historical evolution and formed background of the real property tax systems, the paper defines the development and change of the tax system of real property of our country, introduces the historical origin of current real property tax system. from a large number of laws and regulations of involving the tax revenue of the real property, the paper studies main tax category and relevant category of real property in the market operation, and then put their main regulations in order. base on the investigations and examples the paper carries on positive analysis to the tax revenue burden and tax system structure s of the real property market, and draws a conclusion that the real property market burden is overweight which caused by the confusion of taxes and fees and conclusion that the tax system structure is " laying stress on flowing instead of making light of tenure "
通過對解放后不動產稅制的歷史沿革及形成的背景的分析,明確我國不動產稅收制度發展、變化的過程,以及我國現行不動產稅收體系的歷史淵源;從大量涉及到不動產稅收的法律、法規入手,研究了我國在不動產市場運行各個環節對不動產課征的主要稅種和相關稅種,並理清了它們的主要規定;通過案例分析和調查研究對不動產市場的稅收負擔情況和稅制結構情況進行實證分析,得出了稅費混雜,市場負擔過重以及稅制結構「重流輕存」的結論;通過對不動產各項稅種的詳盡考察,得出了我國不動產稅制體系中存在的主要問題;通過分析各國(地區)不動產稅收體系的構成,以及在取得、保有、轉移三個環節上的稅制關系,提出了我國不動產稅制體系可以借鑒的經驗和啟示;通過借鑒各國(地區)不動產稅收體系構建的經驗,結合我國的實際情況,找到了實現改革我國不動產稅制目標的途徑,構建、完善我國在新時期的不動產稅收體系,並且在此基礎上提出征收以不動產佔有稅為主體的財產稅的觀點。Realizes the longitudinal relationship between models by using object - oriented programming language ; 2 ) sets forth the function and software design in detail, and analyzes entities of the system. realizes the randomness of traffic flow and constructs vehicle arriving model, vehicle movement model on road segments and vehicle movement model on intersections, so completes the kernel part of traffic simulation ; 3 ) uses 3d modeling software - multigen creator and real - time simulation software - vega to build up the 3d virtual environment of microscopic traffic simulation, and drives dynamic entities such as driver - vehicle units and traffic lights in static scenes ; 4 ) studies the characteristic of checkerboard system of street layout, analyzes and decomposes the system to deduce a certain simplification method. and researches the application of urban traffic route choice
論文主要工作如下: 1 )利用面向對象技術分析交通模擬系統模型之間的橫向關系和交互作用,研究靜態實體的狀態變化和動態實體的運動規律;利用面向對象的程序設計語言實現系統中模型的縱向關系; 2 )詳細闡述交通微觀模擬系統的功能設計、軟體設計,分析模擬系統中的實體;實現車流的隨機性,建立車輛的到達、車輛在路段上的行駛過程、車輛通過交叉口的行駛過程等模型,完成交通模擬的核心內容; 3 )利用三維建模軟體multigencreator和實時模擬軟體vega建立交通狀態微觀模擬的三維虛擬環境,在靜態視景中驅動駕駛員-車輛單元、信號燈等動態實體; 4 )研究棋盤式道路格局的特點,從理論上分析並分解系統,得到一定的簡化依據,進一步研究城市交通路線選擇的應用。This thesis invests the item to take the gauge of to stop halfway with item to be used as the research object with the risks, in the expatiate while risk is investing the operation " s oneself characteristics with the internality to operate the regulation pass the characteristic that analysis risk invest activity with risk invest make policy procedure, study, join together risk ' s invest, and go forwarded a quantity for sufficiently study, adopting fuzzy mathematics the analysis, analytic hierarchy process etc. the mathematics method the investment to invest item to high and new technique risk the decision with mic rocosmic and macroscopic level to proceeds to settle with the fixed amount " s research the many targets, and created to set up a high and new technique risked to invest the item to synthesize the valuation index sign the system with the model evaluation
本論文以風險投資項目評估和項目中止作為研究對象,在闡述風險投資運作的自身特點和內在運作規律的同時,通過對風險投資活動和風險投資決策程序的分析、研究,結合風險投資的特徵,從宏觀和微觀層面上進行了充分的探討,採取模糊數學的數量分析、層次分析法等數學方法對高新技術風險投資項目的投資決策進行了定性和定量的研究,創建了一套高新技術風險投資項目的多目標綜合評估指標體系和模型評價。本論文的研究工作如下: ( 1 )提出了在風險投資項目管理活動中樹立風險評估、實時監控和中止決策的思想,並給出了相應的管理流程與方法。If applied experiential formula mechanically to calculate the dynamic moment of the tri - eccentric butterfly vavle, its errors for the results would be larger. the paper, by virtue of the postulate of flow with fixed constant, eddiless of ideal liquid, calculated laplace equation by finite difference method in rectangular coordinates, gained pressure distribution on the butterfly disc section, thereby figured out its dynamic moment under each opening angle and the method was feasible for calculating dynamic moment of symmetry or not, designed the program and described the curve of dynamic moment. finally, the paper infered their laws
採用經驗公式來計算三偏心蝶閥的動水力矩,誤差比較大,本文根據三偏心蝶閥的結構特點,利用理想流體的定常、無旋流動的假定,用有限差分法在直角坐標系中求解拉普拉斯方程,得到蝶板截面上的壓力分佈,從而計算出蝶板在各個開度下的動水力矩,設計出了求解的程序,給出了程序運行的結果並進行了數據處理從而得到了動水力矩曲線,總結了它的變化規律。Using the optimization control method of the moderm control theories, the time - varying control and output - feedback control the authors study the variable structure active control over the rotor vibration with sma, especially the method of restraining the transient response of the rotor vibration. they get the rule of the optimum control force and the optimum control electric current and discuss the influence of variable stiffness on the total system stiffness through analyzing the structure of sma controller. they also indicate the shortcoming of the orthodox design method of a controller, especially the imbalance phenomenon caused by the lack of the rod stability, and propose a new method for improvement and items which ought to be paid attention to in the design stage
運用現代控制理論中的最優控制方法,引入時變控制和輸出反饋控制,研究利用形狀記憶合金對轉子振動進行變結構主動控制,特別是抑制轉子振動的瞬態響應的方法,得出了最優控制力和控制電流的強度變化規律;通過分析形狀記憶合金動作器的結構,探討了變剛度支承對系統總體剛度的影響,指出了傳統設計方法的不足之處,特別是由壓桿穩定性不足引起的失穩現象,並提出了改進的方法和在設計中值得注意的問題分享友人