turbulent flow field 中文意思是什麼
turbulent flow field
解釋
湍痢-
And the following conclusion was got : generally, the existence of particles would limit and retard the developing of the coherent structure of the turbulent fields ; but when the mass loading is a little high, the existence of particles would promote the developing of the turbulent field ; at the same time, the gas flow field would enhance the particles " dispersion. at this time, the interaction between the two phased would promote each other. this phenomenon is just like the " sympathetic vibration " in mechanical engineering
認為：在一般條件下顆粒的存在會限制、遲滯流場的發展；但對于質量2002年6月?金晗輝摘要攜帶率較高的情況，在流場發展到一定程度以後顆粒的反作用會促進流場的發展;反之，在顆粒質量攜帶率較高的情況下，受顆粒反作用的氣相流場又會加強顆粒在流場空間中的擴散，揭示出氣粒兩相相間作用在一定的顆粒質量攜帶率條件下存在「共振現象」 。 -
Numerical computation of turbulent flow field of projectile
彈丸湍流流場數值計算研究 -
Numerical simulation of turbulent flow field supersonic inlet
超聲速進氣道湍流流場的數值模擬 -
Considering the characters of the viscoidal turbulent flow over high - speed train, the computing model of the outer fiow field for high - speed train has been established based on the incompressible fluid navier - stokes epuation and the turbulent model of ke two equations. the equation set of the flow field problem via finite element methods ( fem ) has been set up
根據高速列車粘性紊態繞流的特點，在較少簡化的條件下以navier - stokes方程和-兩方程紊流模型為基礎，建立了高速列車外流場的計算模型，在近壁區域採用壁面函數修正紊流模型。 -
The research object of this thesis is a chip - array that is fixed on one of printed circuit boards ( pcb ), which are located in a forced air field ( forced convection ) in an electronic case ; and from the essential equations of airflow we can deduce the mathematical model of the turbulent flow ; then we can establish the finite element algorithm and apply the fe software to work out the equations of turbulent flow, finally we can use the software to display and analyse the field of flow and temperature
本文以處于強迫空氣對流流場中的某pcb板及其板上的電子元件陣列作為研究對象，推導了紊流流場的數學模型，並建立了相應的有限元求解格式，應用有限元法分析軟體對該系統的紊流流場和溫度場進行了模擬分析：解算出pcb板上各電子元件的溫度分佈；並提出了用於求解系統風道特性曲線的cfd方法。 -
As to the simulation, three - dimensional n - s equations and two - phase flow model, in which the liquid toluene spray as discrete particles was considered, were employed to describe the turbulent combustion processes in the combustion chamber. the mass and energy transfer between the two phases were calculated by the droplet evaporation model, and the arrehnius model was used to obtain the gas chemical reaction rate. the details of 3d flow field, the distributions of temperature and compounds were obtained by solving the equations
數值模擬方面，應用三維湍流n - s方程以及顆粒軌道模型描述了激光器燃燒室內部的噴霧兩相燃燒流動過程，兩相之間的質量、能量交換由液滴蒸發模型計算，氣相化學反應速率由arrhnius公式計算，通過耦合求解氣液兩相模型方程，模擬了燃燒室三維流場，得到了燃燒室內的溫度和組分濃度分佈。 -
In chapter 3, the subgrid eddy - viscosity model for large eddy simulation is applied to calculate the three dimensions unsteady periodic turbulent flow in yantan francis turbine. the pulsating characteristics of some main physical parameters in flow field are found. the calculated axial water thrust of hydraulic turbine agrees with the model - test value
第三章採用大渦模擬亞格子渦粘模型，對巖灘混流式水輪機的流場進行三維非定常湍流分析，得到了流場中各物理量的脈動特性，計算出ms的軸向水推力與模型試驗值大小相當；同時論證了對于下機架承重的混流式水輪發電機組可採用其推力軸承負荷作為水電站廠房振動的最大垂直激振荷載。 -
With piv technology, the flow field was measured to judge the performance of pump sump. by analyzing the pictures of velocity, streamline, turbulent kinetic energy and vorticity, we found that the turbulence was bigger while the ratio of the runoff increased. and the vortices always appeared in the field where the runoff was small
通過piv試驗，測量了封閉式水泵吸水室內部的流場，以研究該水泵吸水室的性能； （ 2 ）通過分析流速圖、流線圖、湍動能圖和渦量圖，發現了流量比越大，湍動越大，漩渦總是出現在流量較小的一側。 -
The distributions of velocity vector, vorticity. turbulent kinetic energy and some other detailed flow information in the field are obtained. the influence of electric field on the flow field is discussed and gives a deep insight on it
3 、首次採用piv技術對荷電噴霧射流流場進行了測量，獲得了整個流場的瞬時速度、湍能、渦量等信息分布圖，研究了流場特性隨充電電壓的變化情況。 -
Based on series fundamental experiments and theoretical analyses, the electro - spray of fuel and charged two - phase turbulent flow are studied systematically and comprehensively in this thesis, which established a research foundation for electro - spray combustion. the research involves charging mechanism, charging and atomization characteristics of fuel, flow field properties of electro - spray, theory of charged two - phase flow and numerical simulation
本文圍繞燃料的靜電噴霧與荷電兩相湍流射流進行了系統而深入的理論和實驗研究，研究內容包括燃料的荷電機理、荷電霧化特性、荷電噴霧射流流場及荷電兩相湍流理論與數值計算，為荷電噴霧燃燒的進一步研究奠定了基礎。 -
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。 -
The international wind engineering circle has emphasized the studies on this area to the refinement of nonlinear wind - induced vibrations, the precise identification of aerodynamic parameters for structures as well as the real simulation of natural turbulent flow field for wind tunnel tests
國際風工程界對結構風效應的研究已著重於非線性風致振動的精細化，結構氣動參數的精確識別以及為風洞試驗所需的紊流風場的真實模擬。 -
Based on theoretical analysis, microbubble drag reduction is due to structure change of turbulent boundary layer caused by the microbubbles. experiments testify microbubble drag reduction for turbulent boundary layer, as well as bubble size, main flow velocity, etc. affecting the reduction ; with proper flow field model, turbulent model and difference scheme, numerical methods simulate the effect of boundary layer and bubble numbers on dray reduction
理論分析提出微氣泡降阻機理在於其引起湍流邊界層結構的變化；實驗證明了微氣泡對湍流邊界層的降阻作用以及氣泡尺度、主流速度等對降阻作用的影響；數值方法利用適當的流場模型、湍流模型和差分格式，模擬邊界層和氣泡數等對降阻的影響。 -
The numerical results show that the flow - field structures and main features of the compressible mixing layer including the distribution of mean velocity, turbulent fluctuation intensities, reynolds stress and growth rates agree well with experimental and other numerical results
計算出的流場結構和主要的流動特徵包括平均速度、湍流脈動強度和雷諾應力的分佈以及混合層擴張率都同實驗測量和其他時間發展數值模擬結果符合得很好。 -
To analyze particularly the shear flow and chemical reaction procedure occurred in supersonic turbulent combustion field, supersonic combustion mechanism is surveyed on by reading papers thoroughly
為細致分析超音速湍流燃燒流場的剪切流動及化學反應過程，針對超音速燃燒機理進行了深入的文獻調研。 -
The coupled turbulent flow field and temperature field are simulated by finite element method ; the influence of casting speed on the turbulent flow field and temperature field in the melting bath and the interaction between those two field are analyzed ; the variation tendency of the heat flux intensity between the melting bath and casting roll and law of variation with changes of casting speed in the process of solidification are given ; a comparison between the simulation results and experimental results demonstrates their good agreement ; and the mechanism of the heat flux variation is identified by analysis on the temporature gradient and development of solidification within the melting bath and its influence on the variation of the heat flux intensity
採用有限元法模擬了雙輥鑄軋不銹鋼過程的流熱耦合問題;分析了鑄軋速度對熔池內流場、溫度場的影響以及流場與溫度場之間的相互影響;給出了凝固過程中熔池與鑄軋輥之間的熱流密度變化趨勢及隨鑄軋速度的變化規律，並把此模擬的結果與試驗的結果相比較，吻合較好;通過熔池內溫度場及溫度梯度分析了熔池內凝固的發展及其對熱流密度變化的影響。 -
Numerical simulation on turbulent flow field within liquid - liquid cyclone
液旋流分離管湍流流場的數值模擬 -
Numerical simulation on turbulent flow field within double - inlet cyclone pipe with twin cones
雙進口雙錐旋流管湍流流場的數值模擬 -
The method of generating elements and nodes automatically by reading coordinate data on surface of bus body is introduced and realized to discrete the topology space of three - dimensional turbulent flow field around buses
客車周圍流場三維湍流數值模擬的空間離散化研究實現了由車身外表面離散點坐標數據文件自動剖分生成單元、節點和邊界條件的方法。 -
Cyclone separator three - dimensional turbulent flow - field simulation using the reynolds stress model
模擬旋風分離器內的三維湍流流場
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