turbulence characteristics 中文意思是什麼
turbulence characteristics
解釋
湍流系數- turbulence : n. 1. （風等的）狂暴；激流（現象）。2. 騷亂，動亂；強橫。3. 【氣象學】亂流。
- characteristics : 產品性能描述
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In the third chapter of this dissertation, based on the physical and chemical properties of hydrogen and the combustion characteristics of hydrogen, the quasi - dimension combustion calculation model of hydrogen ? fueled engine is set up through analyzing the characteristics of turbulence flame and chemical reaction kinetic of hydrogen ? air mixture. the model includes the dual ? area thermodynamics sub - model, quasi - dimensional turbulent entrainment combustion sub ? model, turbulence flame promulgating sub ? model, hydrogen - air mixture chemical kinetic sub - model and loss of heat transfer sub - model and so on
本文從氫燃料的物化特性和燃燒特徵著手，通過分析氫空氣混合氣燃燒的湍流火焰結構和燃燒化學反應動力學，基於雙區燃燒模型，建立了包括雙區熱力學、準維湍流卷吸燃燒、湍流火焰傳播速度、氫空氣混合氣燃燒化學反應動力學以及傳熱損失等模塊的燃燒模型，並給出了相應的計算方法。 -
On the basis of present papers about semi - open thermosyphons, the heat transfer characteristics of the turbulence semi - open thermosyphon ( tsot ) were investigated both experimentally and theoretically
在前人有關重力熱管和半開式重力熱管的試驗研究和理論研究的基礎上，本文對一種新型的熱虹吸管進行了傳熱性能研究。 -
It is a reliable instrument for the measurement of the coherent structure in turbulence. an improved 2 - d ptv was developed based on previous research experiences, which can be used to measure the trajectories of particles motion. for the experimental study on the particle motion in the dilute solid - liquid two - phase flow, especially for the motion characteristics and dynamic characteristics of coarse particles in water, this kind of system was proved to have great advantages
利用該系統可獲取大量的統計樣本並進行計算機快速分析，為明槽紊流相干結構的試驗研究提供了一種嶄新的測量手段；在前人工作的基礎上，開發了一種能夠測量水流中顆粒運動軌跡的ptv系統，該系統具有可靠的精度，能同步測量全剖面的顆粒瞬時運動信息，為顆粒運動特性及動力學特性的試驗研究提供了強有力的手段。 -
The potential problems related to the applications of k - model under the new coordinates are analyzed and the distribution formula of vertical turbulence viscidity coefficients is deduced on the base of logarithmic velocity of flow according to the characteristics of the model
分析了在新坐標系下應用k -模型可能存在的問題，並從模型的特點出發，以對數流速分佈為基礎，導出了垂向紊動粘性系數的分佈公式。 -
The experimental results of the flow characteristics of the mmc heat sink indicate that the critical reynolds number signifying the transition from laminar flow to turbulent flow is in advance ; under the same experimental conditions, the variation in entrance direction of the microchannel inlet and outlet has little effect on the microchannel ; the experimental values of the friction factor of the de - ionized water in a microchannel agree well with those calculated using the theoretical laminar formula ; furthermore, a comparison of the experimental results and simulation results shows that navier - stokes equation and rng - turbulence model can be used to model the laminar and turbulence flow regions in a microchannel ; meanwhile, the correlations of the flow resistance in the turbulent flow regions for the de - ionized water as the working fluids are obtained from experiments
對歧管式單通道熱沉流動特性的研究結果表明，微通道內流體流態由層流向紊流轉變的臨界雷諾數提前;改變流體的進出口方向對熱沉總壓降造成的影響很小;摩擦系數的實驗值與理論值較接近;數值模擬結果能夠與實驗值較好吻合;並由實驗給出了紊流區流動阻力的實驗關聯式。此外，選用十二烷基硫酸鈉（ sodiumdodecylsulphate ， sds ）以及烷基多糖苷（ alkylpolyglycoside ， apg ）作為減阻添加劑，研究了表面活性劑添加對微通道流動特性的影響。 -
The turbulence picture predicts that whatever is true of low - mass stars should also be true of brown dwarfs, whereas the ejection hypothesis predicts that brown dwarfs will lose some of their starlike characteristics in the course of being ejected
亂流說預期低質量恆星與棕矮星的發生機制並無二致，排斥說則預言棕矮星在被排斥逐出的過程中會喪失某些恆星的特性。 -
Characteristics of the turbulence in the surface layer over the plateau of western china
我國西部高原地區近地層湍流特徵的研究 -
The characteristics of flow field in boundary layer are different from that of laminar flow and turbulence. so, it was not ignored
邊界層雖很薄，但由於其水流特性與一般的層流、紊流特性相差甚大，因而它對水流的影響是不可忽略的。 -
A three - dimensional - acoustic doppler velocimeter is used to measure the velocity components of the flow field in all three coordinate directions for different discharge and measurement site. the influence of measurement site and the depth / vegetation height ratio on the measured velocity profile and turbulence intensity and the renolds stress is analyzed. the characteristics of the measured velocity distributions and the results of the previous investigators are used to select an analytical expression for the shape of the velocity profile
利用三維超聲波多普勒流速儀（ adv ）量測不同位置、不同流量下的瞬時流場。分析了測點位置和水深與植被高度比對時均流速分佈的影響。本文還給出了種樹段紊動強度及雷諾應力的垂線分佈。 -
Recently in the simulation of indoor airflow, mainly adopted is the turbulence model theory, rans, which solves only the time - averaged flow field and cannot reveal the characteristics of the rapidly changing of turbulence
目前室內氣流模擬主要採用湍流模式理論（ rans ） ，但該方法求解的是時均場，體現不了湍流場瞬息萬變的特點。 -
Using the program two and three - dimensional numerical simulation of wind flow around single or multiple buildings can be achieved and the detailed flow condition including wind velocities, pressures and time - average characteristics of turbulence can be obtained. in order to attain the required accuracy efficiently multi - layer local refinements can be carried out based on the initial division grid
程序採用fortran語言編制，可實現二維和三維單體及群體建築的繞流風場的模擬計算，獲得建築繞流風速、表面風壓及湍流平均特性等數據；可通過對初始網格實施多層次的網格局部加密，以使風場解達到最終的精度要求。 -
Meanwhile, numerical computation of aerodynamics is widely applied with the progress of computer, large quantities of relative paper has been presented. but at present, the relative literature about turbulence characteristics of plural vehicles running in row and passing maneuvers is very limited. pointing to the above difficulty, in this paper, numerical computation of turbulent - velocity field is studied while a sedan exceeding a tractor - trailer truck
本論文在對某國產轎車單車外流場的模擬地面邊界層、車輪轉動和側向風載荷研究基礎上，以及兩輛轎車並列行駛、同向超車的穩態研究的基礎上，選取了兩種笛卡爾網格方案和四面體混合網格方案，開展某國產轎車超過某大型運輸車的數值模擬研究。 -
Study on characteristics of fluctuation for optical wave propagation in the atmospheric turbulence
湍流大氣中的光波閃爍研究 -
The motion characteristics of the suspended particles were obtained by statistical analysis, including vertical concentration distribution, mean velocity profile, turbulent intensity, velocity correlation, and the probability density distribution of the velocity fluctuations. attempt has also been made to interpret the turbulent characteristics in terms of particle properties and turbulence structure
對不同容重、不同粒徑的顆粒在不同水流條件下的垂線濃度分佈、平均速度和脈動強度分佈、相關函數及脈動速度的概率密度分佈等進行了全面系統的統計分析，得到的中文摘要主要成果如下： -
Paragliders with very demanding flying characteristics and potentially very violent reactions to turbulence and pilot errors, little scope for pilot errors. for expert pilots
飛行特徵非常苛刻。對飛行員的錯誤和紊流的反應非常猛烈。僅限專家級高手使用。 -
Paragliders with demanding flying characteristics and potentially dynamic reactions to turbulence and pilot errors. recommended for regularly flying pilots
具有苛刻飛行特徵的滑翔傘。面對亂流和飛行員的錯誤具有潛在動態反應。建議有長期飛傘經驗的飛行員使用。 -
Paragliders with very demanding flying characteristics and potentially violent reactions to turbulence and pilot errors. recommended for experienced and regularly flying pilots
飛行特徵非常苛刻。對飛行員的錯誤和紊流的反應非常猛烈。建議有檢驗和經常飛行的飛行員使用。 -
In order to study the characteristics of the stepped spillway overflow comprehensively and seek for the measure to increase the energy dissipation of the stepped spillway at large unit discharge, the method of turbulence numerical simulation and model test are used to study the stepped spillway overflow. in view of the curved free water surface, complicated boundary condition and turbulence flow, it very difficult to simulate the stepped spillway overflow
為了對階梯溢流壩面流場特性進行全面的研究，同時探求在大單寬流量下提高階梯溢流壩消能率的措施，本文採用紊流數值模擬與實驗相結合，數值計算為主、實驗為輔的研究方法對階梯溢流壩面流場進行了較系統深入的研究。 -
Numerical calculations are performed by the standard k - model and dynamic mesh capability on vehicles being in crosswinds, running in tunnel, passing by and overtaking each other. their aerodynamic characteristics are analyzed and some different turbulence properties are obtained
本文對fluent進行二次開發，採用動網格技術及標準k -兩方程湍流模型對類車體在側風情況、穿越隧道及超車、交會過程進行三維非定常數值模擬，獲得了規律性的認識。 -
On sub - grid scale turbulence characteristics
亞格子尺度湍流特性研究
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