time-averaged 中文意思是什麼
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( 3 ) the clear - sky day - time - averaged lst in guangxi were imaged
（ 3 ）製作了廣西白天全晴的lst平均圖。 -
A two - cylinder model for saal incorporating bem simulations is proposed, which introduces a factor concerning the geometric parameters of the levitator into the expressions for the time - averaged potential u, acoustic radiation force f, and restoring force constant ki, respectively, and builds up the relationship between the levitation capabilities and the geometric parameters of a single - axis acoustic levitator
建立了單軸式聲懸浮的優化設計理論模型，採用邊界元方法求解入射聲場，在表徵聲懸浮性能的時間平均勢u 、聲輻射力f _ i和回復力常數_ i的表達式中分別引入了一個涉及懸浮器幾何參數的因子。 -
The results indicated that the generation of trailing - vortex of downstream adjacent vanes could be restrained effectively by upstream wake when the passing frequency and the amplitude of wake defect satisfy some conditions, associated with a significant enhancement of time - averaged aerodynamic performances : loss coefficient reducing 40. 2 % and the ratio of loading coefficient and loss coefficient increasing 93 %
研究表明：滿足一定通過頻率和虧損幅值條件的尾跡能夠有效抑制下游相鄰葉排尾緣渦的生成，達到控制或是推遲附面層非定常分離的目的，從而使得流場時均性能大幅度的提高，損失系數降低了40 . 2 % ，功損比增加93 % 。 -
A boson josephson junction ( bjj ) formed in a weakly coupled double - bec has been discussed intensively. based on mean - field theory ( mft ), which gives rise to the gross - pitaevskii equation, interesting phenomena such as macroscopic quantum self - trapping ( mqst ), and n - phase state, where the time - averaged quantum phase difference across the junction equals n have been predicted
目前由弱耦合雙組分bec所構成的玻色約瑟夫森結（ bjj ）成為研究熱點，在平均場理論基礎上預言了許多有趣的現象如宏觀量子自捕獲（ mqst ） ，和-位相態（結間量子位相差的時間平均值為） 。 -
Secondly, the relation between nusselt number and the local time - averaged velocity and temperature fields of turbulent convection was theoretically induced, which expands the field - coordinated enhancement principle to turbulent convective heat transfer
然後，在理論上導出了紊流對流換熱的整體換熱性能與局域時均速度場和時均溫度場的一般關系式，將對流換熱的場協同強化原則擴展至湍流換熱。 -
Time averaged temperature distributions on rotor surface will greatly change with the hot streak / airfoil ratio, and the temperature distribution changes more on the pressure surface than that on the suction surface of the rotor
改變熱斑數與導葉通道數比會對動葉時均溫度分佈產生較大影響，動葉壓力面溫度分佈所受的影響更大。 -
At last, three - dimensional mathematical model of gas - particle two phase turbulence was established, and it was adopted to study the gas - particle two phase rectangular jet as well. the distribution of the time - averaged velocity and turbulence intensity was studied, and some of the simulation results were compared with the experimental results ; the coherent structure of flow field was described in the three direction, the evolution and motion of the eddies was discussed too ; the dispersion of fine particles in the three dimensional space was also investigated
全面地分析了矩形射流氣相時均流場的速度、湍流強度的空間分佈規律，並就部分數值模擬結果與實驗結果進行了對比研究;描述分析了氣相流場湍流擬序結構，對流向、橫向和展向三個方向旋渦的空間結構特點進行分析研究，並分析了流向渦隨時間變化的發展、運動規律。 -
The numerical simulation was made on this kind of energy dissipator by using the k - s turbulence model, the full - field distribution of the time - averaged parameter and the turbulence parameter are described in detail, the calculated time - averaged pressure has good agreement with the experimental results, some advice can be provided for the further study and application in this thesis, especially the calculated results can be used to check the lowest time - averaged pressure
本文對洞塞式消能工採用軸對稱的k -模型進行了數值模擬，數值模擬結果詳細地描述了時均流參數和紊動參數的全場分佈，計算所得的壁面時均壓力結果與實驗結果相吻合，獲得了實體試驗難以獲得的流動特徵。可供這種消能工的進一步研究和應用提供參考，特別是可用於檢驗壓力最低點的大小。 -
And then simulations of gas - particle two phase plane wake and gas - particle two phase plane jet were carried out by using this model. after numerical simulations of the two flow fields were finished, series of analytical work was done. first, the distribution of time - averaged velocity, turbulence intensity was analyzed, and some of the simulation results were compared with those of the experiments ; the coherent structure of vortices in the near wall region of the plane wake flow were studied by describing the evolution of the eddy structures, including the forming, developing and shedding from the wall of the vortices in the near wall region ; the coherent structure of vortices in the whole field was also studied, such as the forming, developing, moving, pairing and merging of the eddies etc.
在對上述兩種流動形態的二維大渦模擬研究中，首先全面地分析了氣相時均流場的速度、湍流強度的分佈規律以及氣相速度的脈動規律等並就部分數值模擬結果與實驗結果進行了對比研究；分析了平面尾跡流場中近壁處旋渦擬序結構，全面和逼真地反映了近壁處旋渦的生成、發展和脫落的規律；描述分析了平面尾跡流和平面射流的全場流動旋渦擬序結構，從整個流場的角度反映旋渦的生成、發展、運動以及旋渦之間相互配對、合併的作用規律等。 -
The calculation formulas for velocity coefficients 2 and 5 for the throat and throat inlet section were deduced from the theoretical research on the velocity coefficients in time - averaged basic equations by use of the unsteady momentum equation and time - averaged value calculation method
摘要運用非恆定的動量方程和時均值計算方法，對脈沖液體射流泵時均值基本方程中的流速系數進行了理論研究，推導出了喉管和喉管進口段流速系數2和5的計算式。 -
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。 -
Abstract : the influence of the main factors on device efficiency of pulsedliquicd jet pump with gas - liquid piston is analysed, the theoretical equation and its time - averaged solution of pulsed liquid jet pump device efficiency are derived
文摘:對影響氣液活塞式脈沖液體射流泵裝置效率的主要因素進行分析，導出了脈沖液體射流泵裝置效率理論方程及其理論方程的時均解。 -
Experimental researches of characteristics of hydrodynamics pressure and cavitation on the front of aeration - baffle have been done so as to obtain the distributions of the fluctuating pressure and time - averaged pressure
通過對齒墩墩頭的動水壓強及空化特性的研究，得到了時均壓強和脈動壓強分佈規律。 -
Variations in pressure with and without aeration in cavitation region are measured and the compressible characteristics of pressure waveforms and relation between mach number and compression ratio are analyzed ; the time - averaged pressure profiles of different air concentration in cavitation erosion region are measured, the variations of the pressure with air concentration and effects of back pressure on cavitation erosion are analyzed ; the relations between least air concentration to prevent cavitation erosion and flow velocity are proposed ; the cavitation numbers with and without aeration in cavitation region are compared
實測了空化區摻氣前後壓力的變化，分析了壓力波形的可壓縮流特徵以及馬赫數與壓縮比的關系；實測了空蝕區不同摻氣濃度的時均壓力分佈，分析了壓力隨摻氣濃度的變化及背壓對空蝕的影響；提出減免空蝕的最低摻氣濃度與流速的關系，比較了摻氣前後水流的空化數。 -
Analyzing the materials, decide on the application of reynolds time - averaged control equations and k - e two - equation turbulent mode, and using bfc, staggered grid to disperse the n - s control equation with fvm
採用工程實際應用廣泛的湍流模型即基於雷諾時均方程和k -雙方程湍流模型，採用貼體坐標和交錯網格系統對n - s方程用有限體積法進行離散。 -
Based on the unproved vof method, parametric studies have been carried out for random wave slamming on open piled wharf by numerical simulation. the governing equations are reynolds time - averaged equations and two equations k - model
為能反映出波浪沖擊過程的湍流特徵，以湍流運動方程? ?雷諾方程，及修正的?模型封閉雷諾方程為控制方程。 -
According to the experimental data of the time averaged performance and the geometric size of the pulsed liquid jet pump, an empirical formula for the fundamental performance of this kind of pump is proposed
依據脈沖液體射流泵時均值性能試驗數據和其幾何尺寸，經分析與計算給出了脈沖液體射流泵時均值基本性能的經驗公式。 -
The current cfd soft wares were introduced. secondly, there were the correlative knowledge about the time averaged reynolds equation, the criterion k ? model, the simple method, the technology of unstructured mesh, the terminal condition and the modeling method
詳細分析與本文研究相關的雷諾時均方程、標準k -模型、 simple計算方法、非結構網格技術、邊界條件以及所用到的幾何建模方法。 -
The distributions of time - averaged particle velocity and concentration were obtained
得到了時均顆粒速度和濃度的分佈。 -
The calculating results of time - averaged efficiency of pullsed liquid jet pump are approximately in agreement with the experimental results in our and foreign countries
脈沖液體射流泵時均效率的計算結果與國內外的試驗結果基本一致。
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