air distribution velocity 中文意思是什麼

air distribution velocity 解釋
空氣分佈速度
  • air : n 1 空氣，大氣。2 天空，空中。3 微風，和風。4 態度，樣子，風度，氣派；〈pl 〉高傲的架子。5 傳播，...
  • distribution : n 1 分配，分發，配給；分配裝置[系統]；配給品；配給量；【經濟學】配給方法，配給過程；分紅；【法律...
  • velocity : n. 1. 迅速；快速。2. 速度，速率。3. 周轉率。
  1. Firstly, simulate flow field of rear smoke channel, plot velocity magnitude and ash concentration distribution in section of entry of heat pipe air preheater, compare with data which were measured in guiyang power station, verify simulation to be reasonable and right. secondly, simulate all kinds of factors which affect flow field ' s uniformity such as length, thickness, location of diffluent board, ash concentration, ash diameter, and so on, find the chiefly factors. thirdly, install guide board in curve channel in rear smoke channel, then simulate its " flow field, plot velocity magnitude and ash concentration distribution

    在此基礎上模擬在冬夏兩季不同情況下，不同流速對熱管空氣預熱器壁面溫度的影響；然後對影響整個流場分佈的各種因素：包括分流板長度、厚度、偏離中心流道位置的偏離度、飛灰濃度、飛灰粒徑等因素進行數值模擬；最後提出在分流煙道轉彎處加裝導流板，並模擬加裝導流板后的流場分佈，得到下級空氣預熱器出口、熱管空氣預熱器進口處的斷面速度場分佈、濃度場分佈，以論證加裝導流板能達到流場均勻化的作用。
  2. Using the post processing tools of this cfd software, this article analyses the temperature and velocity field in the vav air - conditioned office and finally evaluates the indoor air distribution, adopting air diffusion performance index ( adpi )

    利用cfd軟體的后處理工具對不同送風方式以及不同工況下的變風量空調室內的溫度場和速度場進行了分析，最後採用空氣分佈特性指標對空調室內的氣流組織進行了綜合評價。
  3. In this thesis hydraulic experimental studies and theoretical analyses on the vortex - flow drop shaft were conduced and the following results were accomplished : ( 1 ) in the model test some hydraulic characteristics including the shape of air core in the center of the drop shaft, the radial distribution of water flow velocity and the distribution of pressure on the wall of the drop shaft were measured under the condition of high water head above 250m and large discharge above 1400m3 / s. ( 2 ) a kind of computational method for the spiral water flow in the air core region of drop shaft was discussed and applied and the results agree the experimental data well. ( 3 ) the total ratio of energy dissipation in the drop shaft can reach 90 % and the energy dissipation in every region was discussed quantitatively

    本文通過試驗研究與理論分析對旋流式豎井泄洪洞應用於高水頭、大泄流量情況時存在的一些水力學問題進行了研究和探討，取得以下主要成果：一、結合小灣工程導流洞改建，對高水頭（ 252m ） 、大泄流量（ 1400m ~ 3 s ）條件下旋流式豎井中的水流運動特徵進行了比較全面的測量，包括空腔形態、徑向流速分佈及井壁壓強等；二、提出了豎井空腔段螺旋水流水力計算方法，其計算結果與實測值吻合良好；三、利用試驗與計算結果，對旋流式豎井的消能機理進行了探討，對豎井各部分的消能能力有了總體認識；四、對豎井下部消力井的合理井深進行了優化試驗研究，發現消力井合理深度為0 . 9d左右；五、通過試驗研究，歸納出豎井水流總摻氣量估算方法，為導流洞排氣方案的設計提供了參考依據；六、在高水頭、大流量條件下，豎井空腔段下部流速很高，盡管水流螺旋運動引起的離心力可以確保井壁壓強保持正壓，但空化數依然較低，因此豎井的空化空蝕始終是工程界關注的重大問題。
  4. Effect of inlet - air velocity distribution on performance of evaporative condenser

    來流流場對蒸發式冷凝器性能影響的研究
  5. Through the research work of this article, it is shown that cfd technology can efficeintly instruct the design of indoor air distribution and evaluate indoor air quality and ventilating effect ; the distribution of heat sources have great impact on indoor air distribution ; under variable air volume condition, the indoor temperature and velocity fields are quite even and the thermo - environment is relatively good when using diffusers with coanda effect such as square diffuser and slot diffuser to supply air

    經過本文研究發現，利用cfd技術可以有效地對空調室內氣流組織設計進行指導，全面對室內空氣品質和通風效果進行評價。熱源分佈對于空調室內的氣流組織具有極其重大的影響。在變風量條件下，利用具有良好貼附效應的送風口如方型散流器和條縫風口送風，空調室內的溫度場和速度場較均勻，室內的熱環境良好。
  6. By the numerical simulation, calculate the distribution of velocity ^ temperature and contaminant concentration of air in the room under different modes of air flow organization, and through analysing the outcomes of simulation, draw some conclusions

    對常見的辦公室環境，不同送回風方式下的室內空氣的速度、溫度及污染物濃度的分佈進行模擬計算，並對模擬結果進行分析，得出結論。
  7. A reasonable position of driving nozzle helps to achieve the maximum material flow that also depends on other parameters such as backpressure, properties of conveyed material and driving gas. it is observed that, an increase of convergent section angle is harmful to the pneumatic conveying system, and also influences on the mass flow rate of conveyed material, the distribution of static pressures in injector and the pressure drops of conveying pipe. in addition, within a reasonable scope of air mass rate, increasing the driving jet velocity is more advantageous than enlarging the dimension of driving nozzle

    試驗研究發現，氣體噴嘴位置對氣固噴射器的輸送能力影響最大，氣體噴嘴存在某一最佳位置，而這一最佳位置與背壓、輸送物料特性和輸送風特性相關聯；氣固噴射器的收縮角對其輸送能力、內部靜壓分佈和輸送管阻力特性均有適量影響，收縮角增大對整個輸送系統均不利；在適當的輸送風范圍內，提高氣體噴嘴出口速度比擴大氣體噴嘴尺寸更為有利，但氣體噴嘴出口速度過高會增加氣固噴射器和輸送管內的能量損耗，給輸送帶來不利的影響；系統背壓與氣固噴射器的氣體噴嘴出口速度的選取有關。
  8. Three experimental models were constructed, on the basis of the distribution and diffuse of the main production dust source. the experiments of dust transport and concentration distribution were done for many times, then show that the air velocity and dust distribution are the key factors which control dust distribution of the area nearby dust source

    根據礦井主要生產性塵源的分佈及發塵特徵，構建了3種實驗模型進行粉塵運移和濃度分佈實驗.結果表明，風速和塵源是決定塵源附近區域粉塵分佈的關鍵因素.圖8 ，表2 ，參3
  9. Then the air distribution system of the above - mentioned hotel ' s multi - function - hall was simulated with fidap, and the indoor temperature and velocity under the preliminary option was calculated. under the half - load condition of small air - supply quantity and slow velocity, finds that the problem has arisen, which the cold jets fall too fast in summer and the air distributes layer upon layer in winter

    然後應用fidap對上述旅館的多功能廳空調氣流組織初步方案進行了數值模擬計算，預測了該初步方案的室內溫度、速度分佈，發現在送風量和送風速度小的半負荷工況下，會出現夏季送風時冷射流過早下降，冬季送風時氣流分層分佈的現象。
  10. The porous diffusion type silencer is widely used to reduce the air flow noise because of its small volume and high noise attenuating ability. the out case of the silencer plays a very important role in reducing noise. the effect of the hole ' s shape, diameter and the distance between neighboring holes as well as the matchup between the case and the sound absorbing material tube are investigated experimentally. the relation between the out - flow noise and the gas velocity distribution is carefully studied for two different kinds of matchup between the case and the sound absorbing material tube. some useful results are gotten, which may be valuable to the design of the silencer

    多孔擴散型消聲器由於其體積小、消聲性能高而廣泛應用到排氣噪聲的降低上，其外殼對消聲器的消聲性能具有重要作用.本文對此類消聲器外殼的孔型、孔徑和孔距以及外殼同消聲材料的配合方面進行了細致的實驗研究，特別對外殼與消聲材料的配合與其排放噪聲以及外部流場之間的關系進行了探討，得到了一些有用的結論，對消聲器性能的提高具有一定指導意義。
  11. The experiment acquired pressure distribution and circulating rate under three fluidizing velocity ( 3. 5m / s 、 4. 5m / s 、 5. 5m / s ) and different media load. an experimental equation was acquired between circulating rate and the distribution of the pressure. and the relation between the circulating rate and the opening rate of the valve connecting the returner and the ehe was carefully discussed as well as the relation between the pressure of the ehe and the flow rate of the fluidizing air

    得到三種流化風速下（ 3 . 5m / s 、 4 . 5m / s 、 5 . 5m / s ）不同裝料量所對應的主床床體壓力分佈和物料循環量，得到循環量與壓力的分佈和流化風速的本實驗臺上的經驗公式，並通過測量返料器通向外置換熱器機械閥開度和返料量的關系，得到旋風分離器中下落物料進入換熱器和直接進入主床的比例關系，同時測得換熱器中壓力和送風量的關系。
  12. According to thermal state similitude model experiment of the langya mountain hydropower station, we adopt different velocity of air ventilation and exclude air proportion of upriver and downriver, this paper contrast the air distribution of the dynamo floor on each method, and educe the best projects of arch crest supply air that adapt to langya mountain hydropower station ’ s dynamo floor : g = 17. 4 10 ~ 4m ~ 3 / h, 22 vents, d = 600mm, the scale of volume 1 : 3, t0 = 16. 9. it ’ s also thought that improved any side of volume can reduce its temperature. when study on the air supply of langya mountain hydropower station ’ s underground dynamo floor by cfd software, it proved that cfd software is correct when compare with model experiment. when arrange the number of 5 kinds of vents, it concluded that the number of vents 14 to 22, it can ’ t change velocity, in 36 to 40 can lead to reduction of velocity. when vent in 14 to 36, the parameter kt doesn ’ t change, when the number is as large as 36, kt reduces

    在此基礎上，模擬了5種風口布置方案和送風量的改變對發電機層溫度場和速度場的影響，獲得了些可供參考的結論:在風量和送風速度不變的條件下，風口個數在（ 14 ~ 22 ）小范圍變化時，工作區平均風速基本不變，大幅度增加風口個數（ 36 ~ 44 ）就會導致工作區平均風速的降低，風口數在14 ~ 36之間對工作區的溫度不均勻系數影響不大，當風口數> 36時，溫度不均勻系數隨著風口數的增多而變小，速度不均勻系數一直隨著風口數的增加而減少;在風口布置和尺寸不變的情況下，送風量變化時，工作區平均溫度隨送風量增大而降低，平均溫度的降低量逐漸趨于減少，能量利用系數先是隨著送風量的增加而增大，后隨送風量增加而減少。
  13. There is no thoroughly rounded theory about displacement ventilation system in our country at present and our research begins recently. the study work of this paper will be useful for further optimization design of displacement ventilation system. this dissertation includes five parts. the first part introduces the development of the displacement ventilation and the background of research in domestic and oversea. in the second part, it gives working principle of displacement ventilation system and it ’ s advantages to the mixture ventilation. the study also gives a series of indexes to evaluate displacement ventilation system and specifies air supply terminal device and so on. it is needed to simulate and analyse the velocity field, temperature field and distribution of flow field. this is the third part. the forth part specifies the simulative method for thermal stratification of displacement ventilation system. it gives some factors affecting thermal stratification height such as inlet temperature, inlet velocity, heat transfer of wall body, distance of heat source and so on

    本文的研究工作主要包括以下幾個方面的內容: （ 1 ）綜述了國內外相關的研究現狀和研究背景; （ 2 ）簡介了置換通風的工作原理，並分析了它相對于混合通風的優良特性及評價指標、末端裝置等; （ 3 ）對採用置換通風方式房間的溫度場、速度場和氣流分佈進行了模擬計算與分析; （ 4 ）對採用置換通風方式房間的熱力分層高度進行了模擬計算，並分析其影響因素，如:送風溫度、送風速度、圍護結構傳熱和熱源分佈等; （ 5 ）擬合了無量綱熱力分層高度相應于送風溫度t 、送風速度v 、熱源間距離l和圍護結構傳熱q的經驗公式。
  14. There will appear a very uneven flow field, and appear a very big velocity magnitude distribution and ash concentration distribution near back wall. thus, the velocity magnitude is far bigger than that of optimal design velocity magnitude, which will lead to serious wear and tear in metal face of heater. especially, because of curve structure in front of heat pipe air preheater, there is more serious wear and tear

    由於靠近豎井后墻面的煙氣流速很大，飛灰濃度也較大，斷面速度分佈的最大速度大於最佳設計速度的2 - 3倍，這樣將造成受熱面的嚴重磨損，特別是熱管空氣預熱器前端煙道的幾何結構有一定的轉角，更增加了磨損的程度。
  15. As a result, the air temperature distribution can not meet the design demand, and the air velocity exceeds the demand value in the design code with original scheme, and with the improved scheme of the same air flow and more air outlets, the distributions of temperature and velocity can meet code requirements

    模擬結果顯示，原方案工作區斷面溫度達不到設計要求，風速超出規范要求，改進方案保持總風量不變，增加了送風口數量，其溫度場和速度場都能滿足規范要求。
  16. In this paper, the technique of computational fluid dynamics ( cfd ) is adopted to simulate the air distribution in the generator hall, the water - turbine hall and switch station. analyzes and compares the distributions of the velocity field, the temperature field and the pmv - ppd in the workshop by different outlets layouts, outlets quantity and outlets size, bring forward applicable scheme for the engineering, provide the basis of the workshop ventilation design

    對不同的風口大小、風口數量、風口布置位置形成的廠房內速度場、溫度場、 pmv - ppd分佈進行了分析對比，提出適合於工程實際的送風方案，並對所選方案的不同運行工況進行了數值模擬研究，為設計及運行實踐提供了依據。
  17. Meanwhile, we adopted air distribution performance index, temperature gradients and average velocity to evaluate and compare room air distribution under various air volumes

    同時，用空氣分佈性能指標、溫度梯度以及室內平均速度對不同送風量下的室內氣流分佈進行了評價和比較。
  18. Through linear regression, experiment data is tidied to linear regression function relation. these relations can be extended to common high space. the result indicates that outlet velocity and outlet diameter have obvious effect on air distribution

    通過線性回歸法將實驗數據整理成以工作區平均溫度為因變量，以各個影響因素為自變量的一元線性回歸函數關系式，這些關系式能夠推廣到一般的高大空間。
  19. However, due to the supplying air volume change corresponding to cooling or heating load change, such phenomena as uneven temperature and velocity distribution often take place, which lead to bad indoor air distribution and thermo - environment

    然而在變風量空調室內，因為送風量隨著室內負荷的變化而變化，經常存在溫度和速度分佈不均勻現象，導致室內不良的氣流組織和不舒適的熱環境。
  20. So, it ’ s of particularity and application value to study the air distribution of the station. according to the air ventilation and air conditioning ’ s model experiment of the thermal environment ’ s peculiarity in the underground powerhouses of the langya - mountain hydropower station, this paper presents the research on the distribution of temperature and velocity in the main underground working units

    本文結合瑯琊山抽水蓄能電站地下主廠房熱態模型試驗項目的後期模型試驗研究任務，進行該電站頂送風地下主廠房通風空調熱環境特性的模型試驗和數值計算，著重對地下主廠房發電機層的氣流組織優化及空間溫度和速度分佈性狀進行研究。
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