normal jet 中文意思是什麼
normal jet
解釋
標準氣動量規-
The thermal visualizations of jet impingement cooling with single or double row holes inside semi - enclosed channel are measured by using infrared camera and then the impingement cooling heat transfer coefficients are deduced. the effects of flow and geometry parameters on convective heat coefficients are obtained. the results show that : for a single row normal impingement, the impingement cooling effectiveness is enhanced with the increase of impinging reynolds number or the decrease of hole space to diameter ratio, and the best effectiveness is achieved under the jet - to - surface spacing equals to 2 ; when the jet is oblique to the confined wall, the cooling effectiveness is weaken especially under the jet - to - surface spacing ratio is greater than 2 ; for double rows normal impingement cooling, the cooling effectiveness of rear row jet is weaker than the front row under lower impinging reynolds number or bigger jet - to - surface spacing
對于單排垂直射流，沖擊冷卻效果隨射流雷諾數的增加、孔間距與直徑比的減小而得到提高，沖擊間距比為2時換熱效果最好;沖擊孔中心線向通道封閉一側傾斜后，射流沖擊冷卻的范圍變窄，當沖擊間距比大於2時駐點區的對流換熱能力明顯降低;對于雙排沖擊射流，孔排間距與直徑比的增加使沖擊冷卻范圍變大，但在兩排孔之間區域的對流換熱系數有所下降;在較小的沖擊射流雷諾數和較大的沖擊間距比下，後排射流的沖擊換熱效果要遜於前排射流。 -
The experiment took water as the medium and experiments on two jet modes were carried out under the falling film vacuum evaporating. the experimental results indicated that the two ejectors in series compensation method could adjust the variational work situation due to the decrease of primary steam or secondary steam and insure the normal production. at the same time, the ejector ' s best work situation founded in the experiment would provide reference for ejector ' s design and usage
本實驗建立了一套降膜真空蒸發裝置，以水為介質，對變工況下單級和串聯噴射熱泵蒸發進行了實驗，結果表明兩級串聯補償噴射裝置能對由引射蒸汽和工組蒸汽壓力降低所造成的混合蒸汽壓力降低進行調節，達到了變工況下正常生產的目的。 -
The micro jet experiment is under conditions of 3 different heights, 2mm, 3mm and 5mm of 2d ( 2 dimensional ) rectangle jet outlet and the width of each is same, 20mm. 5 reynolds numbers vary from 20, 000 to 55, 000. the experiment characters tell that compared with that of the normal scaled jet flow, the dilution power of this micro jet becomes weaker
微射流實驗在出口寬度固定為20mm情況下，選取了3種不同出口高度: 2mm ， 3mm和5mm ，並通過改變速度使出口高度雷諾數在約20000到約55000之間改變，實驗得到了流動圖譜和微射流數學模型。 -
Used the theory of air - dynamic and the jet - ejector principle the characteristic of jet - steam, proving the noise signal have the character of chaos by using the fractal theory. noise sound pressure on the normal condition was checked by theory formula and contrasted with the experimental data. the difference was analyzed in detail
結合空氣動力學噴射氣流噪聲理論公式，驗算了三效降膜蒸發器正常生產時熱壓泵中拉伐爾管噴口處的噪聲聲壓級，與實測值進行對比，並詳細分析了兩者產生較大差異的原因。 -
Jet normal pressure
噴射正常壓力 -
They are 45 e, 90 e, 105 e, 125 eand 150 e. mascarene high is weaker ( stronger ) and australia high is stronger ( weaker ) than normal in the el nino ( la nina ) years, which cause summer 850hpa somali jet weaker ( stronger ) and the cross equator flows of 90 e, 105 e, 125 e and 150 e are stronger ( weaker ) than normal in the el nifio ( la nina ) years
東半球夏季低空越赤道氣流強度的年際變化和enso循環密切相關， elnif （ ? ） o年夏季馬斯克林高壓減弱，導致索馬里越赤道氣流變弱，而澳大利亞高壓加強， 105 e及其以東的越赤道氣流明顯加強， lani （ ? ） a年則相反。
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