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qinyaju新蟲 (初入文壇)
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論文摘要中譯英
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要求：句式簡潔，認真翻譯，可追加懸賞 目前，國內外很多研究者正在研究一種新型的強化傳熱技術一縱向渦發(fā)生元強化傳熱技術。設計合理的縱向渦流發(fā)生元可以明顯提高換熱效果，也可起到流動減阻的效果，因此利用縱向渦發(fā)生器誘導渦來減薄或破壞流體邊界層，是一種有效強化氣側換熱的措施，不僅可以提高換熱設備的效率、還可以減少設備的重量和體積，加工簡單方便，符合節(jié)能技術的要求。因此，作為一種有效的被動式強化傳熱技術，縱向渦發(fā)生器正被越來越廣泛地應用于各種強化換熱領域。 本文通過數(shù)值模擬對一種新型組合矩形翼渦流發(fā)生器放置在矩形通道與波紋翅片通道的流動與換熱特性進行了研究。對于矩形通道，研究了雷諾數(shù)為2000～16000的情況，分別對未放置縱向渦發(fā)生器、放置矩形翼及組合翼渦流發(fā)生器的情況進行研究，結果發(fā)現(xiàn)：組合翼比矩形翼具有更加的換熱性能，當組合翼主翼攻角、輔翼攻角、輔翼到主翼前面的距離、輔翼到底面的距離、輔翼長度、輔翼高度變化時，通道的換熱性能與綜合換熱性能表現(xiàn)了不同的特性。對于波紋翅片通道，研究了進口流速范圍為0.8051m/s～4.0257m/s的情況，并對除在矩形通道中研究的組合翼各尺寸還包括主翼長度與主翼寬度在內的參數(shù)進行了分析，結果表明：這些參數(shù)對波紋翅片的換熱與綜合換熱的影響情況有相似的，也有大不一樣的。 觀察通道中流體流動發(fā)展可以看出：流體在縱向渦發(fā)生器附近產(chǎn)生了多個漩渦，隨流體沿流向發(fā)展多個渦旋逐漸移動、融合，最后形成一個大的逆時針漩渦。通過對比發(fā)現(xiàn)：組合翼比矩形翼產(chǎn)生的渦旋多、影響范圍廣、強度大；當渦流發(fā)生器附近的漩渦在通道左邊成上下布置，且最后形成的大漩渦由左上向右下發(fā)展時，通道的綜合性能較好；當渦流發(fā)生器附近的漩渦在通道左邊成左右布置，且最后形成的大漩渦一直在通道中間位置時，通道的強化換熱性能較好。 |
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xinmor
至尊木蟲 (職業(yè)作家)
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【答案】應助回帖
qinyaju(金幣+10, 博學EPI+1): 謝謝，還是你比較厚道，謝謝！ 2011-11-28 09:50:51
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有道翻譯如下，還真跟二樓兄弟一樣，哈哈。建議樓主去翻譯版求助。 At present, many researchers are working on a new type of heat transfer enhancement technology a longitudinal vortex happen yuan strengthen heat transfer technology. To design the reasonable vertical eddy current happen yuan could evidently increase the heat transfer effect, also can have the effect of flow friction reduction, so use of longitudinal vortex generator vortex induced to thinning or destroy the fluid boundary layer, it is a kind of effective strengthen gas in heat side measures, not only can improve the efficiency of heat exchange equipment, still can reduce the weight and volume of the equipment, processing is simple and convenient, accord with energy conservation technology requirements. So, as a kind of effective passive strengthen heat transfer technology, longitudinal vortex generator is being more and more widely used in different kinds of improved heat transfer area. This article through numerical simulation to a new type composite rectangular wing placed in a rectangular passage vortex generator with corrugated fin channel flow and heat transfer characteristics. For rectangular passage, and studies the Reynolds number for 2000 ~ 16000, which have not placed the longitudinal vortex generator, placed rectangular wing and composite wing of the vortex generator, and found that: combination with more than rectangular wing wing of the heat transfer performance, when combination wing main wing attack Angle, auxiliary wing attack Angle, auxiliary wing to the front wing of the distance and auxiliary wing exactly the distance, auxiliary wing length, auxiliary wing height change, channel heat performance and comprehensive heat transfer performance of different characteristics. For corrugated fin channel, the import velocity range of 0.8051 m/s ~ 4.0257 m/s situation, and in addition to the rectangular channels in study of various sizes including combination wing main wing length and width of the main wing, parameters were analyzed, and the results show that: the parameters of the corrugated finned heat exchange and the integrated heat transfer effect of a similar, also have very different. Watch channel fluid flow development can see: fluid in the longitudinal vortex generator generated more than the near vortex, with fluid flow along the development more mobile, fusion vortex gradually, and finally form a huge counterclockwise vortex. Through the contrast found: combination than rectangular wing of the wing produced more than scroll, influence range, strength; When vortex generator of vortex in the tunnel near the up and down to decorate, and the final shape of the big by upper left right lower development to the vortex, channel the comprehensive performance is better; When vortex generator of vortex in the left channel near layout, and the final shape of the big vortex in the channel has been middle position, the strengthening of the channel heat exchange good performance. |
5樓2011-11-28 00:36:45
【答案】應助回帖
|
At present, many researchers are working on a new type of heat transfer enhancement technology a longitudinal vortex happen yuan strengthen heat transfer technology. To design the reasonable vertical eddy current happen yuan could evidently increase the heat transfer effect, also can have the effect of flow friction reduction, so use of longitudinal vortex generator vortex induced to thinning or destroy the fluid boundary layer, it is a kind of effective strengthen gas in heat side measures, not only can improve the efficiency of heat exchange equipment, still can reduce the weight and volume of the equipment, processing is simple and convenient, accord with energy conservation technology requirements. So, as a kind of effective passive strengthen heat transfer technology, longitudinal vortex generator is being more and more widely used in different kinds of improved heat transfer area. This article through numerical simulation to a new type composite rectangular wing placed in a rectangular passage vortex generator with corrugated fin channel flow and heat transfer characteristics. For rectangular passage, and studies the Reynolds number for 2000 ~ 16000, which have not placed the longitudinal vortex generator, placed rectangular wing and composite wing of the vortex generator, and found that: combination with more than rectangular wing wing of the heat transfer performance, when combination wing main wing attack Angle, auxiliary wing attack Angle, auxiliary wing to the front wing of the distance and auxiliary wing exactly the distance, auxiliary wing length, auxiliary wing height change, channel heat performance and comprehensive heat transfer performance of different characteristics. For corrugated fin channel, the import velocity range of 0.8051 m/s ~ 4.0257 m/s situation, and in addition to the rectangular ? Watching channel fluid flow development can see: fluid in the longitudinal vortex generator generated more than the near vortex, with fluid flow along the development more mobile, fusion vortex gradually, and finally form a huge counterclockwise vortex. Through the contrast found: combination than rectangular wing of the wing produced more than scroll, influence range, strength; When vortex generator of vortex in the tunnel near the up and down to decorate, and the final shape of the big by upper left right lower development to the vortex, channel the comprehensive performance is better; When vortex generator of vortex in the left channel near layout, and the final shape of the big vortex in the channel has been middle position, the strengthening of the channel heat exchange good performance. |
2樓2011-11-23 16:35:41
qinyaju
新蟲 (初入文壇)
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- 專業(yè): 傳熱傳質學
3樓2011-11-26 09:34:28
4樓2011-11-26 12:31:36
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