|
|
【答案】应助回帖
qinyaju(金币+10, 博学EPI+1): 谢谢，还是你比较厚道，谢谢！ 2011-11-28 09:50:51
有道翻译如下，还真跟二楼兄弟一样，哈哈。建议楼主去翻译版求助。
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. |
|
回复此楼