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要求：句式简洁，认真翻译，可追加悬赏 目前，国内外很多研究者正在研究一种新型的强化传热技术一纵向涡发生元强化传热技术。设计合理的纵向涡流发生元可以明显提高换热效果，也可起到流动减阻的效果，因此利用纵向涡发生器诱导涡来减薄或破坏流体边界层，是一种有效强化气侧换热的措施，不仅可以提高换热设备的效率、还可以减少设备的重量和体积，加工简单方便，符合节能技术的要求。因此，作为一种有效的被动式强化传热技术，纵向涡发生器正被越来越广泛地应用于各种强化换热领域。 本文通过数值模拟对一种新型组合矩形翼涡流发生器放置在矩形通道与波纹翅片通道的流动与换热特性进行了研究。对于矩形通道，研究了雷诺数为2000～16000的情况，分别对未放置纵向涡发生器、放置矩形翼及组合翼涡流发生器的情况进行研究，结果发现：组合翼比矩形翼具有更加的换热性能，当组合翼主翼攻角、辅翼攻角、辅翼到主翼前面的距离、辅翼到底面的距离、辅翼长度、辅翼高度变化时，通道的换热性能与综合换热性能表现了不同的特性。对于波纹翅片通道，研究了进口流速范围为0.8051m/s～4.0257m/s的情况，并对除在矩形通道中研究的组合翼各尺寸还包括主翼长度与主翼宽度在内的参数进行了分析，结果表明：这些参数对波纹翅片的换热与综合换热的影响情况有相似的，也有大不一样的。 观察通道中流体流动发展可以看出：流体在纵向涡发生器附近产生了多个漩涡，随流体沿流向发展多个涡旋逐渐移动、融合，最后形成一个大的逆时针漩涡。通过对比发现：组合翼比矩形翼产生的涡旋多、影响范围广、强度大；当涡流发生器附近的漩涡在通道左边成上下布置，且最后形成的大漩涡由左上向右下发展时，通道的综合性能较好；当涡流发生器附近的漩涡在通道左边成左右布置，且最后形成的大漩涡一直在通道中间位置时，通道的强化换热性能较好。 |
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【答案】应助回帖
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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楼2011-11-23 16:35:41
3楼2011-11-26 09:34:28
4楼2011-11-26 12:31:36
xinmor
至尊木虫 (职业作家)
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【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
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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. |
5楼2011-11-28 00:36:45
xinmor
至尊木虫 (职业作家)
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6楼2011-11-28 11:11:48
ren911
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7楼2011-11-29 15:10:18
xuleipanda
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8楼2011-11-29 15:42:28