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laoniu0714金蟲 (小有名氣)
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[求助]
求助論文摘要 急急急 大神們幫幫忙。。。。。。
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本文對圓管、橢圓管和滴形管的管外空氣側的流動進行數值模擬比較三種強化換熱管的換熱性能的優(yōu)劣,得出滴形管的流動與傳熱綜合性能較優(yōu),橢圓管次之,圓管較差的結論,并利用場協(xié)同原理對模擬結果進行分析,驗證了數值模擬結果的正確性。根據換熱性能分析標準定義了無量綱參數N0來綜合評價換熱表面的強化換熱效果,得出和場協(xié)同原理相似的結論。 、 |
金蟲 (小有名氣)
| The author gives us a numerical simulation on the air motion outside the tube about circular tube, elliptical tube and dropwise tube, making comparisons on the heat transfer function of three different heat exchangers. Then the author gets the conclusion that the air motion and comprehensive heat transfer function of the dropwise tube are the best, then comes the elliptical tube, and the lest one is circular tube. Then the author making analysis by the field synergy principle and verify the conclusion. According to the heat exchange performance analysis standard, the author defines the dimensionless parameter N0. to evaluate the heat transfer function of heat exchange surface, and reaches a similar conclusion with field synergy principle. |
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