ABSTRACT

The present study examines the flow and thermal characteristics of a tube containing perforated conical inserts by varying the Reynolds number in the range of 4000–20000. The perforated conical insert having (d/D) ratio of 0.3, (p/D) ratio of 2, (x/L) ratio of 0.25, and N = 6 showed the minimum entropy generation. Second law analysis showed that the solid inserts of a lower pitch to diameter ratio are suitable to transfer high energy transfer at lower Reynold’s number, whereas the perforated conical inserts are found to be effective at higher Reynolds numbers. Empirical correlations are developed for solid and perforated conical inserts.

中文翻译：

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带孔锥形嵌件管的传热增强和熵产生分析

摘要

本研究通过在 4000-20000 范围内改变雷诺数来检查包含穿孔锥形插件的管的流动和热特性。(d/D) 比为 0.3、(p/D) 比为 2、(x/L) 比为 0.25 和 N = 6 的穿孔锥形插入物显示出最小的熵产生。第二定律分析表明，具有较低螺距直径比的实心刀片适合在较低雷诺数下传递高能量，而穿孔锥形刀片在较高雷诺数下有效。为实心和穿孔锥形刀片开发了经验相关性。