Heat transfer enhancement and entropy generation analysis of a tube with perforated conical inserts

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.

Automated summary

This study examines the flow and thermal characteristics of a tube with perforated conical inserts by varying the Reynolds number. It is found that solid inserts with lower pitch to diameter ratio are suitable for high energy transfer at lower Reynolds numbers, while perforated conical inserts are effective at higher Reynolds numbers. Empirical correlations are developed for both solid and perforated conical inserts.