Heat Transfer Analysis in a Channel Mounted with In-Line Downward-Facing and Staggered Downward-Facing Notched Baffles

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dc.contributor.authorPhila, A.
dc.contributor.authorKeaitnukul, W.
dc.contributor.authorKumar, M.
dc.contributor.authorPimsarn, M.
dc.contributor.authorChokphoemphun, S.
dc.contributor.authorEiamsa-Ard, S.
dc.date.accessioned2026-08-06T10:52:04Z
dc.date.available2026-08-06T10:52:04Z
dc.date.issued2025-09-01
dc.description.abstractThis study presents a comprehensive analysis of heat transfer enhancement, flow resistance, and thermal performance in rectangular channels equipped with three baffle configurations: conventional transverse baffles (TBs), in-line downward-facing notched baffles (IDF-NBs), and staggered downward-facing notched baffles (SDF-NBs). The influence of the pitch-to-baffle height ratio (P/e), ranging from 2.0 to 10, was examined across Reynolds numbers from 6000 to 24,000. Results indicate that a P/e ratio of 6.0 consistently yielded the highest Nusselt numbers across all configurations. While the TB configuration produced significant heat transfer at P/e= 6.0, it experienced a substantial friction penalty, with its best thermal enhancement factor (TEF = 1.168) observed at P/e = 8.0. The IDF-NB configuration achieved optimal performance at P/e = 6.0 with a TEF of 1.257, offering a better balance between heat transfer and flow resistance. The SDF-NB arrangement outperformed all other cases, delivering the highest Nusselt number (Nu = 116.9), TEF (1.362), and improved flow reattachment, primarily due to enhanced mixing from the staggered layout. These findings demonstrate that the staggered notched baffle configuration at P/e = 6.0 offers the most effective thermal performance enhancement among the configurations studied.
dc.identifier.citationEng, 6(9), 2025
dc.identifier.doi10.3390/eng6090229
dc.identifier.issn26734117
dc.identifier.other2-s2.0-105017427227
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/17210
dc.sourceEng
dc.subjectchannel
dc.subjectheat transfer
dc.subjectin-line downward-facing notched-baffles
dc.subjectstaggered downward-facing notched-baffle
dc.subjectthermal enhancement factor
dc.titleHeat Transfer Analysis in a Channel Mounted with In-Line Downward-Facing and Staggered Downward-Facing Notched Baffles
dc.typeArticle

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