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Influence of divergence tapered V-baffles on heat transfer behaviors in a rectangular channel
Author(s)
Keaitnukul, Warin
Pingta, Supapat
Phila, Arnut
Wongcharee, Khwanchit
Maruyama, Naoki
Hirota, Masafumi
Eiamsa-Ard, Smith
Date Issued
May 15, 2026
Type
Conference Paper
Abstract
This study examines the effects of Divergence Tapered V-Baffle (henceforth DT-VB) regarding the heat transfer and friction loss behavior within the rectangle-shaped duct. The baffle attack angles (α) were set at 45°, 60°, 75°, and 90°. The experimental results indicated that as Reynolds numbers increased, the Nusselt numbers exhibited an upward trend, while the friction values showed a corresponding decrease. The Nusselt number improved consistently as the attack angle decreased, with baffles at a 60° attack angle producing the highest friction loss, followed by those at 45°, 75°, and 90°. Among the configurations tested, the 45° attack angle demonstrated the best thermal performance due to its relatively low friction loss and enhanced heat transfer. The highest thermal performance factor (TPF) of 2.13 was attained at a 45° attack angle and a Reynolds number of 6,000.
Citation
Aip Conference Proceedings, 3434(1), 2026