Bükülü Bant Genişliği ve Kalınlığının Boru Akışındaki Akış Karakteristikleri Üzerindeki Etkisinin CFD Analizi
CFD Analysis of the Influence of Twisted Tape Width and Thickness on Flow Characteristics in Pipe Flow

This study investigates the impact of twisted tape geometry on heat transfer performance in pipe flow, focusing on width ratio, thickness, and flow velocity variations. A 25 mm diameter and 1-meter-long pipe were utilized, with water as the working fluid. The analyses considered flow velocities of 0.05 m/s and 0.2 m/s, twisted tape width ratios (20%, 40%, 80%), and thicknesses (0.5 mm, 1 mm, 2 mm). Key parameters such as Reynolds number (Re), Nusselt number (Nu), friction factor (f), and pressure drop (ΔP) were calculated. The results revealed that increasing the width ratio and thickness of the twisted tape significantly influenced the hydraulic diameter, altering the Re and Nu values. Higher width ratios improved heat transfer but increased friction and pressure loss. Similarly, thicker twisted tapes elevated flow resistance, affecting pressure loss and heat transfer performance. At higher flow velocities, turbulent flow enhanced heat transfer, reflected by increased Nu, though at the expense of friction and pressure losses. Baseline comparisons without twisted tape showed significantly lower heat transfer performance. These findings highlight the critical role of optimized twisted tape design in balancing heat transfer efficiency and pressure loss for improved system performance.