Sinüs Şeklinde Oluklu Kanalların Farklı Konfigürasyonlardaki Akış Karakteristiği ve Isı Transfer İyileştirmesi

Yıl 2022, Cilt: 37 Sayı: 1, 93 - 107, 29.03.2022

Veli Özbolat Beşir Şahin

https://doi.org/10.21605/cukurovaumfd.1094986

Öz

Bu çalışma sinüs şeklindeki çeşitli kanallardaki akış karekteristiğini ve ısı transfer iyileştirmesini incelemiştir. Kanal yüksekliği ve faz açısının akış yapısı ve ısıl performansa etkileri Reynolds sayısı 2500≤Re≤7500 aralığında sayısal olarak incelenmiştir. Bu çalışmadaki geometrik konfigurasyonlar üç kanal boyu (Hmin/Hmaks=0,36, 0,54, 0,72) ve üç faz açısını (φ=0°, 90°, 180°) kapsamaktadır. Hız dağılımı, türbülans şiddeti, yerel ve ortalama Nusselt sayıları ve sürtünme faktörü çeşitli konfigürasyonlar için hesaplanmıştır. Son olarak, optimal kanal konfigürasyonu ve çalışma koşulunu belirlemek için ısıl performans faktörü (TPF) de hesaplanmıştır.

Anahtar Kelimeler

Oluklu kanal, Isı transfer iyileşmesi, Faz açısı, Isıl perfomans faktörü

Flow Characteristics and Heat Transfer Enhancement of Sinusoidal Corrugated Channels with Different Configurations

Öz

This study investigated flow characteristics and heat transfer enhancement in various sinusoidal corrugated channels. The channel height and the phase shift effects on the flow structures and thermal performances were examined numerically for Reynolds numbers in the range of 2500≤Re≤7500. The geometrical configurations of this study cover three different channel heights (Hmin/Hmax=0.36, 0.54, 0.72) and three phase shift angles (φ=0°, 90°, 180°). Velocity distribution, turbulence intensity, local and averaged Nusselt numbers, and friction factor were calculated for various configurations. Finally, thermal performance factors (TPF) were also calculated to determine the optimum channel configuration and
operating condition.

Anahtar Kelimeler

Corrugated channel, Heat transfer enhancement, Phase shift, Thermal performance factor

Kaynakça

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