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

Yıl 2022, , 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

• 1. Akbarzadeh, M., Maghrebi, M.J., 2018. Combined Effects of Corrugated Walls and Porous Inserts on Performance Improvement in a Heat Exchanger Channel. International Journal of Thermal Science, 127, 266–276.
• 2. Akbarzadeh, M., Rashidi, S., Karimi, N., Omar, N., 2019. First and Second Laws of Thermodynamics Analysis of Nanofluid Flow Inside a Heat Exchanger Duct with Wavy Walls and a Porous Insert. Journal of Thermal Analysis and Calorimetry, 135, 177-194.
• 3. Ahmed, M.A., Shuaib, N.H., Yusoff, M.Z. Al- Falahi, A.H., 2011. Numerical Investigations of Flow and Heat Transfer Enhancement in a Corrugated Channel Using Nanofluid. International Communications in Heat and Mass Transfer, 38, 1368–1375.
• 4. Ahmed, M.A., Shuaib, N.H., Yusoff, M.Z., 2012. Numerical Investigations on the Heat Transfer Enhancement in a Wavy Channel Using Nanofluid. International Journal of Heat and Mass Transfer, 55, 5891–5898.
• 5. Ozbolat, V., Sahin, B., 2013. Numerical Investigations of Heat Transfer Enhancement of Water-based Al2O3 Nanofluids in a Sinusoidal-wall Channel. Heat Transfer and Thermal Engineering (American Society of Mechanical Engineers) 8A, 1–6.
• 6. Tokgoz, N., Ozbolat, V., Sahin, B., 2016. Investıgatıon of Heat Transfer Enhancement by Using Al2O3/Water Nanofluıd in Rectangular Corrugated Channel. Kahramanmaras Sutcu Imam University Journal of Engineering Sciences, 19, 42–51.
• 7. Ajeel, R.K., Salim, W.S.-I.W., Hasnan, K., 2019. Thermal Performance Comparison of Various Corrugated Channels Using Nanofluid: Numerical Study. Alexandria Engineering Journal, 58, 75–87.
• 8. Jafari, M., Farhadi, M., Sedighi, K., 2015. Convection Heat Transfer of SWCNTNanofluid in a Corrugated Channel Under Pulsating Velocity Profile. International Communications in Heat and Mass Transfer, 67, 137–146.
• 9. Kurtulmuş, N., Sahin, B., 2020. Experimental Investigation of Pulsating Flow Structures and Heat Transfer Characteristics in Sinusoidal Channels, International Journal of Mechanical Sciences, 167, 105268.
• 10.Blythman, R., Persoons, T., Jeffers, N., Murray, D.B., 2019. Heat Transfer of Laminar Pulsating Flow in a Rectangular Channel. International Journal of Heat and Mass Transfer, 128, 279–289.
• 11.Jafari, M., Farhadi, M., Sedighi, K., 2013. Pulsating Flow Effects on Convection Heat Transfer in a Corrugated Channel: A LBM approach. International Communications in Heat and Mass Transfer, 45, 146–154.
• 12.Zhang, F., Bian, Y., Liu, Y., Pan, J., Yang, Y., Arima, H., 2019. Experimental and Numerical Analysis of Heat Transfer Enhancement and Flow Characteristics in Grooved Channel for Pulsatile Flow. International Journal of Heat and Mass Transfer, 141, 1168–1180.
• 13.Ozbolat, V., Tokgoz, N., Sahin, B., 2013 Flow Characteristics and Heat Transfer Enhancement in 2D Corrugated Channels International Journal of Mechanical, Aerospace, Industrial, Mechatronic and Manufacturing Engineering, 7, 539–543.
• 14.Kurtulmuş, N., Zontul, H., Sahin, B., 2020. Heat Transfer and Flow Characteristics in a Sinusoidally Curved Converging-diverging Channel. International Journal of Thermal Sciences, 148, 106163.
• 15.Rush, T.A., Newell, T.A., Jacobi, A.M., 1999 An Experimental Study of Flow and Heat Transfer in Sinusoidal Wavy Passages. International Journal of Heat and Mass Transfer, 42 1541–1553.
• 16.Rashidi, S., Akbarzadeh, M., Masoodi, R., Languri, E.M., 2017. Thermal-hydraulic and Entropy Generation Analysis for Turbulent Flow Inside a Corrugated Channel. International Journal of Heat and Mass Transfer, 109, 812–823.
• 17.Wang, G., Vanka, S., P., 1995. Convective Heat Transfer in Periodic Wavy Passages. International Journal of Heat and Mass Transfer, 38, 3219–3230.
• 18.Tokgoz, N., Sahin, B., 2019. Experimental Studies of Flow Characteristics in Corrugated Ducts. International Communications in Heat and Mass Transfer, 104, 41–50.
• 19.Tokgoz, N., Tunay, T., Sahin, B., 2018. Effect of Corrugated Channel Phase Shifts on Flow Structures and Heat Transfer Rate. Experimental Thermal and Fluid Science, 99, 374–391.
• 20.Tokgoz, N., Aksoy, M.M., Sahin, B., 2017. Investigation of Flow Characteristics and Heat Transfer Enhancement of Corrugated Duct Geometries. Applied Thermal Engineering, 118, 518–530.
• 21.Paisarn, N., 2010. Study on the Heat-transfer Characteristics and Pressure Drop in Channelsmwith Arc-shaped Wavy Plates Journal of Engineering Physics and Thermophysics, 83, 1061–1069.
• 22.Bahaidarah, H.M.S., 2007. A Numerical Study of Fluid Flow and Heat Transfer Characteristics in Channels with Staggered Wavy Walls. Numerical Heat Transfer; Part A: Applications, 51, 877–898.
• 23.Bahaidarah, H.M., 2009. Fluid Flow and Heat Transfer Characteristics in Sharp Edge Wavy Channels with Horizontal Pitch. Emirates Journal for Engineering Research, 14, 53–63.
• 24.Ahmed, M.A., Yusoff, M.Z., Shuaib, N.H., 2013. Effects of Geometrical Parameters on the Flow and Heat Transfer Characteristics in Trapezoidal-corrugated Channel Using Nanofluid. International Communications in Heat and Mass Transfer, 42, 69–74.
• 25.Oviedo-Tolentino, F., Romero-Méndez, R., Hernández-Guerrero, A., Girón-Palomares, B., 2008. Experimental Study of Fluid Flow in the Entrance of a Sinusoidal Channel International Journal of Heat and Fluid Flow, 29, 1233–1239.
• 26.Oviedo-Tolentino, F., Romero-Méndez, R., Hernández-Guerrero, A., Girón-Palomares, B., 2009. Use of Diverging or Converging Arrangement of Plates for the Control of Chaotic Mixing in Symmetric Sinusoidal Plate Channels, Experimental Thermal and Fluid Science, 33, 208–214.
• 27.Tatsuo, N., Shinichiro, M., Shingho, A., Yuji K, 1990. Flow Observations and Mass Transfer Characteristics in Symmetrical Wavy-walled Channels at Moderate Reynolds Numbers for Steady Flow. International Journal of Heat and Mass Transfer, 33, 835–845.
• 28.Nishimura, T., Ohori, Y., Kawamura, Y., 1984. Flow Characteristics in a Channel with Symmetric Wavy Wall for Steady Flow. Journal of Chemical Engineerıng of Japan, 17, 466–471.
• 29.Gradeck, M., Hoareau, B., Lebouché, M., 2005. Local Analysis of Heat Transfer Inside Corrugated Channel. International Journal of Heat and Mass Transfer, 48, 1909–1915.
• 30.Goldstein, L., Sparrow, E., M., 1977. Heat/Mass Transfer Characteristics for Flow in a Corrugated Wall Channel. Journal of Heat Transfer, 99, 187–195.
• 31.O’Brien, J.E., Sparrow, E.M., 1982. Corrugated-duct Heat Transfer, Pressure Drop and Flow Visualization, Journal of Heat Transfer, 104, 410–416.
• 32.Oyakawa, K., Shinzato, T., Mabuchi, I., 1989. The Effects of the Channel Width on Heattransfer Augmentation in a Sinusoidal Wave Channel. JSME International Journal, 32, 403-410.
• 33.Ramgadia, A.G., Saha, A.K., 2012. Fully Developed Flow and Heat Transfer Characteristics in a Wavy Passage: Effect of Amplitude of Waviness and Reynolds Number International Journal of Heat and Mass Transfer, 55, 2494–2509.
• 34.Hossain, M.Z., Islam, A.K.M.S., 2004. Fully Developed Flow Structures and Heat Transfer in Sine-shaped Wavy Channels. International Communications in Heat and Mass Transfer, 31, 887–896.
• 35.Ozbolat, V., 2015. Flow Characteristics and Heat Transfer Enhancement of Sinusoidal Corrugated Channels. PhD Thesis, Cukurova University Institute of Natural and Applied Sciences, 143.
• 36.Launder, B.E., Spalding, D.B., 1974. The Numerical Computation of Turbulent Flows. Computer Methods in Applied Mechanics and Engineering, 3, 269–289.