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Art Arda Yerleştirilmiş Eş Sıcaklıktaki İki Silindir Etrafında Akış ve Isı Geçişi

Yıl 2020, Cilt: 7 Sayı: 1, 342 - 353, 28.06.2020
https://doi.org/10.35193/bseufbd.711597

Öz

Bu çalışmada, ard ard yerleştirilen eş sıcaklıktaki iki silindir etrafındaki akış ve ısı geçişi geçici rejimde sayısal olarak incelenmiştir. İki boyutlu, geçici rejimde süreklilik, momentum ve enerji denklemleri Fluent yazılımı kullanılarak çözdürülmüştür. Çalışma akışkanı olarak hava (Pr=0.7) ve su (Pr=7) seçilmiştir. Reynolds sayısı 100, 150 ve 200 olarak alınmıştır. Ayrıca silindir merkezleri arasındaki uzaklık, L/D=1.5 ve 5 olarak seçilmiştir. Her durum için elde edilen sürükleme katsayısı, kaldırma katsayısı ve Nusselt sayısı gibi akış ve ısı transfer parametreleri, literatürdeki mevcut çalışmalarla karşılaştırılmıştır. L/D=1.5 olduğunda iki silindir arasında girdaplar oluşmazken, L/D=5 durumunda iki silindir arasında girdapların oluştuğu görülmektedir. Ayrıca Reynolds sayısının artması ile aşağı akış bölgesinde vorteksler ikinci silindire daha yakın bir mesafede oluşmuştur.

Kaynakça

  • Farrant, T., Tan, M. & Price, W.G., (2000). A cell boundary element method applied to laminar vortex shedding from circular cylinders. Journal of Fluids and Structures, 14(3), 375-402.
  • Meneghini, J.R., Saltara, F., Siqueira, C.L.R. & Ferrari, J.A., (2001). Numerical simulation of flow interference between two circular cylinders in tandem and side-by-side arrangements. Journal of Fluids and Structures, 15, 327–350.
  • Buyruk, E., (2002). Numerical study of heat transfer characteristics on tandem cylinders, inline and staggered tube bank in cross-flow of air. International Communications in Heat and Mass Transfer, 29(3), 355–366.
  • Kondo, N. & Matsukuma, D., (2005). Numerical simulation for flow around two circular cylinders in tandem. International Journal of Computational Fluid Dynamics, 19 (4), 277–288.
  • Carmo, B.S. & Meneghini, J.R., (2006). Numerical investigation of the flow around two circular cylinders in tandem. Journal of Fluids and Structures, 22(6-7), 979–988.
  • Huang, Z., Olson, J.A., Kerekes, R.J. & Green, S.I., (2006). Numerical simulation of the flow around rows of cylinders. Computers & Fluids, 35(5), 485-491.
  • Ding, H., Shu, C., Yeo, Y.O. & Xu, D., (2007). Numerical simulation of flows around two circular cylinders by mesh-free least square-based finite difference methods. International Journal for Numerical Methods in Fluids, 53(2), 305–332.
  • Mahir, N., Altaç, Z., (2008). Numerical investigation of convective heat transfer in unsteady flow past two cylinders in tandem arrangements. International Journal of Heat and Fluid Flow, 29, 1309-1318.
  • Chatterjee, D., & Mondal, B., (2012). Forced convection heat transfer from tandem square cylinders for various spacing ratios. Numerical Heat Transfer Part A: Applications, 61(5), 381–400.
  • Abbasi, W.S., Shams-Ul-Islam, Saha, S.C. et al. (2014). Effect of Reynolds numbers on flow past four square cylinders in an in-line square configuration for different gap spacings. Journal of Mechanical Science and Technology, 28, 539–552.
  • Ul Islam, S., Rahman, H. & Zhou, C.Y., (2016). Effect of gap spacings on flow past row of rectangular cylinders with aspect ratio 1.5. Ocean Engineering, 119, 1-15.
  • Zhang, W., Yang, H., Dou H.S. & Zhu, Z., (2017). Forced convection of flow past two tandem rectangular cylinders in a channel. Numerical Heat Transfer, Part A: Applications, 72(1), 89-106.
  • Shaaban, M. & Mohany A., (2018). Flow-induced vibration of three unevenly spaced in-line cylinders in cross-flow. Journal of Fluids and Structures, 76, 367-383.
  • Zhang, J., Chen, H., Zhou, B. & Wang, X., (2019). Flow around an array of four equispaced square cylinders. Applied Ocean Research, 89, 237-250.
  • Jue, T.C., Wu, H.W. & Huang, S.Y., (2001). Heat transfer predictions around three heated cylinders between two parallel plates. Numerical Heat Transfer, Part A: Applications, 40(7), 715–733.
  • Rahnama, M. & Hadi-Moghaddam, H., (2005). Numerical investigation of convective heat transfer in unsteady laminar flow over a square cylinder in a channel. Heat Transfer Engineering, 26(10), 21–29.
  • Chatterjee, D., and Mondal, B., (2013). Mixed convection heat transfer from tandem square cylinders for various gap to size ratios. Numerical Heat Transfer, Part A: Applications, 63(2), 101–119.
  • Barros, G.M., Lorenzini, G., Isoldi, L.A., Rocha, L.A.O. & dos Santos, E.D., (2017). Influence of mixed convection laminar flows on the geometrical evaluation of a triangular arrangement of circular cylinders. International Journal of Heat and Mass Transfer, 114, 1188-1200.
  • Sunakraneni, S., Puliyeri, V. & Prakash, AK., (2018). Fluid flow and heat transfer characteristics past two tandem elliptic cylinders: a numerical study. Journal of Enhanced Heat Transfer, 25(4-5), 421-441.
  • Slaouti, A., Stansby, P.K., (1992). Flow around two circular cylinders by the random vortex method. Journal of Fluids and Structures, 6, 641–670.

Numerical Investigation of Heat Transfer and Fluid Flow Around Two Tandem Cylinders

Yıl 2020, Cilt: 7 Sayı: 1, 342 - 353, 28.06.2020
https://doi.org/10.35193/bseufbd.711597

Öz

In this study, the unsteady flow and heat transfer from two tandem cylinders are studied numerically. For two-dimensional transient state continuity, Navier-Stokes and energy equations are solved using Fluent® software. The working fluids are considered as air (Pr=0.7) and water (Pr=7). The simulations are performed for Reynolds numbers of 100, 150 and 200. The distance between the cylinders is also taken as L/D=1.5 and L/D=5. The flow and heat transfer characteristics such as drag coefficient, lift coefficient and Nusselt number obtained for each case are compared with the studies in the literature. For L/D=5, the vortex shedding observed between the cylinders while no vortex is observed for L/D=1.5. With an increase in the Reynolds number, vortices are formed closer to the second cylinder in the downstream region.

Kaynakça

  • Farrant, T., Tan, M. & Price, W.G., (2000). A cell boundary element method applied to laminar vortex shedding from circular cylinders. Journal of Fluids and Structures, 14(3), 375-402.
  • Meneghini, J.R., Saltara, F., Siqueira, C.L.R. & Ferrari, J.A., (2001). Numerical simulation of flow interference between two circular cylinders in tandem and side-by-side arrangements. Journal of Fluids and Structures, 15, 327–350.
  • Buyruk, E., (2002). Numerical study of heat transfer characteristics on tandem cylinders, inline and staggered tube bank in cross-flow of air. International Communications in Heat and Mass Transfer, 29(3), 355–366.
  • Kondo, N. & Matsukuma, D., (2005). Numerical simulation for flow around two circular cylinders in tandem. International Journal of Computational Fluid Dynamics, 19 (4), 277–288.
  • Carmo, B.S. & Meneghini, J.R., (2006). Numerical investigation of the flow around two circular cylinders in tandem. Journal of Fluids and Structures, 22(6-7), 979–988.
  • Huang, Z., Olson, J.A., Kerekes, R.J. & Green, S.I., (2006). Numerical simulation of the flow around rows of cylinders. Computers & Fluids, 35(5), 485-491.
  • Ding, H., Shu, C., Yeo, Y.O. & Xu, D., (2007). Numerical simulation of flows around two circular cylinders by mesh-free least square-based finite difference methods. International Journal for Numerical Methods in Fluids, 53(2), 305–332.
  • Mahir, N., Altaç, Z., (2008). Numerical investigation of convective heat transfer in unsteady flow past two cylinders in tandem arrangements. International Journal of Heat and Fluid Flow, 29, 1309-1318.
  • Chatterjee, D., & Mondal, B., (2012). Forced convection heat transfer from tandem square cylinders for various spacing ratios. Numerical Heat Transfer Part A: Applications, 61(5), 381–400.
  • Abbasi, W.S., Shams-Ul-Islam, Saha, S.C. et al. (2014). Effect of Reynolds numbers on flow past four square cylinders in an in-line square configuration for different gap spacings. Journal of Mechanical Science and Technology, 28, 539–552.
  • Ul Islam, S., Rahman, H. & Zhou, C.Y., (2016). Effect of gap spacings on flow past row of rectangular cylinders with aspect ratio 1.5. Ocean Engineering, 119, 1-15.
  • Zhang, W., Yang, H., Dou H.S. & Zhu, Z., (2017). Forced convection of flow past two tandem rectangular cylinders in a channel. Numerical Heat Transfer, Part A: Applications, 72(1), 89-106.
  • Shaaban, M. & Mohany A., (2018). Flow-induced vibration of three unevenly spaced in-line cylinders in cross-flow. Journal of Fluids and Structures, 76, 367-383.
  • Zhang, J., Chen, H., Zhou, B. & Wang, X., (2019). Flow around an array of four equispaced square cylinders. Applied Ocean Research, 89, 237-250.
  • Jue, T.C., Wu, H.W. & Huang, S.Y., (2001). Heat transfer predictions around three heated cylinders between two parallel plates. Numerical Heat Transfer, Part A: Applications, 40(7), 715–733.
  • Rahnama, M. & Hadi-Moghaddam, H., (2005). Numerical investigation of convective heat transfer in unsteady laminar flow over a square cylinder in a channel. Heat Transfer Engineering, 26(10), 21–29.
  • Chatterjee, D., and Mondal, B., (2013). Mixed convection heat transfer from tandem square cylinders for various gap to size ratios. Numerical Heat Transfer, Part A: Applications, 63(2), 101–119.
  • Barros, G.M., Lorenzini, G., Isoldi, L.A., Rocha, L.A.O. & dos Santos, E.D., (2017). Influence of mixed convection laminar flows on the geometrical evaluation of a triangular arrangement of circular cylinders. International Journal of Heat and Mass Transfer, 114, 1188-1200.
  • Sunakraneni, S., Puliyeri, V. & Prakash, AK., (2018). Fluid flow and heat transfer characteristics past two tandem elliptic cylinders: a numerical study. Journal of Enhanced Heat Transfer, 25(4-5), 421-441.
  • Slaouti, A., Stansby, P.K., (1992). Flow around two circular cylinders by the random vortex method. Journal of Fluids and Structures, 6, 641–670.
Toplam 20 adet kaynakça vardır.

Ayrıntılar

Birincil Dil Türkçe
Konular Mühendislik
Bölüm Makaleler
Yazarlar

Zerrin Sert 0000-0001-6934-5443

Çisil Timuralp 0000-0002-2894-3575

Yayımlanma Tarihi 28 Haziran 2020
Gönderilme Tarihi 31 Mart 2020
Kabul Tarihi 8 Haziran 2020
Yayımlandığı Sayı Yıl 2020 Cilt: 7 Sayı: 1

Kaynak Göster

APA Sert, Z., & Timuralp, Ç. (2020). Art Arda Yerleştirilmiş Eş Sıcaklıktaki İki Silindir Etrafında Akış ve Isı Geçişi. Bilecik Şeyh Edebali Üniversitesi Fen Bilimleri Dergisi, 7(1), 342-353. https://doi.org/10.35193/bseufbd.711597