Abstract
In the present study, numerical analysis of heat transfer from heated cylinder, located in
rectangular channel normal to the flow direction is studied. Finite volume based ANSYS-FLUENT 14 code
is used in the solution of governing equations. Three different turbulence models as Std. k-ε, RNG k-ε and
Realizable k-ε are used in computations for four different Reynolds numbers, Re= 4000, 8000, 16000, and
32000. It is found that numerical results obtained with Std. and RNG k-ε turbulence models are in good
agreement with experimental data for maximum value of local Nusselt number on the cylinder. As expected
that local Nusselt numbers increase with increasing Reynolds number for almost all points on cylinder.
References
- Ayoub, A., Karamcheti, K. (1982) “An Experiment on the Flow Past a Finite Circular Cylinder at High Subcritical and Supercritical Reynolds Numbers”, Journal of Fluid Mechanics, 118, s1–26.
- ANSYS (2012) ANSYS-FLUENT 14 User’ Guide.
- Buyruk, E., Johnson, M.W., Owen, I. (1998) "Numerical and Experimental Study of Flow and Heat Transfer around a Tube in Cross-flow at Low Reynolds Number", Int. J. Heat & Fluid Flow, 19, s223-232.
- Buyruk, E., Can, A., Fertelli, A. (2001) "Finite Element Solution of the Performance of a Heated Tube Influenced by Adjacent Heated Tubes" 12. International Conference on Thermal Eng. and Thermogrametry, Budapest.
- Çelik, S., Karakuş, C., Akıllı, H., Şahin, B., (2011) “Sonlu-Silindir Üzerindeki Akış Yapısının Parçacık Görüntülemeli Hız Ölçüm Tekniği (PIV) ile İncelenmesi, Tesisat Mühendisliği Dergisi, 125, s33-51
- Ghisalberti, L., Kondjoyan, A. (2002) “Complete map out of the heat transfer coefficient at the surface of two circular cylinders H/D=3.0 and 0.3 subjected to a cross-flow of air”, International Journal of Heat and Mass Transfer, 45, s2597–2609.
- Giordano, R., Ianiro, A., Astarita, T., Carlomagno, G. M. (2011) “Flow Field and Heat Transfer on the Base Surface of a Finite Circular Cylinder In Crossflow”, Applied Thermal Engineering, 49, s79-88.
- Güney, H.A. (2010) “Adyabatik Mikrokanallarda Akışın Fluent ile Modellenmesi”, Yüksek Lisans Tezi, Sakarya Üniversitesi. he Production of Turbulence near a Smooth Wall in a Turbulent Boundary Layer”, Journal of Fluid Mechanics, 50, s133–160.
- İşman, M.K. (2011) “Tekli ve Çoklu Çarpan Hava Jetlerinde Taşınımla Isı ve Kütle Transferinin Deneysel ve Teorik olarak İncelenmesi”, Doktora Tezi, Uludağ Üniversitesi.
- Kim, H.T., Kline, S.J., Reynolds, W.C. (1971) “The Production of Turbulence near a Smooth Wall in a Turbulent Boundary Layer”, Journal of Fluid Mechanics, 50, s133–160.
- Kline S.J., Robinson S. K. (1990) “Quasi-coherent Structures in the Turbulent Boundarylayer”, 1. Status Report on a Community-wide Summary of the Data, Proceedings of the International Centre for Heat and Mass Transfer, 28, s200-217.
- Launder, B. E., Spalding, D.B. (1972) “Lectures in Mathematical Models of Turbulence”, Academic Press, London.
- Pulat, E., Isman, M. K., Etemoglu, A. B., Can, M. (2011) “Effect of Turbulence Models and Near-Wall Modeling Approaches on Numerical Results in Impingement Heat Transfer”, Numerical Heat Transfer, Part B, 60, s486–519. Uludağ Üniversitesi Mühendislik Fakültesi Dergisi, Cilt 20, Sayı 1, 2015
- Sanitjai, S., Goldstein, R.J. (2004) “Forced convection heat transfer from a circular cylinder in crossflow to air and liquids” International Journal of Heat and Mass Transfer, 47, s4795–4805.
- Zdrovistch, E., Fletcher, A.C, Behnio, M. (1995) "Numerical Laminar and Turbulent Fluid Flow and Heat Transfer Predictions in Tube Banks", Int. J. Num. Meth. Heat and Fluid Flow,5, s717-733.
Abstract
Bu çalışmada, dikdörtgen kesitli bir kanalın içerisinde, akışa dik olarak yerleştirilmiş ve ısıtılmış
silindir üzerinden olan ısı transferi sayısal olarak incelenmiştir. Akışı idare eden Navier-Stokes
denklemlerinin çözümünde Sonlu Hacim Metodunu (SHM) kullanan ANSYS-FLUENT 14 paket programı
kullanılmıştır. Çalışmada, üç farklı türbülans modeli (Std. k-ε, RNG k-ε ve Realizable k-ε) ile dört farklı
giriş Reynolds sayısı (Re= 4000, 8000, 16000 ve 32000) için hesaplamalar yapılmıştır. Sonuç olarak, Std.
ve RNG k-ε türbülans modelleri ile elde edilen sayısal sonuçların deneysel değerlerle iyi uyum gösterdiği
tespit edilmiştir. Ayrıca beklenildiği üzere artan Reynolds sayısı ile silindir üzerindeki hemen hemen tüm
noktalarda Nusselt sayısı arttırmıştır.
References
- Ayoub, A., Karamcheti, K. (1982) “An Experiment on the Flow Past a Finite Circular Cylinder at High Subcritical and Supercritical Reynolds Numbers”, Journal of Fluid Mechanics, 118, s1–26.
- ANSYS (2012) ANSYS-FLUENT 14 User’ Guide.
- Buyruk, E., Johnson, M.W., Owen, I. (1998) "Numerical and Experimental Study of Flow and Heat Transfer around a Tube in Cross-flow at Low Reynolds Number", Int. J. Heat & Fluid Flow, 19, s223-232.
- Buyruk, E., Can, A., Fertelli, A. (2001) "Finite Element Solution of the Performance of a Heated Tube Influenced by Adjacent Heated Tubes" 12. International Conference on Thermal Eng. and Thermogrametry, Budapest.
- Çelik, S., Karakuş, C., Akıllı, H., Şahin, B., (2011) “Sonlu-Silindir Üzerindeki Akış Yapısının Parçacık Görüntülemeli Hız Ölçüm Tekniği (PIV) ile İncelenmesi, Tesisat Mühendisliği Dergisi, 125, s33-51
- Ghisalberti, L., Kondjoyan, A. (2002) “Complete map out of the heat transfer coefficient at the surface of two circular cylinders H/D=3.0 and 0.3 subjected to a cross-flow of air”, International Journal of Heat and Mass Transfer, 45, s2597–2609.
- Giordano, R., Ianiro, A., Astarita, T., Carlomagno, G. M. (2011) “Flow Field and Heat Transfer on the Base Surface of a Finite Circular Cylinder In Crossflow”, Applied Thermal Engineering, 49, s79-88.
- Güney, H.A. (2010) “Adyabatik Mikrokanallarda Akışın Fluent ile Modellenmesi”, Yüksek Lisans Tezi, Sakarya Üniversitesi. he Production of Turbulence near a Smooth Wall in a Turbulent Boundary Layer”, Journal of Fluid Mechanics, 50, s133–160.
- İşman, M.K. (2011) “Tekli ve Çoklu Çarpan Hava Jetlerinde Taşınımla Isı ve Kütle Transferinin Deneysel ve Teorik olarak İncelenmesi”, Doktora Tezi, Uludağ Üniversitesi.
- Kim, H.T., Kline, S.J., Reynolds, W.C. (1971) “The Production of Turbulence near a Smooth Wall in a Turbulent Boundary Layer”, Journal of Fluid Mechanics, 50, s133–160.
- Kline S.J., Robinson S. K. (1990) “Quasi-coherent Structures in the Turbulent Boundarylayer”, 1. Status Report on a Community-wide Summary of the Data, Proceedings of the International Centre for Heat and Mass Transfer, 28, s200-217.
- Launder, B. E., Spalding, D.B. (1972) “Lectures in Mathematical Models of Turbulence”, Academic Press, London.
- Pulat, E., Isman, M. K., Etemoglu, A. B., Can, M. (2011) “Effect of Turbulence Models and Near-Wall Modeling Approaches on Numerical Results in Impingement Heat Transfer”, Numerical Heat Transfer, Part B, 60, s486–519. Uludağ Üniversitesi Mühendislik Fakültesi Dergisi, Cilt 20, Sayı 1, 2015
- Sanitjai, S., Goldstein, R.J. (2004) “Forced convection heat transfer from a circular cylinder in crossflow to air and liquids” International Journal of Heat and Mass Transfer, 47, s4795–4805.
- Zdrovistch, E., Fletcher, A.C, Behnio, M. (1995) "Numerical Laminar and Turbulent Fluid Flow and Heat Transfer Predictions in Tube Banks", Int. J. Num. Meth. Heat and Fluid Flow,5, s717-733.
Details
| Primary Language | Turkish |
|---|---|
| Authors | |
| Submission Date | April 28, 2015 |
| Publication Date | March 13, 2015 |
| Published in Issue | Year 2015 Volume: 20 Issue: 1 |
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