RANS ANALYSIS OF CONVECTIVE HEAT TRANSFER IN SWIRLING TURBULENT FLOWS INSIDE ANNULAR PIPES

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2023 Vol.28, Issue 4 Preview Page Next Page

RANS ANALYSIS OF CONVECTIVE HEAT TRANSFER IN SWIRLING TURBULENT FLOWS INSIDE ANNULAR PIPES 동심 환형 파이프 내부 난류 회전 유동에서 대류 열전달 현상의 RANS 분석: 이준희, 오창종, 강성원*
J. Lee, C. Oh and S. Kang*; 서강대학교 기계공학과

Dept. of Mechanical Engineering, Sogang University

31 December 2023. pp. 76-83

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Abstract

This study aims at investigating the heat transfer characteristics of turbulent swirling flows inside annular pipes. For turbulent swirling flows with the inlet Reynolds number of 8,000 and inlet swirl number of 1, unsteady RANS simulations using the Reynolds stress model are performed to examine the effects of the ratio of the inner and outer radii (i.e., gamma), Prandtl number (Pr), and different wall temperature conditions on the streamwise profiles of the swirl number and cross-sectional mean temperature. It was observed that the cross-sectional mean temperature cooling rate (CMTCR) decreases as Pr increases. The heat transfer rate through the inner wall is affected more strongly by gamma compared to the outer wall. The existence of an optimal gamma value that minimizes CMTCR is found to be more pronounced as Pr increases or for heat transfer through the outer wall. As a previous study found the existence of an optimal gamma value that minimizes the swirl decay rate (SDR), the present results imply that the Reynolds analogy between SDR and CMTCR holds better as Pr increases. It is deduced that the analogy is compromised as Pr decreases because the effect of the molecular diffusion becomes stronger.

Keywords

대류 열전달(Convective Heat Transfer)

환형 관(Annular Pipe)

전산유체역학(Computational Fluid Dynamics

CFD)

회전 유동(Swirling Flow)

레이놀즈 상사성(Reynolds Analogy)

References

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2009, Huang, Y. and Yang, V., "Dynamics and stability of lean-premixed swirl-stabilized combustion," Progress in Energy and Combustion Science, Vol.35, No.4, pp.293-364. 10.1016/j.pecs.2009.01.002
2017, Gomez-Ramirez, D., Kedukodi, S., Ekkad, S.V., Moon, H.-K.X., Kim, Y. and Srinivasan, R., "Investigation of isothermal convective heat transfer in an optical combustor with a low-emissions swirl fuel nozzle," Applied Thermal Engineering, Vol.114, pp.65-76. 10.1016/j.applthermaleng.2016.11.154
1990, Feikema, D., Chen, R. and Driscoll, J.F., "Enhancement of Flame Blowout Limits by the Use of Swirl," Combustion and Flame, Vol.80, No.2, pp.183-195. 10.1016/0010-2180(90)90126-C
2004, Jeong, Y.K., Jeon, C.H. and Chang, Y.J., "Effects of a swirling and recirculating flow on the combustion characteristics in non-premixed flat flames," KSME International Journal, Vol.18, No.3, p.499. 10.1007/BF02996115
2017, Liu, T., Bai, F., Zhao, Z., Lin, Y., Du, Q. and Peng, Z., "Large Eddy Simulation Analysis on Confined Swirling Flows in a Gas Turbine Swirl Burner," Energies, Vol.10, No.12, p.2081.10.3390/en10122081
1974, Syred, N. and Yang, V., "Combustion in swirling flows: A review," Combust. Flame, Vol.23, No.2, pp.143-201. 10.1016/0010-2180(74)90057-1
1967, Chigier, N.A. and Chervinsky, A., "Experimental Investigation of Swirling Vortex Motion in Jets," Journal of Applied Mechanics, Vol.34, No.2, p.443. 10.1115/1.3607703
2018, Choi, J., Jung, E., Kang, S. and Do, H., "Modeling Swirl Decay Rate of Turbulent Flows in Annular Swirl Injectors," AIAA Journal, Vol.56, No.12, pp.4910-4926. 10.2514/1.J057236
2021, Kim, H., Gong, Y.K., Choi, J., Do, H., Lee, G. and Kang, S., "Primary Parameters of Swirl Decay in Turbulent Swirling Flows Inside Annular Pipes," AIAA Journal, Vol.59, No.12, pp.5251-5265. 10.2514/1.J060156
2022, Gong, Y.K., Do, H., Lee, G. and Kang, S., "Modeling Swirl Evolution Inside Annular Nozzles Under Compressible Effect," AIAA Journal, Vol.60, No.10, pp.5907-5922. 10.2514/1.J061532
2022, Seibold, F., Ligrani, P. and Weigand, B., "Flow and heat transfer in swirl tubes - A review," International Journal of Heat and Mass Transfer, Vol.187, p.122455. 10.1016/j.ijheatmasstransfer.2021.122455
2017, Cavazzuti, M. and Corticelli, M.A., "Convective heat transfer of turbulent decaying swirled flows in concentric annular pipes," Applied Thermal Engineering, Vol.120, pp.517-529. 10.1016/j.applthermaleng.2017.04.015
Siemens Simcenter STAR-CCM+ User Guide V2302.
2011, Maddahian, R., Kebriaee, A., Farhanieh, B. and Firoozabadi, B., "Analytical investigation of boundary layer growth and swirl intensity decay rate in a pipe," Arch Appl Mech, Vol.81, No.4, pp.489-501. 10.1007/s00419-010-0424-9
1988, Algifri, A.H., Bhardwaj, R.K. and Rao, Y.V.N., "Eddy viscosity in decaying swirl flow in a pipe," Applied Scientific Research, Vol.45, No.4, pp.287-302. 10.1007/BF00457063
2011, Najafi, A.F., Mousavian, S.M. and Amini, K., "Numerical investigations on swirl intensity decay rate for turbulent swirling flow in a fixed pipe," International Journal of Mechanical Sciences, Vol.53, No.10, pp.801-811. 10.1016/j.ijmecsci.2011.06.011
2008, Jiang, L.-Y. and Campbell, I., "Reynolds analogy in combustor modeling," International Journal of Heat and Mass Transfer, Vol.51, No. 5-6, pp.1251-1263. 10.1016/j.ijheatmasstransfer.2007.12.006

Information

Publisher :Korean Society for Computational Fluids Engineering
Publisher(Ko) :한국전산유체공학회
Journal Title :Journal of Computational Fluids Engineering
Journal Title(Ko) :한국전산유체공학회지
Volume : 28
No :4
Pages :76-83

[1] 1996, Schlegel, A., Benz, P., Griffin, T., Weisenstein, W. and Bockhorn, H., "Catalytic stabilization of lean premixed combustion: Method for improving NOx emissions," Combustion and Flame, Vol.105, No.3, pp.332-340. 10.1016/0010-2180(95)00211-1

[2] 2005, Huang, Y. and Yang, V., "Effect of swirl on combustion dynamics in a lean-premixed swirl-stabilized combustor," Proceedings of the Combustion Institute, Vol.30, No.2, pp.1775-1782. 10.1016/j.proci.2004.08.237

[3] 2009, Huang, Y. and Yang, V., "Dynamics and stability of lean-premixed swirl-stabilized combustion," Progress in Energy and Combustion Science, Vol.35, No.4, pp.293-364. 10.1016/j.pecs.2009.01.002

[4] 2017, Gomez-Ramirez, D., Kedukodi, S., Ekkad, S.V., Moon, H.-K.X., Kim, Y. and Srinivasan, R., "Investigation of isothermal convective heat transfer in an optical combustor with a low-emissions swirl fuel nozzle," Applied Thermal Engineering, Vol.114, pp.65-76. 10.1016/j.applthermaleng.2016.11.154

[5] 1990, Feikema, D., Chen, R. and Driscoll, J.F., "Enhancement of Flame Blowout Limits by the Use of Swirl," Combustion and Flame, Vol.80, No.2, pp.183-195. 10.1016/0010-2180(90)90126-C

[6] 2004, Jeong, Y.K., Jeon, C.H. and Chang, Y.J., "Effects of a swirling and recirculating flow on the combustion characteristics in non-premixed flat flames," KSME International Journal, Vol.18, No.3, p.499. 10.1007/BF02996115

[7] 2017, Liu, T., Bai, F., Zhao, Z., Lin, Y., Du, Q. and Peng, Z., "Large Eddy Simulation Analysis on Confined Swirling Flows in a Gas Turbine Swirl Burner," Energies, Vol.10, No.12, p.2081.10.3390/en10122081

[8] 1974, Syred, N. and Yang, V., "Combustion in swirling flows: A review," Combust. Flame, Vol.23, No.2, pp.143-201. 10.1016/0010-2180(74)90057-1

[9] 1967, Chigier, N.A. and Chervinsky, A., "Experimental Investigation of Swirling Vortex Motion in Jets," Journal of Applied Mechanics, Vol.34, No.2, p.443. 10.1115/1.3607703

[10] 2018, Choi, J., Jung, E., Kang, S. and Do, H., "Modeling Swirl Decay Rate of Turbulent Flows in Annular Swirl Injectors," AIAA Journal, Vol.56, No.12, pp.4910-4926. 10.2514/1.J057236

[11] 2021, Kim, H., Gong, Y.K., Choi, J., Do, H., Lee, G. and Kang, S., "Primary Parameters of Swirl Decay in Turbulent Swirling Flows Inside Annular Pipes," AIAA Journal, Vol.59, No.12, pp.5251-5265. 10.2514/1.J060156

[12] 2022, Gong, Y.K., Do, H., Lee, G. and Kang, S., "Modeling Swirl Evolution Inside Annular Nozzles Under Compressible Effect," AIAA Journal, Vol.60, No.10, pp.5907-5922. 10.2514/1.J061532

[13] 2022, Seibold, F., Ligrani, P. and Weigand, B., "Flow and heat transfer in swirl tubes - A review," International Journal of Heat and Mass Transfer, Vol.187, p.122455. 10.1016/j.ijheatmasstransfer.2021.122455

[14] 2017, Cavazzuti, M. and Corticelli, M.A., "Convective heat transfer of turbulent decaying swirled flows in concentric annular pipes," Applied Thermal Engineering, Vol.120, pp.517-529. 10.1016/j.applthermaleng.2017.04.015

[15] Siemens Simcenter STAR-CCM+ User Guide V2302.

[16] 2011, Maddahian, R., Kebriaee, A., Farhanieh, B. and Firoozabadi, B., "Analytical investigation of boundary layer growth and swirl intensity decay rate in a pipe," Arch Appl Mech, Vol.81, No.4, pp.489-501. 10.1007/s00419-010-0424-9

[17] 1988, Algifri, A.H., Bhardwaj, R.K. and Rao, Y.V.N., "Eddy viscosity in decaying swirl flow in a pipe," Applied Scientific Research, Vol.45, No.4, pp.287-302. 10.1007/BF00457063

[18] 2011, Najafi, A.F., Mousavian, S.M. and Amini, K., "Numerical investigations on swirl intensity decay rate for turbulent swirling flow in a fixed pipe," International Journal of Mechanical Sciences, Vol.53, No.10, pp.801-811. 10.1016/j.ijmecsci.2011.06.011

[19] 2008, Jiang, L.-Y. and Campbell, I., "Reynolds analogy in combustor modeling," International Journal of Heat and Mass Transfer, Vol.51, No. 5-6, pp.1251-1263. 10.1016/j.ijheatmasstransfer.2007.12.006

Journal of Computational Fluids Engineering ISSN:1598-6071(Print) 3022-6252(Online) 한국전산유체공학회지

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