Advertisement

Influence of Inlet Turbulence Intensity on Transport Phenomenon of Modified Diamond Cylinder: A Numerical Study

  • Suvanjan BhattacharyyaEmail author
  • Himadri Chattopadhyay
  • Ranjib Biswas
  • Daniel R. E. Ewim
  • Z. Huan
Research Article - Mechanical Engineering
  • 8 Downloads

Abstract

Flows around bluff cylinder have received the attention of many researchers over the years. Therefore, the purpose of this paper was to study the effect of turbulence intensity on the transport phenomena over modified diamond cylinders which is investigated in this work. The bluff cylinders considered are of diamond shape and extruded diamond shape. The hydraulic diameter of bluff bodies is taken as the non-dimensional length scale. The simulation is done to cover cross-flow covering the laminar and turbulent regime with the Reynolds number reaching up to 10,000, while the inlet turbulent intensity is varied between 5 and 20%. The influence of turbulent intensity on enhancing heat transfer from the body has been emphasized in this work. The transition SST models along with governing equations (continuity, momentum, and energy equations) are solved numerically with ANSYS Fluent 19.2. The simulation results are validated with established correlations, and excellent agreement is found. This work demonstrates that the transition SST model can effortlessly bridge all flow regimes for predicting the heat transfer. The study computes the influence of inlet turbulence intensity on augmenting heat transfer from the bluff cylinders. The pressure and drag coefficients are found to be unaffected by the inlet turbulent intensity.

Keywords

Turbulent flow Heat transfer Diamond cylinder Forced convection Bluff body Swirl flow 

Notes

Acknowledgements

The authors would like to gratefully acknowledge Mr. Arnab Banerjee, undergraduate mechanical engineering student of MCKV Institute of Engineering, and Mr. Sudhir Murmu, Research Scholar of Jadavpur University, for their support in this research. The authors gratefully acknowledges University of Pretoria for computational support.

References

  1. 1.
    You, J.Y.; Kwon, O.J.: Numerical assessment of turbulent models at a critical regime on unstructured meshes. J. Mech. Sci. Technol. 26, 1363–1369 (2012)CrossRefGoogle Scholar
  2. 2.
    Saha, A.K.: Effect of transitions on flow past a square cylinder at low Reynolds number. J. Eng. Mech. 135, 839–851 (2009)CrossRefGoogle Scholar
  3. 3.
    Chen, O.M.; Utnes, T.; Holmedel, L.E.; Pettersen, D.M.B.: Numerical simulation of flow around a smooth circular cylinder at very high Reynolds numbers. Mar. Struct. 22, 142–153 (2009)CrossRefGoogle Scholar
  4. 4.
    Bearman, P.W.; Obasaju, E.D.: An experimental study of pressure fluctuations on fixed and oscillating square-section cylinders. J. Fluid Mech. 34, 625–639 (1982)Google Scholar
  5. 5.
    Venugopal, A.; Agrawal, A.; Prabhu, S.V.: Span wise correlations in the wake of a circular cylinder and a trapezoid placed inside a circular pipe. J. Fluids Struct. 54, 536–547 (2015)CrossRefGoogle Scholar
  6. 6.
    You, J.Y.; Kwon, O.J.: Numerical assessment of turbulent models at a critical regime on unstructured meshes. J. Mech. Sci. Technol. 26, 1363–1369 (2012)CrossRefGoogle Scholar
  7. 7.
    Roshko, A.: On the wake and drag of bluff bodies. J. Aeronaut. Sci. 22, 124–132 (1955)CrossRefGoogle Scholar
  8. 8.
    Zeitoun, O.; Ali, M.; Nuhait, A.: Convective heat transfer around a triangular cylinder in an air cross flow. Int. J. Therm. Sci. 50, 1685–1697 (2011)CrossRefGoogle Scholar
  9. 9.
    Chatterjee, D.: Mixed convection heat transfer from tandem square cylinders in a vertical channel at low Reynolds numbers. Numer. Heat Transf. Part A Appl. 58, 740–755 (2010)CrossRefGoogle Scholar
  10. 10.
    Dhiman, A.; Ghosh, R.: Computer simulation of momentum and heat transfer across an expanded trapezoidal bluff body. Int. J. Heat Mass Transf. 59, 338–352 (2013)CrossRefGoogle Scholar
  11. 11.
    Selvakumar, R.D.; Dhinakaran, S.: Heat transfer and particle migration in nanofluid flow around a circular bluff body using a two-way coupled Eulerian-Lagrangian approach. Int. J. Heat Mass Transf. 115, 282–293 (2017)CrossRefGoogle Scholar
  12. 12.
    Saha, A.K.; Muralidhar, K.; Biswas, G.: Transition and chaos in two-dimensional flow past a square cylinder. J. Eng. Mech. 126, 523–532 (2000)CrossRefGoogle Scholar
  13. 13.
    Kondjoyan, A.; Daudin, J.D.: Effects of free stream turbulence intensity on heat and mass transfers at the surface of a circular cylinder and an elliptical cylinder, axis ratio 4. Int. J. Heat Mass Transf. 10(38), 1735–1749 (1995)CrossRefGoogle Scholar
  14. 14.
    Sanitjai, S.; Goldstein, R.J.: Forced convection heat transfer from a circular cylinder in cross flow to air and liquids. Int. J. Heat Mass Transf. 12, 4795–4805 (2004)CrossRefGoogle Scholar
  15. 15.
    Chaterjee, D.; Mondal, B.: Effect of thermal buoyancy on the two-dimensional upward flow and heat transfer around a square cylinder. Heat Transf. Eng. 33, 1063–1074 (2012)CrossRefGoogle Scholar
  16. 16.
    Chattopadhyay, H.: Augmentation of heat transfer in a channel using a triangular prism. Int. J. Therm. Sci. 46, 501–505 (2007)CrossRefGoogle Scholar
  17. 17.
    Benim, A.C.; Chattopadhyay, H.; Navahandi, A.: Computational analysis of turbulent forced convection in a channel with a triangular prism. Int. J. Therm. Sci. 50, 1973–1983 (2011)CrossRefGoogle Scholar
  18. 18.
    Benim, A.C.; Pasqualotto, E.; Suh, S.H.: Modelling turbulent flow past a circular cylinder by RANS, URANS, LES and DES. Prog. Comput. Dyn. 8, 299–307 (2008)CrossRefGoogle Scholar
  19. 19.
    Ding, H.; Shu, C.; Yeo, K.S.; Xu, D.: Simulation of incompressible viscous flows past a circular cylinder by hybrid FD scheme and meshless least square-based finite difference method. Comput. Methods Appl. Mech. Eng. 193, 727–744 (2004)CrossRefGoogle Scholar
  20. 20.
    Shu, C.; Qu, K.; Niu, X.D.; Chew, Y.T.: Numerical simulation of flow past a rotational circular cylinder by Taylor-series-expansion and least squares-based lattice Boltzmann method. Int. J. Mod. Phys. C 16, 1753–1770 (2005)CrossRefGoogle Scholar
  21. 21.
    Bhattacharyya, S.; Chattopadhyay, H.; Benim, A.C.: Simulation of heat transfer enhancement in duct flow with twisted tape insert. Prog. Comput. Fluid Dyn. Int. J. 17, 193–197 (2017)CrossRefGoogle Scholar
  22. 22.
    Abraham, A.P.; Sparrow, E.M.; Tong, J.C.K.: Heat transfer in all pipe flow regimes: laminar, transitional/intermittent, and turbulent. Int. J. Heat Mass Transf. 52, 557–563 (2009)CrossRefGoogle Scholar
  23. 23.
    Bhattacharyya, S.; Chattopadhyay, H.; Benim, A.C.: Computational investigation of heat transfer enhancement by alternating inclined ribs in tubular heat exchanger. Prog. Comput. Fluid Dyn. Int. J. 17(6), 390–396 (2017)MathSciNetCrossRefGoogle Scholar
  24. 24.
    Zukauskas, A.: Heat transfer from tubes in cross flow. In: Harnett, J.P., Irvine Jr., T.F. (eds.) Advances in Heat Transfer, p. 8. Academic Press, New York (1978)Google Scholar
  25. 25.
    Bhattacharyya, S.; Dey, K.; Hore, R.; Banerjee, A.; Paul, A.R.: Computational study on thermal energy around diamond shaped cylinder at varying inlet turbulent intensity. Energy Procedia 160, 285–292 (2019)CrossRefGoogle Scholar
  26. 26.
    Murmu S.C.; Biswas, C.; Chattopadhyay, H.; Sarkar, A.: Numerical simulation of flow and heat transfer around circular cylinder. In: Proceedings of the 23rd National Heat and Mass Transfer Conference and 1st International ISHMT-ASTFE Heat and Mass Transfer Conference IHMTC 2015, 17–20 December, Thiruvananthapuram, India (2015)Google Scholar

Copyright information

© King Fahd University of Petroleum & Minerals 2019

Authors and Affiliations

  • Suvanjan Bhattacharyya
    • 1
    Email author
  • Himadri Chattopadhyay
    • 2
  • Ranjib Biswas
    • 3
  • Daniel R. E. Ewim
    • 4
  • Z. Huan
    • 4
  1. 1.Department of Mechanical EngineeringBirla Institute of Technology and Science, Pilani CampusPilaniIndia
  2. 2.Department of Mechanical EngineeringJadavpur UniversityKolkataIndia
  3. 3.Department of Mechanical EngineeringMCKV Institute of EngineeringHowrahIndia
  4. 4.Department of Mechanical Engineering, Mechatronics and Industrial DesignTshwane University of TechnologyPretoriaSouth Africa

Personalised recommendations