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Numerical Simulation of Flow and Heat Transfer of a Discontinuous Single Started Helically Ribbed Pipe

Author

Listed:
  • Simon Kügele

    (Institute of Energy and Drive Technology, Ulm University of Applied Sciences, Albert-Einstein-Allee 53, 89081 Ulm, Germany)

  • Gino Omar Mathlouthi

    (Institute of Design and CA-Technology, Ulm University of Applied Sciences, Prittwitzstraße 10, 89075 Ulm, Germany)

  • Peter Renze

    (Institute of Energy and Drive Technology, Ulm University of Applied Sciences, Albert-Einstein-Allee 53, 89081 Ulm, Germany)

  • Thomas Grützner

    (Laboratory of Thermal Process Engineering, Institute of Chemical Engineering, Ulm University, 89081 Ulm, Germany)

Abstract

In the present study, the turbulent flow field and the heat transfer in a single started helically ribbed pipe with a discontinuous rib are investigated. A large-eddy simulation (LES) technique is applied in a pipe section with cyclic boundary conditions. The aim of this study is to explain and further analyze the findings from the heat transfer measurements at such complex structures with the help of detailed flow simulations. The simulation results are validated with measurements at a Reynolds number of Re = 21,100 and a Prandtl number of Pr = 7 with water as fluid. The comparison clearly shows that the current method delivers accurate results concerning average flow field, turbulence quantities and local heat transfer. The results demonstrate that the applied method is capable of correctly simulating flows with heat transfer in complex three-dimensional structures. The overall heat transfer performance of the helically ribbed pipe with a discontinuous rib is compared to a smooth pipe and a continuous rib configuration. The impact of the interruption of the rib structure on pressure drop and heat transfer are analyzed in detail.

Suggested Citation

  • Simon Kügele & Gino Omar Mathlouthi & Peter Renze & Thomas Grützner, 2022. "Numerical Simulation of Flow and Heat Transfer of a Discontinuous Single Started Helically Ribbed Pipe," Energies, MDPI, vol. 15(19), pages 1-17, September.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:19:p:7096-:d:926645
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    References listed on IDEAS

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    1. Seyed Soheil Mousavi Ajarostaghi & Mohammad Zaboli & Hossein Javadi & Borja Badenes & Javier F. Urchueguia, 2022. "A Review of Recent Passive Heat Transfer Enhancement Methods," Energies, MDPI, vol. 15(3), pages 1-60, January.
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    Cited by:

    1. Artur S. Bartosik, 2023. "Numerical Heat Transfer and Fluid Flow: New Advances," Energies, MDPI, vol. 16(14), pages 1-7, July.

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