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

  • Research Article - Mechanical Engineering
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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.

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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.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Birla Institute of Technology and Science, Pilani Campus, Vidya Vihar, Pilani, Rajasthan, 333 031, India

    Suvanjan Bhattacharyya

  2. Department of Mechanical Engineering, Jadavpur University, Kolkata, West Bengal, India

    Himadri Chattopadhyay

  3. Department of Mechanical Engineering, MCKV Institute of Engineering, Howrah, West Bengal, India

    Ranjib Biswas

  4. Department of Mechanical Engineering, Mechatronics and Industrial Design, Tshwane University of Technology, Private Bag X860, Pretoria, 0001, South Africa

    Daniel R. E. Ewim & Z. Huan

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  1. Suvanjan Bhattacharyya
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  2. Himadri Chattopadhyay
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  3. Ranjib Biswas
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  4. Daniel R. E. Ewim
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  5. Z. Huan
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Correspondence to Suvanjan Bhattacharyya.

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Bhattacharyya, S., Chattopadhyay, H., Biswas, R. et al. Influence of Inlet Turbulence Intensity on Transport Phenomenon of Modified Diamond Cylinder: A Numerical Study. Arab J Sci Eng 45, 1051–1058 (2020). https://doi.org/10.1007/s13369-019-04231-9

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  • DOI: https://doi.org/10.1007/s13369-019-04231-9

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