MATEC Web Conf.
Volume 240, 2018XI International Conference on Computational Heat, Mass and Momentum Transfer (ICCHMT 2018)
|Number of page(s)||6|
|Section||Heat, Mass and Momentum Transfer|
|Published online||27 November 2018|
Heat transfer and flow field in a circular twisted channel
Deparement of Mechanical and Aeronautical Engineering, University of Pretoria, South Africa
2 Mechanical Engineering Department, Jadavpur University, Kolkata, West Bengal, India
2 Mechanical Engineering Department, MCKV Institute of Engineering, Liluah, Howrah, West Bengal, India
4 Center of Flow Simulation (CFS), Dept. Mechanical and Process Engineering, Düsseldorf University of Applied Sciences, Germany
* Corresponding author: firstname.lastname@example.org
In the present paper, along with experimental study, computational fluid dynamics analysis is performed, using the transition SST model which can predict the change of flow regime from laminar through transition to turbulent. The differential governing equations are discretized by the finite volume method. The investigations are conducted for Reynolds numbers ranging from 100 to 50,000 covering laminar, transitional and turbulent regimes, and for three length and three pitch ratios. The predictions are observed to show a good agreement with the measurements and published correlations of other authors. The analysis indicates that the large length ratio and small pitch ratio yields a higher heat transfer rate with relatively low performance penalty. The transition from laminar to turbulent regime is observed between Reynolds numbers of 2,500 to 3,500 for all cases. For almost all investigated cases the performance factors are greater than unity.
© The Authors, published by EDP Sciences, 2018
This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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