Analysis of experimental data on aerodynamic drag of flat-oval tube bundles
DOI:
https://doi.org/10.15587/1729-4061.2015.55529Keywords:
flat-oval tube, staggered bundle, aerodynamic drag, influence, calculation, generalized relationshipsAbstract
The paper deals with experimental research of aerodynamic drag and synthesis of data for virtually unstudied staggered bundles of flat-oval tubes at transverse air flow around. Experiments were conducted in an open-circuit rectangular cross-section wind tunnel in the range of Reynolds numbers from 2000 to 30000. In the processing and analysis of experimental data and dependences of the Euler numbers on the Reynolds numbers of flat-oval tube bundles, much attention was paid to factors which may influence the aerodynamic drag. During the experiments, several factors were identified: operation factor - flow rate W, geometrical factors - back and long pitches between tubes, the ratio of longitudinal and transverse dimensions of the tube (profile elongation) d2/d1. Based on the data obtained, generalized relationships for calculating the aerodynamic drag of staggered bundles of flat-oval tubes in a wide range of operation parameters and geometrical characteristics of tubes and bundles were developed.
References
- Antuf’ev, V. M., Beletskyi, G. S. (1948). Heat transfer and aerodynamic drags of tube surfaces in crossflow. Moskow, USSR: Mashgiz, 119.
- Case, V. M., London, A. L. (1967). Compact heat exchangers. Moskow, USSR: Energy, 224.
- Antuf’ev, V. M. (1966). Efficiency of different forms of heating convective surfaces. Moskow, USSR: Energy, 184.
- Burkov, V. K., Medvedskii, V. P., Kochegarova, I. Y., Lafa, Y. I. (2010). Investigation of heat transfer and aerodynamics beams of oval tubes. Thermal Engineering, 3, 42–45.
- Ala Ali Hasan (2004). Thermal-hydraulic perfomance of oval tubes in a cross-flow of air. Heat and Mass Transfer, accepted for publication. ТHP 2004 by author and ТHP 2004 Springer-Verlag. By permission, 1–32.
- Zhukova, Yu. V., Terekh, A. M., Semenyako, A. V. (2010). Aerodynamic drag and heat transfer of flat-oval tube at the forced convection. Labours of V Russian National Сonference of Heat Transfer. Moscow, Russia, 2, 126–128.
- Zhukauskas, A. A. (1982). Convective transfer in heat exchangers. Science, 472.
- Tahseen, T. A., Ishak, M., Rahman, M. M. (2012). A numerical study of forced convection heat transfer over a series of flat tubes between parallel plates. Journal of Mechanical Engineering and Sciences, 3, 271–280.
- Zeinab, S. A.-R. (2013). Heat Transfer Characteristics and Fluid Flow past Staggered Flat-Tube Bank Using CFD. International Journal of Mechanical, Aerospace, Industrial, Mechatronic and Manufacturing Engineering, 7, (10), 842–848.
- Ishak, M., Tahseen, Tahseen A., Rahman, Md. M. (2013). Experimental investigation on heat transfer and pressure drop characteristics of air flow over a staggered flat tube bank in crossflow. International Journal of Automotive and Mechanical Engineering, 7, 900–911.
- Tahseen, T. A., Rahman, M. M., Ishak, M. (2014). An experimental study of air flow and heat transfer over in–line flat tube bank. International Journal of Automotive and Mechanical Engineering, 9, 1487–1500.
- Kondratyuk, V. A., Tuz, V. E., Terekh, A. M., Zhukova, Yu. V., Meyris, A. J. (2012). Aerodynamic drag of transversal-streamlined staggered bundles of flat-oval tubes. Eastern-European Journal of Enterprise Technologies, 3/8 (57), 39–42. Available at: http://journals.uran.ua/eejet/article/view/4074/3740
- Pismennyi, E. N. (2004). Heat Transfer and aerodynamic drag of tubes bundles with transversal finns. Kyiv, Ukraine: Alterpress, 244.
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2015 Євген Миколайович Письменний, Вадим Анатолійович Кондратюк, Олександр Михайлович Терех, Олександр Ігоревич Руденко, Олександр Володимирович Баранюк
This work is licensed under a Creative Commons Attribution 4.0 International License.
The consolidation and conditions for the transfer of copyright (identification of authorship) is carried out in the License Agreement. In particular, the authors reserve the right to the authorship of their manuscript and transfer the first publication of this work to the journal under the terms of the Creative Commons CC BY license. At the same time, they have the right to conclude on their own additional agreements concerning the non-exclusive distribution of the work in the form in which it was published by this journal, but provided that the link to the first publication of the article in this journal is preserved.
A license agreement is a document in which the author warrants that he/she owns all copyright for the work (manuscript, article, etc.).
The authors, signing the License Agreement with TECHNOLOGY CENTER PC, have all rights to the further use of their work, provided that they link to our edition in which the work was published.
According to the terms of the License Agreement, the Publisher TECHNOLOGY CENTER PC does not take away your copyrights and receives permission from the authors to use and dissemination of the publication through the world's scientific resources (own electronic resources, scientometric databases, repositories, libraries, etc.).
In the absence of a signed License Agreement or in the absence of this agreement of identifiers allowing to identify the identity of the author, the editors have no right to work with the manuscript.
It is important to remember that there is another type of agreement between authors and publishers – when copyright is transferred from the authors to the publisher. In this case, the authors lose ownership of their work and may not use it in any way.
