Convective heat transfer and drag of two side-by-side tubes in the narrow channel at different Reynolds number
https://doi.org/10.29235/1561-8323-2018-62-6-756-762
Abstract
We studied numerically and experimentally convective heat transfer and drag of two side-by-side tubes in different arrangements in the narrow channel at the Reynolds number ranging from 8000 to 40000 in comparison with circular tubes. The visualization results of the flow structure in the wake behind the arrangements of the investigated tubes are presented. It is shown that the thermal and hydraulic performance of side-by-side drop-shaped tubes is by a factor of 1.2–2 higher than that of circular tubes due to a lower drag of drop-shaped tubes.
About the Authors
Yu. V. Zhukova
A. V. Luikov Heat and Mass Transfer Institute of the Academy of Sciences of Belarus, Minsk
Belarus
Ph. D. (Physics and Matematics), Leading researcher
Belarus
Ph. D. (Physics and Matematics), Leading researcher
A. M. Теrekh
Igor Sikorsky National Technical University of Ukraine “Kiev Polytechnic Institute”, Kiev
Ukraine
Ph. D. (Engineering), Senior researcher
Ukraine
Ph. D. (Engineering), Senior researcher
A. I. Rudenko
Igor Sikorsky National Technical University of Ukraine “Kiev Polytechnic Institute”, Kiev
Ukraine
Ph. B. (Engineеring), Associate professor
Ukraine
Ph. B. (Engineеring), Associate professor
References
1. Hasan Ala. Thermal-hydraulic performance of oval tubes in a cross-flow of air. Heat and Mass Transfer, 2005, vol. 41, no. 8, pp. 724–733. https://doi.org/10.1007/s00231-004-0612-7
2. Terukazu o., Nishiyama H., Taoka y. Heat transfer and flow around an elliptic cylinder. International Journal of Heat and Mass Transfer, 1984, vol. 27, no. 10, pp. 1771–1779. https://doi.org/10.1016/0017-9310(84)90159-5
3. Alam Md. M., Moriya M., Sakamoto H. Aerodynamic characteristics of two side-by-side circular cylinders and application of wavelet analysis on the switching phenomenon. Journal of Fluids and Structures, 2003, vol. 18, no. 3–4, pp. 325–346. https://doi.org/10.1016/j.jfluidstructs.2003.07.005
4. Alam Md. M., Zhou y. Flow around two side-by-side closely spaced circular cylinders. Journal of Fluids and Structures, 2007, vol. 23, no. 5, pp. 799–805. https://doi.org/10.1016/j.jfluidstructs.2006.12.002
5. Roach P. E. The generation of nearly isotropic turbulence by means of grids. International Journal of Heat and Fluid Flow, 1987, vol. 8, no. 2, pp. 82–92. https://doi.org/10.1016/0142-727x(87)90001-4
6. Rudenko A. I., Tereh A. M., Semenyako A. V., Nishchik A. P., Baranyuk A. V. The method of the gas flow visualizing on the bodie’s surface of different shapes. Eastern-European Journal of Enterprise Technologies, 2011, vol. 1, no. 9(49), pp. 51–55 (in Russian).
7. Ansys Fluent. Pensylvania, Ansys Inc., 2011. 11 p. Available at: http//www.ansys.com (Accessed 2 December 2018).
8. Zhukova yu. V., Теrekh А. М., Semenyako А. V. Numerical simulation of unsteady cross-flow past an oval cylinder at various Reynolds numbers. Doklady Natsional’noi akademii nauk Belarusi = Doklady of the National Academy of Sciences of Belarus, 2011, vol. 55, no. 1, pp. 102–107 (in Russian).
9. Terekh M., Rudenko A. I., Zhukova y. V. Aerodynamic drag to flows about single drop-like tubes and visualizaton of these flows. Journal of Engineering Physics and Thermophysics, 2013, vol. 86, no. 2, pp. 378–384. https://doi.org/10.1007/ s10891-013-0844-9
10. kondratyuk V. A., Semenyako A. V., Теrekh А. М., Rudenko А. I., Zhukova yu. V. Heat transfer and aerodynamics of single oval-flat tubes. Sovremennaya nauka: issledovaniya, idei, rezultaty, tekhnologii = Modern Science: Studies, Ideas, Technologies, 2013, no. 1 (12), pp. 3–6
11. Skrypnik А. N., Shchelchkov А. V., Popov I. А., Ryzhkov D. V., Sverchkov S. А., Zhukova yu. V., Chornyi А. D., Zubkov N. N. Thermohydraulic Efficiency of Tubes with Internal Spiral Finning. Journal of Engineering Physics and Thermal Physics, 2018, vol. 91, no. 1, pp. 52–63. https://doi.org/10.1007/s10891-018-1718-y
12. Povkh I. l. Aerodynamic experiment in mechanical engineering. leningrad, 1974. 480 p. (in Russian).
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