A. D. Surnin

THE EFFECT OF COOLANT FLOW RATE ON THE COOLING EFFICIENCY OF A FINNED TUBE

The problem of conjugate heat transfer in a radiator cooling element is solved by numerical methods. The study solves the problem of the motion of continuous media, which is described by the system of the Navier–Stokes equations and the heat transfer equation. These equations are numerically integrated by the control volume method within the OpenFOAM open-source computational platform. The optimal number of grid elements was determined through grid convergence analysis. The obtained results enable the assessment of fluid heating along the channel length and the temperature gradient between the tube wall and the surrounding air. The data obtained for various flow rates of the working fluid inside the finned tube were analyzed, and recommendations for use are given.

References:

1. Koroleva, M.R., Saburova, E.A., and Chernova, A.A. Studying the efficiency of cooling and resistance of ribbed tubular elements. Journal of Physics: Conference Series, 2020, 1675, 012009. DOI: 10.1088/1742-6596/1675/1/012009.
2. Gizzatullina, A., Koroleva, M., Mishchenkova, O., and Chernova, A. Numerical investigation of cooling down and aerodynamic resistance processes in ribbed tubular elements. In: 2020 Ivannikov Ispras Open Conference (ISPRAS), Moscow, Russia, December 10–11, 2020, IEEE, 2020, pp. 142–149. DOI: 10.1109/ISPRAS51486.2020.00028.
3. Baimetova, E.S., Gizzatullina, A.F., Koroleva, M.R., Mishchenkova, O.V., Pushkarev, F.N., and Chernova, A.A. Heat load of bimetallic ribbed tube. Trudy ISP RAN, 2021, 33 (5), 271–282. (In Russian).
4. Baymetova, E.S., Chernova, A.A., Koroleva, M.R., and Kelemen, M. Optimization of the developed outer surface of an industrial oil cooler. MM Science Journal, 2021, 2021 (June), 4764–4768. DOI: 10.17973/MMSJ.2021_10_2021027.
5. Zhao, W., Wang, Q., and Liu, P. The experimental investigation of recirculation of air-cooled system for a large power plant. Energy and Power Engineering, 2010, 2, 291–297. DOI: 10.4236/epe.2010.24041.
6. Fedorov, V.A., Milman, O., Ananyev, P.A., Ptahin, A.V., Zhinov, A.A., Karyshev, A.K., and Shevelev, D.V. Results of experimental and computational analysis of air flow in the circle channels of the air-cooled condensers of steam power plants. Vestnik MGTU im. N.E. Baumana, Seriya Mashinostroenie, 2015, 5, 87–105. (In Russian). DOI: 10.18698/0236-3941-2015-5-87-105.
7. Zhukauskas, A.A. Konvektivnyi teploobmen v teploobmennikakh [Convective Transfer in Heat Exchangers]. Nauka Publ., Moscow, 1982, 472 p. (In Russian).
8. Garcia, A., Vicente, P.G., and Viedma, A. Experimental study of heat transfer enhancement with wire coil inserts in laminar-transition-turbulent regimes at different Prandtl numbers. International Journal of Heat and Mass Transfer, 2005, 48 (21–22), 4640–4651. DOI: 10.1016/j.ijheatmasstransfer.2005.04.024.
9. Baimetova, E.S., Gizzatullina, A.F., and Pushkarev, F.N. Solving the conjugate heat transfer problem in the ribbed tube with OpenFOAM. Khimicheskaya Fizika i Mezoskopiya, 2021, 23 (2), 154–164. (In Russian). DOI: 10.15350/17270529.2021.2.14.
10. Koroleva, M.R., Mishchenkova, O.V., Kelemen, M., and Chernova, A.A. Theoretical research of the internal gas dynamics processes of measurements of hot air curtain with cross-flow fan. MM Science Journal, 2020, 2020 (June), 3966–3972. DOI: 10.17973/MMSJ.2020_06_2020028.
11. Raeder, T., Tenenev, V.A., Koroleva, M.R., and Mishchenkova, O.V. Nonlinear processes in safety systems for substances with parameters close to a critical state. Russian Journal of Nonlinear Dynamics, 2021, 17 (1), 119–138. DOI: 10.20537/nd210109.
12. Volkov, K.N. and Emelianov, V.N. Vychislitelnye tekhnologii v zadachakh mekhaniki zhidkosti i gaza [Computational Technologies in the Problems of Fluid and Gas Mechanics]. Fizmatlit Publ., Moscow, 2012, 468 p. (In Russian).
13. Korolyova, M.R., Terentyev, А.N., and Chernova, А.А. Fluid dynamics of a complicated collector. Vestnik RGATA Imeni P.A. Solovyeva, 2021, 3 (58), 50–55.
14. Isachenko, V.P., Osipova, V.A., and Sukomel, A.S. Teploperedacha [Heat Transfer]. OOO TID Aris Publ., Moscow, 2014, 416 p.
15. Available at: https://openfoamwiki.net/index.php/ChtMultiRegionFoam (circulation date 21.05.2024).
16. Available at: https://www.openfoam.com/documentation/user-guide/4-mesh-generation-and-conversion/4.3-mesh-generation-with-the-blockmesh-utility (circulation date21.05.2024).
17. Available at: https://doc.openfoam.com/2306/tools/pre-processing/mesh/manipulation/topoSet/
18. Available at: http://www.paraview.org/ (circulation date 21.05.2024).
19. Sukhanovskii, A. and Vasiliev, A. Physical mechanism of the convective heat flux increasing in case of mixed boundary conditions in Rayleigh-Bénard convection. International Journal of Heat and Mass Transfer, 2022, 185, 122411. DOI 10.1016/j.ijheatmasstransfer.2021.122411.

Article reference