Inscrição na biblioteca: Guest
Portal Digital Begell Biblioteca digital da Begell eBooks Diários Referências e Anais Coleções de pesquisa
Computational Thermal Sciences: An International Journal
ESCI SJR: 0.249 SNIP: 0.434 CiteScore™: 0.7

ISSN Imprimir: 1940-2503
ISSN On-line: 1940-2554

Computational Thermal Sciences: An International Journal

DOI: 10.1615/ComputThermalScien.2018024450
pages 233-242

STUDY AND ANALYSIS OF THE DYNAMIC THERMAL-ENERGY BEHAVIOR OF A FLAT PLATE CONVERTER SYSTEM

Nabila Guendouz
Unit of Research on Materials and Renewable Energies, URMER, Physics Department Faculty of Sciences, Abou Bekr Belkaïd University, BP 119-13000-Tlemcen, Algeria
Nasr-Eddine Bibi Triki
Unit of Research on Materials and Renewable Energies, URMER, Physics Department Faculty of Sciences, Abou Bekr Belkaïd University, BP 119-13000-Tlemcen, Algeria
Didi Faouzi
Unit of Research on Materials and Renewable Energies, URMER, Physics Department Faculty of Sciences, Abou Bekr Belkaïd University, BP 119-13000-Tlemcen, Algeria
Chafika Zidani
Unit of Research on Materials and Renewable Energies, URMER, Physics Department Faculty of Sciences, Abou Bekr Belkaïd University, BP 119-13000-Tlemcen, Algeria

RESUMO

In this paper, air flow through a two-dimensional horizontal rectangular cross-section channel in the presence of a Z-shaped baffle pair has been numerically examined and analyzed in the steady turbulent regime. The calculations are based on the finite volume approach, and the average Navier-Stokes equations along with the energy equation have been solved using the SIMPLE algorithm. The nonuniform structured quadrilateral-type element mesh is used for the investigated whole domain. The fluid flow patterns are presented for Reynolds numbers based on the hydraulic diameter of the channel ranging from 5000 to 20,000. Effects of various Reynolds number values on flow fields, dimensionless axial velocity profiles, as well as local and average friction coefficients in the test channel are presented. The obtained results show that the flow structure is characterized by strong deformations and large recirculation regions, and in general, the fluid velocity and skin friction loss rise with the increase in the flow rate in terms of Reynolds numbers.

Referências

  1. Chang, C.H. and Huang, W.H., Numerical Prediction for Laminar Forced Convection in Parallel-Plate Channels with Tranverse Fin Arrays, Int. J. Heat Mass Transfer, vol. 34, no. 11, pp. 2739–2749, 1991.

  2. Dermatni, L.C., Vielmo, H.A., and Moller, S.V., Numeric and Experimental Analysis of the Turbulent Flow through a Channel with Baffle Plates, J. Braz. Soc. Mech. Sci. Eng., vol. 26, no. 2, pp. 153–159, 2004.

  3. Dutta, P. and Dutta, S., Effect of Baffle Size, Perforation, and Orientation on Internal Heat Transfer Enhancement, Int. J. Heat Mass Transfer, vol. 41, pp. 3005–3013, 1998.

  4. Gbaha, P., Etude et Optimisation des Echanges Thermiques et des Performances des Capteurs Solaires Plans a Deux Veines D’air, Th`ese de doctorat, Universit´e de Valenciennes, France, 1989.

  5. Kelkar, K.M. and Patankar, S.V., Numerical Prediction of Flow and Heat Transfer in Parallel Plate Channel with Staggered Fins, J. Heat Transfer, vol. 109, pp. 25–30, 1987.

  6. Lopez, J.R., Anand, N.K., and Fletcher, L.S, Heat Transfer in a Three–Dimensional Channel with Baffles, Numer. Heat Transfer, vol. 30, pp. 189–205, 1996.

  7. Nasiruddin and Kamran Siddiqui, M.H., Heat Transfer Augmentation in a Heat Exchanger Tube using a Baffle, Int. J. Heat Fluid Flow, vol. 28, pp. 318–328, 2006.

  8. Tandiroglu, A., Effect of Flow Geometry Parameters on Transient Heat Transfer for Turbulent Flow in a Circular Tube with Baffle Inserts, Int. J. Heat Mass Transfer, vol. 49, pp. 1559–1567, 2006.

  9. Ward, S., Optimization of the Forms and Provisions of Obstacles in the Mobile Air Vein of Solar Air Collectors at Two Air Layers for the Maximization of the Couple Efficiency–Rise in Temperature, Thesis of speciality in energetics, University of Valenciennes, Franc.

  10. Roetzel,W. and Lee, D.W., Effect of Baffle/Shell Leakage Flow on Heat Transfer in Shell–and–Tube Heat Exchanger, Exp. Therm. Fluid Sci., vol. 8, pp. 10–20, 1994.


Articles with similar content:

NUMERICAL ANALYSIS OF FLOW REGIMES IN DEVELOPING MIXED CONVECTION OF AIR FLOW IN A VERTICAL TUBE WITH VARIABLE FLUID PROPERTIES
ICHMT DIGITAL LIBRARY ONLINE, Vol.13, 2008, issue
Amin Behzadmehr, Andre Laneville
CONVECTIVE HEAT TRANSFER IN MHD CHANNELS
International Heat Transfer Conference 7, Vol.6, 1982, issue
V. K. Shikov, B. S. Petukhov, B. E. Kharin, V. N. Dvortsov
Numerical analysis of laminar and turbulent flow regimes in developing mixed convection
International Heat Transfer Conference 12, Vol.11, 2002, issue
Amin Behzadmehr, Andre Laneville, Nicolas Galanis
LOCAL HEAT TRANSFER IN 3-D TURBULENT FLOW THROUGH DUCTS ROTATING IN THE ORTHOGONAL MODE
International Heat Transfer Conference 10, Vol.10, 1994, issue
A. E. Khodak, A. I. Kirillov, Evgueni M. Smirnov, Vladimir V. Ris
FINITE DIFFERENCE SOLUTION ON NON-STAGGERED GRID FOR LAMINAR FLOW THROUGH SQUARE-EDGED ORIFICE
Energy and the Environment, 1998, Vol.0, 1998, issue
Hakan Fehmi Oztop, Haydar Eren, Ihsan Dagtekin