THERMAL SCIENCE

International Scientific Journal

Hassoun Zakaria Sari

,

Khaled Aliane

,

Yun-Hui Zhao

,

Hijaz Ahmad

,

Younes Menni

,

Giulio Lorenzini

EFFECT OF OBSTACLES ON TURBULENT FLOWS IN A RECTANGULAR CHANNEL FROM THEIR FRONT SIDES

ABSTRACT
In this piece, the impact of an obstacle's upstream edge inclination in a rectangular channel is investigated. The main purpose of this study is to give a better understanding of this associated phenomenon by reflecting more accurately the different cooling techniques and to get as close as possible to real conditions of use. This study is based on the laws of conservation of mass, momentum, and energy, the equations are given in the case of the 2-D flow of an incompressible Newtonian fluid, depending on the variables primitives given below. During the study, we used the FLUENT computer code, as well as its GAMBIT mesh generator several times, which allowed us to become more familiar with numerical simulation. The purpose of our numerical research is to clarify physical phenomena that are described by theory without using more expensive experimentation.
KEYWORDS
turbulent flows, staggered obstacles, upstream edges of obstacles, streamlines, dynamic-pressure, velocity, numerical study
PAPER SUBMITTED: 2022-04-19
PAPER REVISED: 2022-05-04
PAPER ACCEPTED: 2022-06-17
PUBLISHED ONLINE: 2023-04-08
DOI REFERENCE: https://doi.org/10.2298/TSCI23S1333S
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2023, VOLUME 27, ISSUE Special issue 1, PAGES [333 - 341]
REFERENCES
  1. Abdi, G., et al., The 3-D Evaluation of a Thermal and Hydraulic Winged Solar Collector, Instrumentation, Mesures, Métrologies, 21 (2022), 2, pp. 35-41
  2. Boursas, A., et al., Enhanced heat Transfer by Oil/Multi-Walled Carbon NanoTubes Nanofluid, Annales de Chimie-Science des Matériaux, 45 (2021), 2, pp. 93-103
  3. Menni, Y., et al., Analysis of Thermo-hydraulic Performance of a Solar Air Heater Tube with Modern Obstacles, Archives of Thermodynamics, 41 (2020), 3, pp. 33-56
  4. Chamkha, A. J., Menni, Y., Hydrogen Flow over a Detached V-shaped Rib in a Rectangular Channel, Mathematical Modelling of Engineering Problems, 7 (2020), 2, pp. 178-186
  5. Jiang, Y., et al., Effect of Area Ratio and Reynolds Number on the Distribution of Discharge in Dividing Manifold, International Journal of Low-Carbon Technologies, 17 (2022), May, pp. 1271-1279
  6. Keramat, F., Izadpanah, A. A., Thermo-Hydraulic Performance Analysis of Converging-Diverging Heat Exchanger With Inclined Fins Using Computational Fluid Dynamics, Journal of the Taiwan Institute of Chemical Engineers, 132 (2022), 104119
  7. El-Said, E. M., et al., Tubular Solar Air Heater Using Finned Semi-Cylindrical Absorber Plate With Swirl Flow: Experimental Investigation, Solar Energy, 236 (2022), Apr., pp. 879-897
  8. Saravanakumar, P. T., et al., Exergetic Investigation and Optimization of Arc Shaped Rib Roughened Solar Air Heater Integrated With Fins And Baffles, Applied Thermal Engineering, 175 (2020), 115316
  9. Feng, C. N., et al., Friction Factor and Heat Transfer Evaluation of Cross-Corrugated Triangular Flow Channels With Trapezoidal Baffles, Energy and Buildings, 257 (2022), 111816
  10. El Habet, M. A., et al., Thermal/Hydraulic Characteristics of a Rectangular Channel With Inline/Staggered Perforated Baffles, International Communications in Heat and Mass Transfer, 128 (2021), 105591
  11. Tian, H., et al., Assessment and Optimization of Exhaust Gas Heat Exchanger With Porous Baffles and Porous Fins, Applied Thermal Engineering, 178 (2020), 115446
  12. Alnak, D. E., Thermohydraulic Performance Study of Different Square Baffle Angles in Cross-Corrugated Channel, Journal of Energy Storage, 28 (2020), 101295
  13. Demartini, L. C., et al., Numeric and Experimental Analysis of the Turbulent Flow through a Channel With Baffle Plates, Journal of the Brazilian Society of Mechanical Sciences and Engineering, 26 (2004), 2, pp. 153-159
  14. Launder, B. E., Spalding, D. B., The Numerical Computation of Turbulent Flow, Computer Methods in Applied Mechanics and Engineering, 3 (1974), 2, pp. 269-289
  15. Yang, Y. T., Hwang, C. Z., Calculation of Turbulent Flow and Heat Transfer in a Porous-Baffled Channel, International Journal of Heat and Mass Transfer, 46 (2003), 5, pp. 771-780
  16. Patankar, S. V., Numerical Heat Transfer and Fluid-Flow, McGraw-Hill, New York, USA, 1980
  17. Leonard, B. P., Mokhtari, S., Ultra-Sharp Non-Oscillatory Convection Schemes for High-Speed Steady Multidimensional Flow, NASA TM 1-2568, NASA Lewis Research Center, Cleveland, O., USA, 1990
  18. Menni, S., Belabbaci, F., Study of the Dynamic Structure of Turbulent Flow around an Obstacle: Effect of Thermal Stratification, Etude des écoulements turbulents autours d'un obstacle: effet de la rugosité couplé à l'inclinaison (in French), M. Sc. thesis, Université Aboubakr Belkaïd-Tlemcen, 2022
PDF VERSION [DOWNLOAD]
Effect of obstacles on turbulent flows in a rectangular channel from their front sides

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence