ABSTRACT
The study's main objective is to assess a channel heat exchanger's thermal and hydraulic characteristics in the presence of turbulent air-flow at a fixed Reynolds number. Using two distinct versions of the obstacles in terms of their shape, fixation, and arrangement, the baffles and fins are implanted inside the channel. To convert a conventional flow path into a wave-shaped one, a first model contains rectangular baffles alternately distributed throughout the channel surfaces. According to the horizontal axis of the channel, between the edges of the baffles in the first type, the second model relates to square and in-line deflectors (fins). On each of the channel's solid bounds, the boundary criteria are specified. An k-ε turbulence model was used to build the mathematical model for flow and energy. As might be predicted, the pressure, velocity, and temperature fields exhibit the greatest fluctuations in the areas closest to the obstacles.
KEYWORDS
PAPER SUBMITTED: 2022-02-23
PAPER REVISED: 2022-03-14
PAPER ACCEPTED: 2022-03-27
PUBLISHED ONLINE: 2023-04-08
- Rani, P., Tripathy, P. P., Experimental Investigation on Heat Transfer Performance of Solar Collector with Baffles and Semicircular Loops Fins Under Varied Air Mass-flow Rates, International Journal of Thermal Sciences, 178 (2022), 107597
- Promvonge, P., Skullong, S., Thermal-Hydraulic Performance Enhancement of Solar Receiver Channel by Flapped V-Baffles, Chemical Engineering Research and Design, 182 (2022), June, pp. 87-97
- El Habet, M. A., et al., The Effect of Using Staggered and Partially Tilted Perforated Baffles on Heat Transfer and Flow Characteristics in A Rectangular Channel, International Journal of Thermal Sciences, 174 (2022), 107422
- Bhattacharyya, S., et al., Thermo-Hydraulic Performance of Magnetic Baffles for Removal of Concentrated Heat Fluxes in a Heated Mini Channel, Applied Thermal Engineering, 216 (2022), 118992
- Yadav, A. S., et al., Performance Enhancement of Solar Air Heater by Attaching Artificial Rib Roughness on the Absorber Plate, Materials Today, Proceedings, 63 (2022), 7, pp. 706-717
- Mohit, M. K., Gupta, R., Numerical Investigation of the Performance of Rectangular Micro-Channel Equipped with Micro-Pin-Fin, Case Studies in Thermal Engineering, 32 (2022), 101884
- Boonloi, A., Jedsadaratanachai, W., The CFD Analysis on Heat Transfer Characteristics and Fluid-Flow Structure in a Square Duct with Modified Wavy Baffles, Case Studies in Thermal Engineering, 29 (2022), 101660
- Sharma, A., et al., Experimental Investigation and Optimization of Potential Parameters of Discrete V Down Baffled Solar Thermal Collector Using Hybrid Taguchi-TOPSIS Method, Applied Thermal Engineering, 209 (2022), 118250
- Kumar, R., et al., Thermo-Hydraulic Efficiency and Correlation Development of an Indoor Designed Jet Impingement Solar Thermal Collector Roughened with Discrete Multi-Arc Ribs, Renewable Energy, 189 (2022), Apr., pp. 1259-1277
- Singh, H., et al., The CFD Simulation of Thermal Hydraulic Performance of Rectangular Solar Air Heater with Combination of Boot Rib Roughness, Materials Today, Proceedings, 65 (2022), 8, pp. 3860-3865
- Chand, S., et al., Thermal Performance Enhancement of Solar Air Heater Using Louvered Fins Collector, Solar Energy, 239 (2022), June, pp. 10-24
- Li, Z. X., et al., The Effect of Trapezoidal Baffles on Heat and Flow Characteristics of a Cross-Corrugated Triangular Duct, Case Studies in Thermal Engineering, 33 (2022), 101903
- Ismael, M. A., Forced Convection in Partially Compliant Channel with Two Alternated Baffles, International Journal of Heat and Mass Transfer, 142 (2022), 118455
- Kitayama, S., et al., Numerical Optimization of Baffle Configuration in Header of Heat Exchanger Using Sequential Approximate Optimization, Simulation Modelling Practice and Theory, 115 (2022), 102429
- Sriromreun, P., et al., Experimental and Numerical Study on Heat Transfer Enhancement in a Channel with Z-Shaped Baffles, International Communications in Heat and Mass Transfer, 39 (2012), 7, pp. 945-952
- 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
- Siddiqui, M. K., Heat Transfer Augmentation in a Heat Exchanger Tube Using a Baffle, International Journal of Heat and Fluid-flow, 28 (2007), 2, pp. 318-328
- 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
- Patankar, S.V., Numerical Heat Transfer and Fluid-flow, McGraw-Hill, New York, USA, 1980
- 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
- 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
