Influence of Inserted Different Ribs Configuration in 2D Horizontal Channel on Characteristics Turbulent Fluid Flow and Forced Heat Transfer: A Numerical Investigation
Article Sidebar
Main Article Content
Abstract
The current study deals with the analysis of a two-dimensional (2D) single-phase turbulent airflow in a channel having ribs of different configurations. COMSOL Multiphysics software was used to investigate all cases that were carried out numerically using the standard k-ε model. Several parameters were studied as a variable function against the Reynolds number in ranges (9000 to 18000), including the rate of heat transfer, friction factor, and pressure difference of all rib shapes compared to the empty channel. The shape plays an important role in the characteristics of fluid flow and heat transfer distribution and the circular rib shows better heat transfer performance and friction factor compared to the normal channel and other designs, therefore, the circular design ensures improved thermal-hydraulic performance. Also, the percentage of increase in the heat transfer rate represented by Nusselt number (71.48, 69.99, and 67.29%) for rib designs (quarter circle, square, and triangle) respectively compared to the channel without ribs. As the Reynolds number rises, the pressure drop across the fluid entry-exit zone of the channel is influenced by the ribs being inserted inside as well as when the channel is empty.
Article Details
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
References
Promvonge P, Skullong S, Kwankaomeng S, Thiangpong C. Heat transfer in square duct fitted diagonally with angle-finned tape—part 1: experimental study. Int Commun Heat Mass Transf. 2012;39(5):617-624.
Promvonge P, Skullong S, Kwankaomeng S, Thiangpong C. Heat transfer in square duct fitted diagonally with angle-finned tape—part 2: numerical study. Int Commun Heat Mass Transf. 2012;39(5):625-633.
Thianpong C, Chompookham T, Skullong S, Promvonge P. Thermal characterization of turbulent flow in a channel with isosceles triangular ribs. Int Commun Heat Mass Transf. 2009;36(7):712-717.
Skullong S, Kwankaomeng S, Thianpong C, Promvonge P. Thermal performance of turbulent flow in a solar air heater channel with rib-groove turbulators. Int Commun Heat Mass Transf. 2014;50:34-43.
Promvonge P, Sripattanapipat S, Kwankaomeng S. Laminar periodic flow and heat transfer in square channel with 45 inline baffles on two opposite walls. Int J Therm Sci. 2010;49(6):963-975.
Sriromreun P, Thianpong C, Promvonge P. Experimental and numerical study on heat transfer enhancement in a channel with Z-shaped baffles. Int Commun Heat Mass Transf. 2012;39(7):945-952.
Tamna S, Skullong S, Thianpong C, Promvonge P. Heat transfer behaviors in a solar air heater channel with multiple V-baffle vortex generators. Sol Energy. 2014;110:720-735.
Promvonge P. Thermal performance in circular tube fitted with coiled square wires. Energy Convers Manage. 2008;49(5):980-987.
Chang SW, Gao JY, Shih HL. Thermal performances of turbulent tubular flows enhanced by ribbed and grooved wire coils. Int J Heat Mass Transf. 2015;90:1109-1124.
Eiamsa-Ard S, Thianpong C, Promvonge P. Experimental investigation of heat transfer and flow friction in a circular tube fitted with regularly spaced twisted tape elements. Int Commun Heat Mass Transf. 2006;33(10):1225-1233.
Eiamsa-Ard S, Promvonge P. Performance assessment in a heat exchanger tube with alternate clockwise and counter-clockwise twisted-tape inserts. Int J Heat Mass Transf. 2010;53(7-8):1364-1372.
Chang SW, Guo MH. Thermal performances of enhanced smooth and spiky twisted tapes for laminar and turbulent tubular flows. Int J Heat Mass Transf. 2012;55(25-26):7651-7667.
Chokphoemphun S, Pimsarn M, Thianpong C, Promvonge P. Thermal performance of tubular heat exchanger with multiple twisted-tape inserts. Chin J Chem Eng. 2015;23(5):755-762.
Min C, Qi C, Wang E, Tian L, Qin Y. Numerical investigation of turbulent flow and heat transfer in a channel with novel longitudinal vortex generators. Int J Heat Mass Transf. 2012;55(23-24):7268-7277.
Zhou G, Ye Q. Experimental investigations of thermal and flow characteristics of curved trapezoidal winglet type vortex generators. Appl Therm Eng. 2012;37:241-248.
Zhou G, Feng Z. Experimental investigations of heat transfer enhancement by plane and curved winglet type vortex generators with punched holes. Int J Therm Sci. 2014;78:26-35.
Chokphoemphun S, Pimsarn M, Thianpong C, Promvonge P. Heat transfer augmentation in a circular tube with winglet vortex generators. Chin J Chem Eng. 2015;23(4):605-614.
Lu Z, Li M, Yang C, Cheng X, Zhang J. Experimental and numerical study on the heat transfer and flow characteristics of micro-gap chip with longitudinal vortex generator array. Case Stud Therm Eng. 2023;45:102979.
Zhao L, Qian Z, Wang X, Wang Q, Li C, Zhang Z. Analysis of the thermal improvement of plate fin-tube heat exchanger with straight and curved rectangular winglet vortex generators. Case Stud Therm Eng. 2023;51:103612.
Skullong S, Promvonge P, Thianpong C, Pimsarn M. Heat transfer and turbulent flow friction in a round tube with staggered-winglet perforated-tapes. Int J Heat Mass Transf. 2016;95:230-242.
Sinha A, Chattopadhyay H, Iyengar AK, Biswas G. Enhancement of heat transfer in a fin-tube heat exchanger using rectangular winglet type vortex generators. Int J Heat Mass Transf. 2016;101:667-681.
Ohta T, Mitsuishi A, Shimura T, Iwamoto K, Murata A. Dependence of mainstream angle of vortex generator arrays on heat transfer enhancement in boundary layer flow on flat plate based on direct numerical simulation. Int J Heat Mass Transf. 2022;198:123362.
Aridi R, Ali S, Lemenand T, Faraj J, Khaled M. Innovative concept of vortex generator-equipped multi-drain heat recovery systems–numerical study and energetic analysis. Int J Thermofluids. 2023;20:100455.
Elwekeel FN, Zheng Q, Abdala AM. Air/mist cooling in a rectangular duct with varying shapes of ribs. Proc Inst Mech Eng C: J Mech Eng Sci. 2014;228(11):1925-1935.
Gawande VB, Dhoble AS, Zodpe DB, Chamoli S. Experimental and CFD investigation of convection heat transfer in solar air heater with reverse L-shaped ribs. Sol Energy. 2016;131:275-295.