“…Similar trends of an increasing average Nu with rising Re have been reported in the literature by Refs. [ 15 , 19 , 22 , 26 ], and [ 46 ]. Fig.…”
Section: Resultsmentioning
confidence: 99%
“…The average Nusselt number at the tube surface is denoted in Eqn. (8) as follows [ 15 , 19 ]: where = heat flux applied on the wall of corrugated section, and = temperature difference, which is presented in Eqn. (9) as follows [ 15 , 19 ]: where T o and T i denote the average outlet and inlet temperatures, while T wo and T wi refer to the wall temperatures of tube at the outlet and inlet.…”
Section: Numerical Methodologymentioning
confidence: 99%
“…Pumping power per unit length, , is defined in Eqn. (10) as follows [ 15 , 19 ]: where L = length of the tube and = pressure difference.…”
Section: Numerical Methodologymentioning
confidence: 99%
“…Researchers claimed that optimizing heat transfer surfaces, inducing flow disturbances, and altering flow patterns, can significantly enhance heat transfer rates. The most widely used techniques to accelerate heat transmission rate include the use of vortex generators [ 6 ], inserts [ 7 ], turbulators [ 8 , 9 ], obstructions [ 10 ], cavities [ 11 ], reentrance [ 12 ], converging and diverging areas [ 13 ], magnetic fields [ 14 ], adding nanoparticles [ 15 ], secondary flow [ 16 ], and surface corrugation [ [17] , [18] , [19] ]. These methods are frequently employed either individually or in combination, especially in compact heat exchanger contexts.…”
Section: Introductionmentioning
confidence: 99%
“…These methods are frequently employed either individually or in combination, especially in compact heat exchanger contexts. Numerous studies [ [6] , [7] , [8] , [9] , [10] , [11] , [12] , [13] , [14] , [15] , [16] , [17] , [18] , [19] ] in the existing body of literature have investigated heat transfer analysis under constant heat flux or constant temperature, and nearly all of them have reported enhancements in thermal performance compared to conventional cooling methods.…”
“…Similar trends of an increasing average Nu with rising Re have been reported in the literature by Refs. [ 15 , 19 , 22 , 26 ], and [ 46 ]. Fig.…”
Section: Resultsmentioning
confidence: 99%
“…The average Nusselt number at the tube surface is denoted in Eqn. (8) as follows [ 15 , 19 ]: where = heat flux applied on the wall of corrugated section, and = temperature difference, which is presented in Eqn. (9) as follows [ 15 , 19 ]: where T o and T i denote the average outlet and inlet temperatures, while T wo and T wi refer to the wall temperatures of tube at the outlet and inlet.…”
Section: Numerical Methodologymentioning
confidence: 99%
“…Pumping power per unit length, , is defined in Eqn. (10) as follows [ 15 , 19 ]: where L = length of the tube and = pressure difference.…”
Section: Numerical Methodologymentioning
confidence: 99%
“…Researchers claimed that optimizing heat transfer surfaces, inducing flow disturbances, and altering flow patterns, can significantly enhance heat transfer rates. The most widely used techniques to accelerate heat transmission rate include the use of vortex generators [ 6 ], inserts [ 7 ], turbulators [ 8 , 9 ], obstructions [ 10 ], cavities [ 11 ], reentrance [ 12 ], converging and diverging areas [ 13 ], magnetic fields [ 14 ], adding nanoparticles [ 15 ], secondary flow [ 16 ], and surface corrugation [ [17] , [18] , [19] ]. These methods are frequently employed either individually or in combination, especially in compact heat exchanger contexts.…”
Section: Introductionmentioning
confidence: 99%
“…These methods are frequently employed either individually or in combination, especially in compact heat exchanger contexts. Numerous studies [ [6] , [7] , [8] , [9] , [10] , [11] , [12] , [13] , [14] , [15] , [16] , [17] , [18] , [19] ] in the existing body of literature have investigated heat transfer analysis under constant heat flux or constant temperature, and nearly all of them have reported enhancements in thermal performance compared to conventional cooling methods.…”
The physical properties of working fluids—in terms of the Prandtl number—play a crucial role in determining their thermal performance in the internal flow, especially their viscosity. This study first considers the thermo-hydraulic and entropy generation of a sinusoidal corrugated channel in two configurations: symmetrical (raccoon) and asymmetrical (serpentine). Results are presented for different ranges of operating parameters, such as 100≤Re≤700 and 0.72≤Pr≤90, and for geometrical parameters such as the wave amplitude-to-wavelength ratio 0.2≤α≤0.6. In addition, the results of the two channels were compared with each other's and with the straight channel. Control transport equations are solved using finite element methods. It was found that the flow inside the wavy channels generated re-circulatory reigns, and their size was affected by the wave parameters as well as the Reynolds number. Also, employing high values of Pr extremely enhanced the heat transfer rate (HTR) of the wavy channels over the straight for all values of α and for both raccoon and serpentine channels. In addition, the results indicated that raccoon channels have higher HTR and performance factor compared to the serpentine channel. Finally, the thermal entropy generation dominated over the viscous entropy generation and its decrease with both Reynolds number and Prandtl number for raccoon and serpentine channels. This study focused on the heat transfer enhancement of the corrugated channels due to their importance in many industrial applications where the heat dissipation is critical to their work, including heat exchangers and heat sinks. Thus, the current numerical simulation primarily suggests utilizing the raccoon channel over the serpentine one, due to its higher thermal performance and nearly the same total entropy generation.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
