Implication of corrugation profile on thermo-hydraulic characteristics of Cu-water nanofluid flow through partially filled porous channel

Bhowmick, Debayan; Randive, Pitambar R.; Pati, Sukumar

doi:10.1016/j.icheatmasstransfer.2021.105329

Cited by 32 publications

(23 citation statements)

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“…In this context, researchers have commonly used two methods for heat transfer enhancement; namely, active and passive ones. The passive method includes surface modifications such as corrugation at the channel wall, using baffles, blocks, twisted or helical tape (Jaferian et al , 2019; Li and Ake Sunden, 2018; Mereu et al , 2013; Tiwari and Moharana, 2019c; Zhang and Liu, 2020; Nandi and Chattopadhyay, 2013, 2014; Mehta et al , 2021), nanofluid and highly conductive porous media (Mehta and Pati, 2021a; Mehdi et al , 2014; Kameswaran et al , 2014; Bhowmick et al , 2021). While the active method needs external perturbation for flow with external sources such as electric or magnetic fields other than the pumping power.…”

Section: Introductionmentioning

confidence: 99%

“…A plethora of investigations have been reported in the past two decades analyzing the forced convection in corrugated channels (Rush et al , 1999; Wang and Chen, 2002; Rashidi et al , 2017; Pati et al , 2017; Akbarzadeh et al , 2019; Shubham et al , 2018; Bhowmick et al , 2021). Pehlivan et al (2013) analyzed experimentally the influence of corrugation angle on forced convection in corrugated channels and reported that the average Nusselt number increases with the corrugation angle in the regime of 1,500 ≤ Re ≤ 8,000.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of thermo-hydraulic and entropy generation characteristics for flow through ribbed-wavy channel

Mehta

Pati

Ahmed

et al. 2021

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Purpose The purpose of this study is to analyze the thermal, hydraulic and entropy generation characteristics for laminar flow of water through a ribbed-wavy channel with the top wall as wavy and bottom wall as flat with ribs of three different geometries, namely, triangular, rectangular and semi-circular. Design/methodology/approach The finite element method-based numerical solver has been adopted to solve the governing transport equations. Findings A critical value of Reynolds number (Recri) is found beyond which, the average Nusselt number for the wavy or ribbed-wavy channel is more than that for a parallel plate channel and the value of Recri decreases with the increase in a number of ribs and for any given number of ribs, it is minimum for rectangular ribs. The performance factor (PF) sharply decreases with Reynolds number (Re) up to Re = 50 for all types of ribbed-wavy channels. For Re > 50, the change in PF with Re is gradual and decreases for all the ribbed cases and for the sinusoidal channel, it increases beyond Re = 100. The magnitude of PF strongly depends on the shape and number of ribs and Re. The relative magnitude of total entropy generation for different ribbed channels varies with Re and the number of ribs. Practical implications The findings of the present study are useful to design the economic heat exchanging devices. Originality/value The effects of shape and the number of ribs on the heat transfer performance and entropy generation have been investigated for the first time for the laminar flow regime. Also, the effects of shape and number of ribs on the flow and temperature fields and entropy generation have been investigated in detail.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of thermo-hydraulic and entropy generation characteristics for flow through ribbed-wavy channel

Mehta

Pati

Ahmed

et al. 2021

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“…Akbarzadeh et al 21 performed a numerical experiment on the partially porous sinusoidal channel and the results revealed that the porous slab thickness, Darcy number, and nanoparticle volume concentration significantly affect the heat transfer rate on the penalty of pressure drop. A similar study done by Bhowmick et al 22 and the effect of corrugation profile (triangular, sinusoidal, and trapezoidal) of partially porous channels on thermohydraulic characteristics at various Reynolds numbers has been investigated. The results display that the Nusselt number increases with Reynolds number and nanoparticle volume fraction.…”

Section: Introductionmentioning

confidence: 86%

Effect of porous slab thickness and Darcy number on thermohydraulic transport characteristics of Ag–TiO₂/water hybrid nanofluid flow‐through partially porous wavy channels

Kumar

Pandey

2022

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The present article investigates the effect of varying porous slab thicknesses (S = 0-0.4) and Darcy number (Da = 10 −6 -10 −2 ) on the thermohydraulic performance of three different corrugated channels (triangular, sinusoidal, and trapezoidal) embedded with partially filled porous media.Ag-TiO 2 /water hybrid nanofluid (ϕ = 0-0.04) is taken as coolant flowing at Re = 400. Results revealed that the thermal performance (average Nusselt number, Nu avg and enhancement ratio, ER) augments with the increase in porous slab thickness and decrease in Darcy number.However, the hydraulic performance reduces (i.e., an increase in pressure drop). To check the viability of the cooling system performance factor (PF) is evaluated which demonstrates variation in thermal performance considering pressure drop penalty also. It is demonstrated that among all configurations, the trapezoidal channel with porous slab thickness (S = 0.4) and Darcy number (Da = 10 −4 ) gives maximum enhancement thermal performance (110%) considering water as a coolant (ϕ = 0). Furthermore, enhancement in thermal performance by 210% is noticed as volume concentration ϕ of hybrid nanofluid varies from 0% to 4%. It is also evident that the value of PF for all corrugated channels is lower than 1 indicating

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“…In such cases, modest design improvements can be considered a viable option. Therefore, the provision of surface corrugations to a heat exchange system can be seen as a highly practicable option [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Mixed Convection in a Lid‐Driven Cavity with Triangular Corrugations and Built‐in Triangular Block

et al. 2022

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The influence of triangular surface corrugations on the mixed convection characteristics in a tall lid‐driven cavity for non‐Newtonian power‐law fluids is reported. In particular, numerical experimentations are executed for a range of parameters, such as aspect ratio of cavity, number of triangular corrugations, Richardson numbers, Prandtl numbers (Pr), power‐law indexes, and at a constant Grashof number. The corrugation number seems to be the maximum impact for higher Prandtl number fluids. For taller cavities, higher Nusselt number values were obtained for Pr = 100. Triangular corrugations showed a modest change in the heat transfer augmentation in most of the considered parameters.

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Implication of corrugation profile on thermo-hydraulic characteristics of Cu-water nanofluid flow through partially filled porous channel

Cited by 32 publications

References 40 publications

Analysis of thermo-hydraulic and entropy generation characteristics for flow through ribbed-wavy channel

Analysis of thermo-hydraulic and entropy generation characteristics for flow through ribbed-wavy channel

Effect of porous slab thickness and Darcy number on thermohydraulic transport characteristics of Ag–TiO₂/water hybrid nanofluid flow‐through partially porous wavy channels

Mixed Convection in a Lid‐Driven Cavity with Triangular Corrugations and Built‐in Triangular Block

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Implication of corrugation profile on thermo-hydraulic characteristics of Cu-water nanofluid flow through partially filled porous channel

Cited by 32 publications

References 40 publications

Analysis of thermo-hydraulic and entropy generation characteristics for flow through ribbed-wavy channel

Analysis of thermo-hydraulic and entropy generation characteristics for flow through ribbed-wavy channel

Effect of porous slab thickness and Darcy number on thermohydraulic transport characteristics of Ag–TiO2/water hybrid nanofluid flow‐through partially porous wavy channels

Mixed Convection in a Lid‐Driven Cavity with Triangular Corrugations and Built‐in Triangular Block

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Effect of porous slab thickness and Darcy number on thermohydraulic transport characteristics of Ag–TiO₂/water hybrid nanofluid flow‐through partially porous wavy channels