Experimental and numerical analysis of heat transfer enhancement and flow characteristics in grooved channel for pulsatile flow

Zhang, Fengge; Bian, Yongning; Liu, Yang; Pan, Junxiu; Yang, Yunjie; Arima, Hirofumi

doi:10.1016/j.ijheatmasstransfer.2019.06.100

Cited by 17 publications

(6 citation statements)

References 25 publications

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“…The asymmetric flows showed intense fluid mixing with a rapid shift in flow velocity and corresponding pressure gradients led to an enhancement of up to 28% over steady. New works have also focussed on modifying the channel geometries such as by implementing grooved wall [33,34], sinusoidal wavy walls [35,36] or by incorporating surface roughness [37] to achieve promising heat transfer enhancement using pulsating flows. The introduction of recirculation zones and flow separation effectively disrupts the thermal boundary to enhance the mass momentum and thermal diffusion between wall and core, although with a sharp escalation in pressure gradient.…”

Section: Heat Transfer Associated With Flow Pulsationsmentioning

confidence: 99%

A computational conjugate heat transfer study of a rectangular minichannel undergoing sinusoidal flow pulsations

Kumavat

Alimohammadi

O’Shaughnessy

2022

International Journal of Thermal Sciences

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Section: Heat Transfer Associated With Flow Pulsationsmentioning

confidence: 99%

A computational conjugate heat transfer study of a rectangular minichannel undergoing sinusoidal flow pulsations

Kumavat

Alimohammadi

O’Shaughnessy

2022

International Journal of Thermal Sciences

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“…In the upper and lower grooves, streamlines, temperature, and vorticity were not symmetrical. Zhang et al 5 tried to understand numerically and experimentally the characteristics of flow and convective heat transfer for pulsatile flow at grooved channels. The pulsatile flow was focused on the amplitude of flow oscillation at different Reynolds number.…”

Section: Introductionmentioning

confidence: 99%

LBM curved boundary treatments for pulsatile flow on convective heat transfer and friction factor in corrugated channels

Aslan,

Ozsaban,

Kucur

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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The present research investigates heat transfer and the flow characteristics of periodically corrugated wavy channels numerically under pulsatile flow conditions. The numerical method used here is Lattice Boltzmann Method (LBM), and the validation of the study is done by Ansys-Fluent which is finite volume based commercial Computational Fluid Dynamics (CFD) code. For modeling walls, bounce-back method, namely, staircase method and three different curved boundary treatments, which are extrapolation, Filippova-Hänel (FH) and Mei-Luo-Shy (MLS), are used. For modeling constant temperature at walls, staircase method and the same curved wall treatments are used. Corrugated channels have a sharp wavy peak, and its inclination angle is 30°. Two different minimum channel heights are considered, which are 5 and 10 mm in corrugated channels. Flow regime is assumed as laminar (50 < Re < 300) and Prandtl number is kept as 0.7. Four kinds of different sinusoidal pulsatile flows are used with a combination of two different dimensionless frequencies and dimensionless amplitudes. For varying Reynolds number range, Nusselt number and friction factor are calculated. Narrow channel creates higher Nusselt number and friction factor than wide channel. At low Reynolds number, Nusselt number does not changed with pulsatile flow conditions, however at high Reynolds number cases of lower dimensionless frequency and higher dimensionless amplitude produce higher Nusselt numbers. Lower dimensionless frequency cases produce higher Nusselt number than higher dimensionless frequency cases. Pulsatile flow conditions have no effect on friction factor and for narrow and wide channel. Nusselt number prediction of FVM is close to STR and EXT for all cases of narrow channels, and close to the FH, MLS and EXT for all cases wide channel. Correlation equations for Nusselt number and friction factor are constructed by deep neural network (DNN) algorithm.

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“…Srinivas et al 34 analytically investigated the impacts of Joule heating, radiative heat and applied magnetic field on the chemically reacting non-Newtonian pulsating fluid flow in a penetrable channel by utilizing the perturbation method. Investigational and numerical inspection of flow characteristics with energy transfer in a channel for pulsating flow was done by Zhang et al 35 . Vasu et al 36 made a novel model of pulsating micropolar flow of blood carrying nanoparticles in a stenosed narrowing blood vessel for a drug delivery application of non-Newtonian pharmacodynamic simulation.…”

Section: Introductionmentioning

confidence: 99%

Impacts of Joule heating and viscous dissipation on MHD pulsatile flow of third grade nanofluid in a channel

Govindarajulu

Reddy

2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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The current exploration deals with the third grade hydromagnetic pulsating flow of blood-gold nanofluid in a channel with the presence of Ohmic heating, viscous dissipation and radiative heat. In the present analysis, blood (base fluid) is considered as third-grade fluid and gold (Au) as nanoparticle. This investigation is useful in the fields of food processing system, pressure surges (pulsatile flow application), biomedical engineering, nano drug delivery, radiotherapy, and cancer therapeutic (nanofluid application). Perturbation method is employed to transform the set of governing partial differential equations (PDEs) into the ordinary differential equations (ODEs) and then solved by employing the fourth order Runge-Kutta method with the aid of the shooting technique. The impacts of emerging dimensionless parameters of velocity, temperature, and heat transfer rate of blood-Au nanofluid are analysed via pictorial outcomes in detail. The obtained results depict that the improvement in viscous dissipation and heat source enhanced the temperature of third grade nanofluid. The velocity and temperature of the nanofluid are declining functions with the enhancement of frequency parameter, material parameter, and non-Newtonian parameter respectively. Intensifying the volume fraction of nanoparticle dwindles the velocity and temperature of nanofluid. Enhancing volume fraction and viscous dissipation accelerates the heat transfer rate of nanofluid. The velocity, temperature, and heat transfer rates are decreased by an escalation of the Hartmann number. Further, enhancing the radiation parameter reduces the heat transfer rate and temperature of nanofluid.

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Experimental and numerical analysis of heat transfer enhancement and flow characteristics in grooved channel for pulsatile flow

Cited by 17 publications

References 25 publications

A computational conjugate heat transfer study of a rectangular minichannel undergoing sinusoidal flow pulsations

A computational conjugate heat transfer study of a rectangular minichannel undergoing sinusoidal flow pulsations

LBM curved boundary treatments for pulsatile flow on convective heat transfer and friction factor in corrugated channels

Impacts of Joule heating and viscous dissipation on MHD pulsatile flow of third grade nanofluid in a channel

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