Solutal effects on thermal sensitivity of casson nanofluids with comparative investigations on Newtonian (water) and non-Newtonian (blood) base liquids

Sharma, Jyoti; Ahammad, N. Ameer; Wakif, Abderrahim; Chung, Jae Dong; Weera, Wajaree

doi:10.1016/j.aej.2023.03.062

Alexandria Engineering Journal

2023

DOI: 10.1016/j.aej.2023.03.062

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Solutal effects on thermal sensitivity of casson nanofluids with comparative investigations on Newtonian (water) and non-Newtonian (blood) base liquids

Jyoti Sharma¹,

N. Ameer Ahammad²,

Abderrahim Wakif³

et al.

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Cited by 32 publications

(1 citation statement)

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“…It consists of two source terms: a viscous linear term (Darcy term, in which the permeability of the medium has to be specified) and a non-linear form drag (Forchheimer term). Examples, in which the porous media approach has been adopted to derive analytical or powerful numerical solutions, can be found in recent refs (Bhatti and Powell, 2023;Bhatti and Öztop, 2022;Wakif et al, 2022;Rasool et al, 2023;Elboughdiri et al, 2023a;Sharma et al, 2023;Zhang et al, 2023;Elboughdiri et al, 2023b), thus demonstrating the importance of porous media in multiphysics problems such as nano fluids, biodynamics and heat/mass transfer applications. Such a model can only be applied when frequency tends to zero, as the oscillating inertial contributions to the flow can be neglected.…”

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confidence: 99%

Analysis of non-linear losses in a parallel plate thermoacoustic stack

Di Meglio,

Massarotti,

Rolland

et al. 2023

HFF

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Purpose This study aims to analyse the non-linear losses of a porous media (stack) composed by parallel plates and inserted in a resonator tube in oscillatory flows by proposing numerical correlations between pressure gradient and velocity. Design/methodology/approach The numerical correlations origin from computational fluid dynamics simulations, conducted at the microscopic scale, in which three fluid channels representing the porous media are taken into account. More specifically, for a specific frequency and stack porosity, the oscillating pressure input is varied, and the velocity and the pressure-drop are post-processed in the frequency domain (Fast Fourier Transform analysis). Findings It emerges that the viscous component of pressure drop follows a quadratic trend with respect to velocity inside the stack, while the inertial component is linear also at high-velocity regimes. Furthermore, the non-linear coefficient b of the correlation ax + bx2 (related to the Forchheimer coefficient) is discovered to be dependent on frequency. The largest value of the b is found at low frequencies as the fluid particle displacement is comparable to the stack length. Furthermore, the lower the porosity the higher the Forchheimer term because the velocity gradients at the stack geometrical discontinuities are more pronounced. Originality/value The main novelty of this work is that, for the first time, non-linear losses of a parallel plate stack are investigated from a macroscopic point of view and summarised into a non-linear correlation, similar to the steady-state and well-known Darcy–Forchheimer law. The main difference is that it considers the frequency dependence of both Darcy and Forchheimer terms. The results can be used to enhance the analysis and design of thermoacoustic devices, which use the kind of stacks studied in the present work.

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confidence: 99%

Analysis of non-linear losses in a parallel plate thermoacoustic stack

Di Meglio,

Massarotti,

Rolland

et al. 2023

HFF

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Fractional analysis of unsteady radiative brinkman-type nanofluid flow comprised of CoFe2O3 nanoparticles across a vertical plate

Bilal,

Ali,

Mahmoud

et al. 2023

J Therm Anal Calorim

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Linear variations in conductivity and viscosity as particles’ basic profile for convective instability in nanofluids under various boundary conditions

Sharma

2024

Meccanica

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Solutal effects on thermal sensitivity of casson nanofluids with comparative investigations on Newtonian (water) and non-Newtonian (blood) base liquids

Cited by 32 publications

References 58 publications

Analysis of non-linear losses in a parallel plate thermoacoustic stack

Analysis of non-linear losses in a parallel plate thermoacoustic stack

Fractional analysis of unsteady radiative brinkman-type nanofluid flow comprised of CoFe2O3 nanoparticles across a vertical plate

Linear variations in conductivity and viscosity as particles’ basic profile for convective instability in nanofluids under various boundary conditions

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