ATSS model based upon applications of Cattaneo-Christov thermal analysis for entropy optimized ternary nanomaterial flow with homogeneous-heterogeneous chemical reactions

Razaq, Aneeta; Hayat, Tasawar; Khan, Sohail A.; Momani, Shaher

doi:10.1016/j.aej.2023.08.013

Cited by 47 publications

(10 citation statements)

References 64 publications

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“…Due to its importance, many papers can be found in the engineering literature about experimentally measuring or computing K (see for instance [2][3][4][5][6]). We also refer the reader to interesting recent results on thermal flows and their numerical modelling provided in [7][8][9][10][11][12].…”

Section: ∂U ∂Nmentioning

confidence: 99%

The Robin boundary condition for modelling heat transfer

Marušić-Paloka,

Pažanin

2024

Proc. R. Soc. A.

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The heat exchange between a rigid body and a fluid is usually modelled by the Robin boundary condition saying that the heat flux through the interface is proportional to the difference between their temperatures. Such interface law describes only the unilateral heat exchange. The goal of this paper is to compare the Robin boundary condition starting with the transmission condition (the temperature and the flux continuity) using rigorous mathematical analysis. Our main results are the following. We first show that a generalized version of the Robin boundary condition can be justified. Second, we prove that replacing the generalized by the standard Robin condition can be justified for high convection velocity if the conductivity of the surrounding liquid is much lower than that of the body. On the other hand, if the fluid conducts much better than the body, then the effective boundary condition is shown not to be the Robin one, but it involves second-order derivatives. We strongly believe that those findings bring new insights to the physics of the heat exchange processes and, thus, could prove useful in engineering practice.

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Section: ∂U ∂Nmentioning

confidence: 99%

The Robin boundary condition for modelling heat transfer

Marušić-Paloka,

Pažanin

2024

Proc. R. Soc. A.

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“…Under these circumstances, the dimensional form entropy is provided in ref. 39–41.Here, the first to fifth terms on the right hand side of eqn (37) are the entropy generation due to heat transfer, viscous dissipation, Joule heating (magnetic field), porosity factor, and concentration of the X̂ and Ŷ species, respectively.…”

Section: Modelling and Mathematical Formulationmentioning

confidence: 99%

Entropy production with the flow of nanomaterials through the permeable stretched surface with heterogeneous–homogenous chemical reaction

Hashim,

Rehman,

Alshammari

et al. 2023

Nanoscale Adv.

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“…This is done by evaluating entropy generation rate and optimizing it. 56,57 Finally, we optimize the design of the tapered DL-MCHS using various fluids by employing both the first law and the second law of thermodynamics methodologies. We show that the use of a shear-thinning fluid enhances the thermal and hydraulic performance both simultaneously.…”

Section: Introductionmentioning

confidence: 99%

Modulating fluid rheology and confinement toward augmenting the performance of a double layered microchannel heat sink

Kumar,

Das,

Bakli

2024

Heat Trans

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The improvement of the cooling performance of liquid‐cooled microchannel heat sinks used for densely packed electronic circuits is sorted via passive techniques like tuning substrate or coolant properties. We propose a design for enhancing heat sink performance by simulataneously modifying the channel geometry and tuning the fluid rheology. By modeling the coolant as a power law fluid, its rheological behavior is varied ranging from shear‐thinning to shear‐thickening, alongside Newtonian fluid. We introduced tapering to the middle wall that separates the bottom and top channels of a double layered microchannel heat sink (DL‐MCHS), causing both channels to converge. This convergence not only increases the flow velocity within the downstream microchannel but also reduces the apparent viscosity of the shear‐thinning fluid being subjected to shear, resulting in enhanced thermal and hydraulic performance. We analyze the results from both the first and the second law of thermodynamics context, demonstrating that a tapered DL‐MCHS with shear‐thinning fluid outperforms a straight partition wall DL‐MCHS with Newtonian coolant. However, we also discovered that extreme tapering compromises thermodynamic viability, but by fine‐tuning the extent of tapering, we inferred that a DL‐MCHS with shear‐thinning fluid can become viable with little compromise in the thermal performance.

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ATSS model based upon applications of Cattaneo-Christov thermal analysis for entropy optimized ternary nanomaterial flow with homogeneous-heterogeneous chemical reactions

Cited by 47 publications

References 64 publications

The Robin boundary condition for modelling heat transfer

The Robin boundary condition for modelling heat transfer

Entropy production with the flow of nanomaterials through the permeable stretched surface with heterogeneous–homogenous chemical reaction

Modulating fluid rheology and confinement toward augmenting the performance of a double layered microchannel heat sink

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