Overall Heat Transfer Coefficient for a Multi-Tube Rotating Condenser

Morsy, Mahmoud G.; Wassef, F. M.; Morcos, V.H.; Biblawy, H.A.M. El

doi:10.1080/00986448708960474

Cited by 3 publications

(2 citation statements)

References 9 publications

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“…The formation and structure of the boundary layers in these systems close to the body's periphery are significantly influenced by rotation. Thus, they regulate the rates of heat and mass transfer in laminar, transitional, and fully turbulent flows [18]. Conical, elliptical, disk-shaped, spherical, eccentric, and concentric systems are just a few of the possible shapes for the bodies.…”

Section: Introductionmentioning

confidence: 99%

Neural network method for quadratic radiation and quadratic convection unsteady flow of Sutterby nanofluid past a rotating sphere

Bijiga

Gamachu

2023

SN Appl. Sci.

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In this study, the heat relocation properties of quadratic thermal radiation and quadratic convective unsteady stagnation point flow of electro-magnetic Sutterby nanofluid past a spinning sphere under zero mass flux and convective heating conditions are investigated. The governing equations are developed and expressed as partial differential equations, which are afterwards transformed into ordinary differential equations by applying similarity conversion. In the investigation, the JAX library in Python is employed with the numerical approach to artificial neural networks. It is investigated to what extent physical characteristics affect primary and secondary velocity, temperature, and concentration fields. The results demonstrate that due to increasing unsteadiness, Sutterby fluid, and magnetic field parameters, the flow of Sutterby nanofluid in the flow zone accelerates in the primary (x-direction) and slows down in the rotational (z-direction). The outcome also shows that an increase in the quadratic radiation parameter, the magnetic field constraint, and the electric field constraint induce increases in the temperature distribution of the Sutterby nanofluid. The study also shows that the concentration of nanoparticles decreases with increasing Lewis numbers and unsteadiness parameter values. Additionally, a graph illustrating the mean square error is investigated and provided.

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Section: Introductionmentioning

confidence: 99%

Neural network method for quadratic radiation and quadratic convection unsteady flow of Sutterby nanofluid past a rotating sphere

Bijiga

Gamachu

2023

SN Appl. Sci.

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“…In such systems the rotation strongly influences boundary layer growth and structure on the body periphery. This in turn controls heat and mass transfer rates whether flows are laminar, transitional, or indeed fully turbulent [29]. The bodies may be conical, spherical, elliptical, disk-shaped, and indeed concentric and eccentric systems.…”

Section: Introductionmentioning

confidence: 99%

Homotopy Simulation of Nonlinear Unsteady Rotating Nanofluid Flow from a Spinning Body

Bég¹,

Mabood

Islam

2015

International Journal of Engineering Mathematics

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The development of new applications of nanofluids in chemical engineering and other technologies has stimulated significant interest in computational simulations. Motivated by coating applications of nanomaterials, we investigate the transient nanofluid flow from a time-dependent spinning sphere using laminar boundary layer theory. The free stream velocity varies continuously with time. The unsteady conservations equations are normalized with appropriate similarity transformations and rendered into a ninth-order system of nonlinear coupled, multidegree ordinary differential equations. The transformed nonlinear boundary value problem is solved using the homotopy analysis method (HAM), a semicomputational procedure achieving fast convergence. Computations are verified with an Adomian decomposition method (ADM). The influence of acceleration parameter, rotational body force parameter, Brownian motion number, thermophoresis number, Lewis number, and Prandtl number on surface shear stress, heat, and mass (nanoparticle volume fraction) transfer rates is evaluated. The influence on boundary layer behavior is also investigated. HAM demonstrates excellent stability and leads to highly accurate solutions.

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Nonlinear convection unsteady flow of electro-magnetohydrodynamic Sutterby hybrid nanofluid in the stagnation zone of a spinning sphere

2023

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Overall Heat Transfer Coefficient for a Multi-Tube Rotating Condenser

Cited by 3 publications

References 9 publications

Neural network method for quadratic radiation and quadratic convection unsteady flow of Sutterby nanofluid past a rotating sphere

Neural network method for quadratic radiation and quadratic convection unsteady flow of Sutterby nanofluid past a rotating sphere

Homotopy Simulation of Nonlinear Unsteady Rotating Nanofluid Flow from a Spinning Body

Nonlinear convection unsteady flow of electro-magnetohydrodynamic Sutterby hybrid nanofluid in the stagnation zone of a spinning sphere

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