Analysis of homogeneous steady state nanofluid surrounding cylindrical solid pipes

Rashed, A. S.; Mahmoud, Tarek A.; Kassem, M.

doi:10.21608/eijest.2020.38518.1003

Cited by 8 publications

(5 citation statements)

References 36 publications

(40 reference statements)

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“…The independent variables (x, y, z, and t) have been combined into a single similarity variable using Equation (36). Utilizing the identical processes outlined in references [42][43][44][45][46][47][48], the variables are supplied by the following:…”

Section: The Full Transformation Of System's Variablesmentioning

confidence: 99%

Influence of Gyrotactic Microorganisms on Bioconvection in Electromagnetohydrodynamic Hybrid Nanofluid through a Permeable Sheet

Rashed,

Nasr,

Mabrouk

2024

Computation

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Many biotechnology sectors that depend on fluids and their physical characteristics, including the phenomenon of bioconvection, have generated a great deal of discussion. The term “bioconvection” describes the organized movement of microorganisms, such as bacteria or algae. Microorganisms that participate in bioconvection display directed movement, frequently in the form of upward or downward streaming, which can lead to the production of distinctive patterns. The interaction between the microbes’ swimming behavior and the physical forces acting on them, such as buoyancy and fluid flow, is what drives these patterns. This work considers the laminar-mixed convection incompressible flow at the stagnation point with viscous and gyrotactic microorganisms in an unsteady electrically conducting hybrid nanofluid (Fe3O4-Cu/water). In addition, hybrid nanofluid flow over a horizontal porous stretched sheet, as well as external and induced magnetic field effects, can be used in biological domains, including drug delivery and microcirculatory system flow dynamics. The governing system has been reduced to a set of ordinary differential equations (ODEs) through the use of the group technique. The current research was inspired by an examination of the impacts of multiple parameters, including Prandtl number, , magnetic diffusivity, , shape factor, microorganism diffusion coefficient, , Brownian motion coefficient, , thermophoresis diffusion coefficient, , bioconvection Peclet number, , temperature difference, , and concentration difference, . The results show that as rises, temperature, heat flux, and nanoparticles all decrease. In contrast, when the value increases, the magnetic field and velocity decrease. Heat flow, bacterial density, and temperature decrease as the value rises, yet the number of nanoparticles increases. As the value increases, the temperature, heat flow, and concentration of nanoparticles all rise while the density of bacteria decreases. Even though temperature, heat flux, nanoparticles, and bacterial density all decrease as values climb, bacterial density rises as values do although bacterial density falls with increasing, and values; on the other hand, when n values increase, temperature and heat flow increase but the density of bacteria and nanoparticle decrease. The physical importance and behavior of the present parameters were illustrated graphically.

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Section: The Full Transformation Of System's Variablesmentioning

confidence: 99%

Influence of Gyrotactic Microorganisms on Bioconvection in Electromagnetohydrodynamic Hybrid Nanofluid through a Permeable Sheet

Rashed,

Nasr,

Mabrouk

2024

Computation

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“…There are numerous efficient techniques that have been created and put to use for thinking about nonlinear differential equation systems' reductions and solutions. These techniques include Hirota's bilinear method [24,34], the nonlocal potential transformation method [26], the singular manifold method [22,23], the exponential function method [24,25], the nonlocal potential transformation method [26], the Lie symmetry analysis technique [27,33], and group transformation methods [35][36][37][38][39][40]. The analysis and solution of the bioconvection hybrid nanofluid system in (3+1) dimensions serves as the driving force behind this effort.…”

Section: Introductionmentioning

confidence: 99%

Bioconvection of unsteady nonhomogeneous hybrid nanofluids influenced by motile microorganisms

Mabrouk

İnç

Rashed

et al. 2023

Preprint

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Motile bacteria in hybrid nanofluids cause bioconvection. Bacillus cereus, Pseudomonas viscose, Bacillus brevis, Salmonella typhimurium, and Pseudomonas fluorescens were used to evaluate their effect and dispersion in the hybrid nanofluid. Using hybrid Al2O3 and Cu nanoparticles (Cu-Al2O3/water), a two-phase model for mixed bioconvection magnetohydrodynamic flow was created using similarity analysis. M, Pr, and k_p* all affect the sensitivity of velocity and shear stresses. Magnetic, radiation and chemotaxis factors impact bacterial density. Increasing temperature differential and bacterium diffusivity increase bacterial aggregation.

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“…Using the shooting technique, they found that whenever nanoparticles combined with base fluid, the rate of heat transmission increased noticeably. Using group transformations, Rashed et al [42] investigated the continuous nanofluid flow via cylindrical tubes. Because of their greater thermal conductivity, they discovered that silver nanoparticles produced the highest thermal values.…”

Section: Introductionmentioning

confidence: 99%

Biomagnetic Fluid Flow on a Nonlinearly Stretching Sheet with Variable Thickness in a Magnetic Environment

Murtaza,

Misra,

Tzirtzilakis

et al. 2023

J. Adv. App. Comput. Math.

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The main contribution of the current work is a numerical and mathematical investigation of the effects of magnetic dipole and electrical conductivity on the heat and flow transfer of biomagnetic fluid over a non-linear stretched sheet with variable thickness. Static magnetic fields are produced by magnetic dipoles, which are used in medical a pplications such as MRI, drug administration, and cancer therapy. Additionally, the impact of non-linear heat source/sink features was examined in the study, leading to an interesting phenomenon. The PDEs are attenuated to nonlinear ODEs with dealing appropriate similarity variables. These resultant ODEs are computed by developing an effective method emerged on the application of the finite differences technique. In the end, this section offers a summary of the implications resulting from different physical limitations on blood flow, including variable thickness and power index effects. It was discovered that the rise in Kelvin and Lorentz forces in the boundary layer significantly affected blood flow. The current findings for the biomagnetic fluid model are novel and inventive since they effectively expand upon the issues previously addressed by previously published scientific documentation.

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Analysis of homogeneous steady state nanofluid surrounding cylindrical solid pipes

Cited by 8 publications

References 36 publications

Influence of Gyrotactic Microorganisms on Bioconvection in Electromagnetohydrodynamic Hybrid Nanofluid through a Permeable Sheet

Influence of Gyrotactic Microorganisms on Bioconvection in Electromagnetohydrodynamic Hybrid Nanofluid through a Permeable Sheet

Bioconvection of unsteady nonhomogeneous hybrid nanofluids influenced by motile microorganisms

Biomagnetic Fluid Flow on a Nonlinearly Stretching Sheet with Variable Thickness in a Magnetic Environment

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