Journal ArticleDOI
Computational Study of Three-Dimensional Stagnation Point Nanofluid Bioconvection Flow on a Moving Surface With Anisotropic Slip and Thermal Jump Effect
TLDR
In this article, the effects of anisotropic slip and thermal jump on the three dimensional stagnation point flow of nanofluid containing microorganisms from a moving surface have been investigated numerically.Abstract:
The effects of anisotropic slip and thermal jump on the three dimensional stagnation point flow of nanofluid containing microorganisms from a moving surface have been investigated numerically. Anisotropic slip takes place on geometrically striated surfaces and superhydrophobic strips. Zero mass flux of nanoparticles at the surface is applied to achieve practically applicable results. Using appropriate similarity transformations, the transport equations are reduced to a system of nonlinear ordinary differential equations with coupled boundary conditions. Numerical solutions are reported by means of very efficient numerical method provided by the symbolic code Maple. The influences of the emerging parameters on the dimensionless velocity, temperature, nanoparticle volumetric fraction, density of motile micro-organisms profiles, as well as the local skin friction coefficient, the local Nusselt number and the local density of the motile microorganisms are displayed graphically and illustrated in detail. The computations demonstrate that the skin friction along the x-axis is enhanced with the velocity slip parameter along the y axis. The converse response is observed for the dimensionless skin friction along the y-axis. The heat transfer rate is increased with greater velocity slip effects but depressed with the thermal slip parameter. The local Nusselt number is increased with Prandtl number and decreased with the thermophoresis parameter. The local density for motile microorganisms is enhanced with velocity slip parameters and depressed with the bioconvection Lewis number, thermophoresis and Peclet number. Numerical results are validated where possible with published results and excellent correlation is achieved.read more
Citations
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Characteristics of Joule heating and viscous dissipation on three-dimensional flow of Oldroyd B nanofluid with thermal radiation
TL;DR: In this article, the authors explored the discussion on combined effects of Joule heating and viscous dissipation on a three-dimensional flow of Oldroyd B nanofluid.
Journal ArticleDOI
A numerical study of magnetohydrodynamic transport of nanofluids over a vertical stretching sheet with exponential temperature-dependent viscosity and buoyancy effects
TL;DR: In this article, a mathematical study is conducted of steady incompressible flow of a temperature-dependent viscous nanofluid from a vertical stretching sheet under applied external magnetic field and gravitational body force effects.
Journal ArticleDOI
Peristaltic pumping of magnetic nanofluids with thermal radiation and temperature-dependent viscosity effects: Modelling a solar magneto-biomimetic nanopump
TL;DR: In this paper, the authors present a model for simulating a biomimetic peristaltic solar magnetohydrodynamic nanofluid-based pump, where the working fluid is a magnetized nano-particle.
Journal ArticleDOI
Anisotropic Slip Magneto-Bioconvection Flow From A Rotating Cone To A Nanofluid With Stefan Blowing Effects
TL;DR: In this paper, a mathematical model for two dimensional steady laminar natural convective anisotropic slip boundary layer flows from a rotating vertical cone embedded in ethylene glycol bionanofluid is presented.
Journal ArticleDOI
Numerical study of slip effects on unsteady asymmetric bioconvective nanofluid flow in a porous microchannel with an expanding/contracting upper wall using buongiorno’s model
TL;DR: In this paper, the effects of velocity, temperature, nano-particle species (mass) and motile micro-organism slip effects are taken into account at the upper wall.
References
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Book
Boundary layer theory
TL;DR: The flow laws of the actual flows at high Reynolds numbers differ considerably from those of the laminar flows treated in the preceding part, denoted as turbulence as discussed by the authors, and the actual flow is very different from that of the Poiseuille flow.
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Convective Transport in Nanofluids
TL;DR: In this article, the authors considered seven slip mechanisms that can produce a relative velocity between the nanoparticles and the base fluid and concluded that only Brownian diffusion and thermophoresis are important slip mechanisms in nanofluids.
Journal ArticleDOI
Engineering flows in small devices
TL;DR: An overview of flows in microdevices with focus on electrokinetics, mixing and dispersion, and multiphase flows is provided, highlighting topics important for the description of the fluid dynamics: driving forces, geometry, and the chemical characteristics of surfaces.
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Natural convective boundary-layer flow of a nanofluid past a vertical plate
TL;DR: In this paper, the authors studied the natural convective boundary-layer flow of a nanofluid past a vertical plate and found that the reduced Nusselt number is a decreasing function of each of Nr, Nb and Nt.