Transient Combined Convective Heat Transfer over a Stretching Surface in a Non-Newtonian Nanofluid Using Buongiorno’s Model

Gorla, Rama Subba Reddy; Vasu, B.; Siddiqa, Sadia

doi:10.4236/jamp.2016.42050

Cited by 6 publications

(3 citation statements)

References 29 publications

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“…Using the Homotopy semi-numerical modeling method for non-Newtonian nanofluid external to three different geometries with variable wall temperature and nanoparticle concentration condition, Buongiorno model was used by Ray et al 84 Considering the effects of Brownian motion and thermophoresis, Vasu et al 85 conducted an entropy analysis in steady laminar thin film convection flow of a power-law fluid with nanoparticles using Buongiorno's model. Gorla et al 86 investigated the mixed convective boundary layer flow adjacent to a vertical stretching surface using the Buongiorno model for non-Newtonian nanofluid in unsteady condition. Furthermore, Gorla and Vasu 87 examined the unsteady forced convective boundary boundary layer flow over a stretching sheet with the non-Newtonian nanofluid using the Buongiorno model.…”

Section: Single-phase Approachesmentioning

confidence: 99%

Blood Flow Mediated Hybrid Nanoparticles in Human Arterial System: Recent Research, Development and Applications

et al. 2021

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Blood flow dynamics contributes an elemental part in the formation and expansion of cardiovascular diseases in human body. Computational simulation of blood flow in the human arterial system has been widely used in recent decades for better understanding the symptomatic spectrum of various diseases, in order to improve already existing or develop new therapeutic techniques. The characteristics of the blood flow in an artery can be changed significantly by arterial diseases, such as aneurysms and stenoses. The progress of atherosclerosis or stenosis in a blood vessel is quite common which may be caused due to the addition of lipids in the arterial wall. Nanofluid is a colloidal mixture of nanometer sized (which ranges from 10–100 m) metallic and non-metallic particles in conventional fluid (such as water, oil). The delivery of nanoparticles is an interesting and growing field in the development of diagnostics and remedies for blood flow complications. An enhancement of nano-drug delivery performance in biological systems, nanoparticles properties such as size, shape and surface characteristics can be regulated. Nanoparticle offers remarkably advantages over the traditional drug delivery in terms of high specificity, high stability, high drug carrying capacity, ability for controlled release. Highly dependency has been found for their behavior under blood flow while checking for their ability to target and penetrate tissues from the blood. In the field of nano-medicine, organic (including polymeric micelles and vesicles, liposomes) and inorganic (gold and mesoporous silica, copper) nanoparticles have been broadly studied as particular carriers because as drug delivery systems they delivered a surprising achievement as a result of their biocompatibility with tissue and cells, their subcellular size, decreased toxicity and sustained release properties. For the extension of nanofluids research, the researchers have also tried to use hybrid nanofluid recently, which is synthesized by suspending dissimilar nanoparticles either in mixture or composite form. The main idea behind using the hybrid nanofluid is to further improve the heat transfer and pressure drop characteristics. Nanoparticles are helpful as drug carriers to minimize the effects of resistance impedance to blood flow or coagulation factors due to stenosis. Discussed various robust approaches have been employed for the nanoparticle transport through blood in arterial system. The main objective of the paper is to provide a comprehensive review of computational simulations of blood flow containing hybrid-nanoparticles as drug carriers in the arterial system of the human body. The recent developments and analysis of convective flow of particle-fluid suspension models for the axi-symmetric arterial bodies in hemodynamics are summarized. Detailed existing mathematical models for simulating blood flow with nanoparticles in stenotic regions are reviewed. The review focuses on selected numerical simulations of physiological convective flows under various stenosis approximations and computation of the temperature, velocity, resistance impedance to flow, wall shear stress and the pressure gradient with the corresponding boundary conditions. The current review also highlights that the drug carrier nanoparticles are efficient mechanisms for reducing hemodynamics of stenosis and could be helpful for other biomedical applications. The review considers flows through various stenoses and the significances of numerical fluid mechanics in clinical medicine. The review examines nano-drug delivery systems, nanoparticles and describes recent computational simulations of nano-pharmacodynamics.

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Section: Single-phase Approachesmentioning

confidence: 99%

Blood Flow Mediated Hybrid Nanoparticles in Human Arterial System: Recent Research, Development and Applications

et al. 2021

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“…These include magnetic boundary layers (Chiam [2]), wavy thermal boundary layers [Rees and Pop [3]], rotating hydro-magnetic convection (Hossain et al [4]), thermal convection in porous regimes (Rees and Hossain [5]), magneto-viscoelastic heat transfer in porous media (Bég et al [6]), radiation-convection viscoelastic boundary layers (Bég et al [7]), hydro-magnetic convection from an elastic cylinder (Ishak et al [8]) and hydro-magnetic thermophoretic mixed convection in porous media (Damseh et al [9]), heat and mass transfer in micropolar regime (Bég et al [10]), radiative-convective porous media flows (Prasad et al [11]). Recently, Gorla and Vasu [12] and Gorla et al [13] have studied an unsteady convective heat transfer in a non-Newtonian nanofluid.…”

Section: Introductionmentioning

confidence: 99%

MHD Free Convection-Radiation Interaction in a Porous Medium - Part I: Numerical Investigation

Vasu

Gorla

Murthy

et al. 2020

International Journal of Applied Mechanics and Engineering

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A numerical investigation of two dimensional steady magnetohydrodynamics heat and mass transfer by laminar free convection from a radiative horizontal circular cylinder in a non-Darcy porous medium is presented by taking into account the Soret/Dufour effects. The boundary layer conservation equations, which are parabolic in nature, are normalized into non-similar form and then solved numerically with the well-tested, efficient, implicit, stable Keller–Box finite-difference scheme. We use simple central difference derivatives and averages at the mid points of net rectangles to get finite difference equations with a second order truncation error. We have conducted a grid sensitivity and time calculation of the solution execution. Numerical results are obtained for the velocity, temperature and concentration distributions, as well as the local skin friction, Nusselt number and Sherwood number for several values of the parameters. The dependency of the thermophysical properties has been discussed on the parameters and shown graphically. The Darcy number accelerates the flow due to a corresponding rise in permeability of the regime and concomitant decrease in Darcian impedance. A comparative study between the previously published and present results in a limiting sense is found in an excellent agreement.

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“…The study on the flow of non-Newtonian fluids over a plate has attracted attention of many researchers [9][10][11][12][13]. Stokes' first and second problems are one of those types of flows.…”

Section: Introductionmentioning

confidence: 99%

Homotopy Simulation of Non-Newtonian Spriggs Fluid Flow Over a Flat Plate with Oscillating Motion

Ray

Vasu

Gorla

2019

International Journal of Applied Mechanics and Engineering

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An incompressible flow of a non-Newtonian Spriggs fluid over an unsteady oscillating plate is investigated using the Homotopy Analysis Method (HAM). An analytic solution of sine and cosine oscillations of the plate has been obtained. The similarity transformation is introduced to reduce the governing partial differential equations into a single non-linear dimensionless partial differential equation. The effects of the power index of Spriggs fluid and convergence control parameter of HAM for the flow are studied extensively. The range of the convergence control parameter for convergence of series solution for different values of the power index of Spriggs fluid is obtained. The solution for a Spriggs fluid is noticeably different from the solution obtained for a Newtonian fluid. The influences of the shear thinning and shear thickening fluid on the velocity profile are shown graphically. The transient flow effect is higher for non-Newtonian Spriggs fluid than that of a Newtonian fluid. It is also observed that the interval to reach the steady state for the cosine case is less than the sine case. The applications of Stokes’ second problem have been widely found in the variety of fields of biomedical, medical, chemical, micro and nanotechnology.

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Transient Combined Convective Heat Transfer over a Stretching Surface in a Non-Newtonian Nanofluid Using Buongiorno’s Model

Cited by 6 publications

References 29 publications

Blood Flow Mediated Hybrid Nanoparticles in Human Arterial System: Recent Research, Development and Applications

Blood Flow Mediated Hybrid Nanoparticles in Human Arterial System: Recent Research, Development and Applications

MHD Free Convection-Radiation Interaction in a Porous Medium - Part I: Numerical Investigation

Homotopy Simulation of Non-Newtonian Spriggs Fluid Flow Over a Flat Plate with Oscillating Motion

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