Safia Akram

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Dr. Safia Akram received her Ph.D degree in Mathematics from Quaid-I-Azam University Islamabad in year 2011. She joined MCS-NUST in 2009 and is serving as a Faculty member in Dept Humanities and Basic Sciences (H

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Umm Al-Qura University, Makkah, Saudi Arabia

asha kotnurkar

dharmendra tripathi

National Institute of Technology, Uttarakhand

Osmania University

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Papers by Safia Akram

The Role of Double-Diffusion Convection and Induced Magnetic Field on Peristaltic Pumping of a Johnson–Segalman Nanofluid in a Non-Uniform Channel

Nanomaterials, Mar 23, 2022

This article is an open access article distributed under the terms and conditions of the Creative... more

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On Stokes' Second Problem for Burgers' Fluid over a Plane Wall

Applied and Computational Mechanics, Jul 1, 2021

The Stokes' second problem for a Burgers' fluid over a plane wall is considered in this paper. Th... more The Stokes' second problem for a Burgers' fluid over a plane wall is considered in this paper. The motion of the fluid is induced by the oscillation of the plane wall between two side walls perpendicular to the plane wall. The exact analytical solutions for the velocity field and the adequate shear stress are established in simple forms by means of integral transforms. The solutions that have been obtained, presented as a sum of the steady and the transient solutions, satisfy all imposed initial and boundary conditions. In the absence of the side walls they reduce to the similar solutions over an infinite plate. Finally, the results for the velocity, as well as a comparison between models, are displayed graphically for pertinent parameters to show interesting aspects of the solutions. It is observed that the velocity and the boundary layer thickness were observed to be decreased in the presence of the side walls. Moreover, the Maxwell fluid was observed to be the speediest and the Newtonian was the slowest.

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Effect of the Variable Viscosity on the Peristaltic Flow of Newtonian Fluid Coated withMagnetic Field: Application of Adomian Decomposition Method for Endoscope

Coatings, Aug 16, 2019

In the present analysis, peristaltic flow was discussed for MHD Newtonian fluid through the gap b... more In the present analysis, peristaltic flow was discussed for MHD Newtonian fluid through the gap between two coaxial tubes, where the viscosity of the fluid is treated as variable. In addition, the inner tube was considered to be at rest, while the outer tube had the sinusoidal wave traveling down its motion. Further, the assumptions of long wave length and low Reynolds number were taken into account for the formulation of the problem. A closed form solution is presented for general viscosity using the Adomian decomposition method. Numerical illustrations that show the physical effects and pertinent features were investigated for different physical included phenomenon. It was found that the pressure rise increases with an increase in Hartmann number, and frictional forces for the outer and inner tube decrease with an increase in Hartmann number when the viscosity is constant. It was also observed that the size of the trapping bolus decreases with an increase in Hartmann number, and increases with an increase in amplitude ratio when the viscosity is parameter.

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Influence of inclined magnetic field on peristaltic flow of a Jeffrey fluid with heat and mass transfer in an inclined symmetric or asymmetric channel

Asia-Pacific Journal of Chemical Engineering, Jul 22, 2010

In this article, we have investigated the peristaltic flow of a Jeffrey fluid with heat and mass ... more In this article, we have investigated the peristaltic flow of a Jeffrey fluid with heat and mass transfer under the influence of inclined magnetic field in an inclined symmetric or asymmetric channel. The dissipation term in the energy equation is also taken into account. The governing equations are transformed from moving to fixed frame of reference and the resulting equations have then been simplified using the assumptions of long wavelength and low but finite Reynolds number approximation. The reduced equations have been solved numerically by Adomian decomposition method and the exact solutions have also been computed for stream function, temperature and concentration. The expression for pressure rise is computed numerically. Lastly, the physical features of various parameters have been discussed through graphs. Copyright © 2010 Curtin University of Technology and John Wiley &amp; Sons, Ltd.

Influence of inclined magnetic field on peristaltic flow of a Williamson fluid model in an inclined symmetric or asymmetric channel

Mathematical and Computer Modelling, Jul 1, 2010

ABSTRACT

Effects of heat and mass transfer on peristaltic flow of a Bingham fluid in the presence of inclined magnetic field and channel with different wave forms

Journal of Magnetism and Magnetic Materials, Aug 1, 2014

Abstract In the present analysis we discussed the influence of heat and mass transfer on the peri... more Abstract In the present analysis we discussed the influence of heat and mass transfer on the peristaltic flow of a Bingham in an inclined magnetic field and channel with different wave forms. The governing two dimensional equations of momentum, heat and mass transfer are simplified under the assumptions of long wavelength and low Reynolds number approximation. The exact solutions of momentum, heat and mass transfer are calculated. Finally, graphical behaviors of various physical parameters are also discussed through the graphical behavior of pressure rise, pressure gradient, temperature concentration and stream functions.

Influence of induced magnetic field and heat transfer on the peristaltic motion of a Jeffrey fluid in an asymmetric channel: Closed form solutions

Journal of Magnetism and Magnetic Materials, Feb 1, 2013

In this paper, we investigate the peristaltic transport of a micropolar fluid in a tapered asymme... more In this paper, we investigate the peristaltic transport of a micropolar fluid in a tapered asymmetric channel with heat transfer and induced magnetic field effect. The flow is analyzed by long wavelength and low Reynolds number approximations. The reduced equations have been solved by using Adomian decomposition method and the expressions for velocity, stream function, microrotation component, magnetic-force function, pressure gradient, axial induced magnetic field, and current density distribution across the channel have been computed. Expressions for shear stresses are also obtained. The effect of pertinent parameters is illustrated graphically. K E Y W O R D S heat transfer, induced magnetic field, micropolar fluid, peristaltic transport, tapered asymmetric channel 1 | INTRODUCTION Peristaltic pumping is a form of material transport generated by a progressive wave of area contraction or expansion along the length of a distensible tube, mixing, and transporting the fluid in the direction of the wave propagation. In the living systems, peristalsis plays an indispensable role in transporting many physiological fluids in various situations such as swallowing of foodstuff through the esophagus, vasomotion of small blood vessels, urine transport from the kidney to the bladder, transport of spermatozoa in the ducts of the male reproductive tract. Engineers designed many modern mechanical devices having industrial and physiological applications by adapting the principle of peristalsis. The problem of the mechanism of peristaltic transport has attracted the

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Simulation of Heat and Chemical Reactions on Peristaltic Flow of a Williamson Fluid in an Inclined Asymmetric Channel

DOAJ (DOAJ: Directory of Open Access Journals), Jun 1, 2013

This work concerns the peristaltic flow of a Williamson fluid model in an inclined asymmetric cha... more This work concerns the peristaltic flow of a Williamson fluid model in an inclined asymmetric channel under combined effects of heat and mass transfer. The governing nonlinear partial differential equations are simplified under the lubrication approach and then solved analytically and numerically. The analytical results are computed with the help of regular perturbation and the numerical results are found by using shooting method.

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New Frontiers in Hybrid Nanofluids for Heat Transfer Process and Applications

Frontiers Research Topics

Mechanism of double diffusive convection due to magnetized Williamson nanofluid flow in tapered asymmetric channel under the influence of peristaltic propulsion and radiative heat transfer

International Journal of Numerical Methods for Heat & Fluid Flow

Purpose The purpose of this study, thermal radiation and viscous dissipation impacts on double di... more Purpose The purpose of this study, thermal radiation and viscous dissipation impacts on double diffusive convection on peristaltic transport of Williamson nanofluid due to induced magnetic field in a tapered channel is examined. The study of propulsion system is on the rise in aerospace research. In spacecraft technology, the propulsion system uses high-temperature heat transmission governed through thermal radiation process. This study will help in assessment of chyme movement in the gastrointestinal tract and also in regulating the intensity of magnetic field of the blood flow during surgery. Design/methodology/approach The brief mathematical modelling, along with induced magnetic field, of Williamson nanofluid is given. The governing equations are reduced to dimensionless form by using appropriate transformations. Numerical technique is manipulated to solve the highly nonlinear differential equations. The roll of different variables is graphically analyzed in terms of concentrati...

Theoretical analysis of partial slip on double-diffusion convection of Eyring-Powell nanofluids under the effects of peristaltic propulsion and inclined magnetic field

Journal of Magnetism and Magnetic Materials

Convection theory on thermally radiative peristaltic flow of Prandtl tilted magneto nanofluid in an asymmetric channel with effects of partial slip and viscous dissipation

Materials Today Communications

Radio Frequency Identification Temperature/CO2 Sensor Using Carbon Nanotubes

Nanomaterials

In the world of digitization, different objects cooperate with the Internet of Things (IoT); thes... more In the world of digitization, different objects cooperate with the Internet of Things (IoT); these objects also amplify using sensing and data processing structures. Radio frequency identification (RFID) has been identified as a key enabler technology for IoT. RFID technology has been used in different conventional applications for security, goods storage, transportation and asset management. In this paper, a fully inkjet-printed chipless radio frequency identification (RFID) sensor tag is presented for the wireless identification of tagged objects. The dual polarized tag consists of two resonating structures functioning wirelessly. One resonator works for encoding purpose and other resonator is used as a CO2/temperature sensor. The sensing behavior of the tag relies on the integration of a meandered structure comprising of multi-wall carbon nanotubes (MWCNT). The MWCNT is highly sensitive to CO2 gas. The backscattered response of the square-shaped cascaded split ring resonators (SR...

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Hybrid double-diffusivity convection and induced magnetic field effects on peristaltic waves of Oldroyd 4-constant nanofluids in non-uniform channel

Alexandria Engineering Journal

Mechanism of Double-Diffusive Convection on Peristaltic Transport of Thermally Radiative Williamson Nanomaterials with Slip Boundaries and Induced Magnetic Field: A Bio-Nanoengineering Model

Nanomaterials

The present work has mathematically modeled the peristaltic flow in nanofluid by using thermal ra... more The present work has mathematically modeled the peristaltic flow in nanofluid by using thermal radiation, induced a magnetic field, double-diffusive convection, and slip boundary conditions in an asymmetric channel. Peristalsis propagates the flow in an asymmetric channel. Using the linear mathematical link, the rheological equations are translated from fixed to wave frames. Next, the rheological equations are converted to nondimensional forms with the help of dimensionless variables. Further, the flow evaluation is determined under two scientific assumptions: a finite Reynolds number and a long wavelength. Mathematica software is used to solve the numerical value of rheological equations. Lastly, the impact of prominent hydromechanical parameters on trapping, velocity, concentration, magnetic force function, nanoparticle volume fraction, temperature, pressure gradient, and pressure rise are evaluated graphically.

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Mathematical simulation of double diffusion convection on peristaltic pumping of Ellis nanofluid due to induced magnetic field in a non-uniform channel: Applications of magnetic nanoparticles in biomedical engineering

Journal of Magnetism and Magnetic Materials

Impact of Partial Slip on Double Diffusion Convection of Sisko Nanofluids in Asymmetric Channel with Peristaltic Propulsion and Inclined Magnetic Field

Nanomaterials

The current article discusses the outcomes of the double diffusion convection of peristaltic tran... more The current article discusses the outcomes of the double diffusion convection of peristaltic transport in Sisko nanofluids along an asymmetric channel having an inclined magnetic field. Consideration is given to the Sisko fluid model, which can forecast both Newtonian and non-Newtonian fluid properties. Lubricating greases are the best examples of Sisko fluids. Experimental research shows that most realistic fluids, including human blood, paint, dirt, and other substances, correspond to Sisko’s proposed definition of viscosity. Mathematical modelling is considered to explain the flow behavior. The simpler non-linear PEDs are deduced by using an elongated wavelength and a minimal Reynolds number. The expression is also numerically calculated. The impacts of the physical variables on the quantities of flow are plotted graphically as well as numerically. The results reveal that there is a remarkable increase in the concentration, temperature, and nanoparticle fraction with the rise in ...

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Impact of slip boundaries on double diffusivity convection in an asymmetric channel with magneto‐tangent hyperbolic nanofluid with peristaltic flow

ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik

Impact of slip on nanomaterial peristaltic pumping of magneto-Williamson nanofluid in an asymmetric channel under double-diffusivity convection

Pramana, 2022

Hybrid Effects of Thermal and Concentration Convection on Peristaltic Flow of Fourth Grade Nanofluids in an Inclined Tapered Channel: Applications of Double-Diffusivity

Computer Modeling in Engineering & Sciences, 2021

The Role of Double-Diffusion Convection and Induced Magnetic Field on Peristaltic Pumping of a Johnson–Segalman Nanofluid in a Non-Uniform Channel

Nanomaterials, Mar 23, 2022

This article is an open access article distributed under the terms and conditions of the Creative... more

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On Stokes' Second Problem for Burgers' Fluid over a Plane Wall