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Entropy Generation Analysis in Convective Ferromagnetic Nano Blood Flow Through a Composite Stenosed Arteries with Permeable Wall

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Communications in Theoretical Physics 2017年第5期67卷 554-560页

作者： Noreen Sher Akbar Adil Wahid Butt dbs&h CEME National University of Sciences and Technology Islamabad Pakistan dbs&h MCE National University of Sciences and Technology Islamabad Pakistan

The study of heat transfer is of significant importance in many biological and biomedical industry *** investigation comprises of the study of entropy generation analysis of the blood flow in the arteries with permeable walls. The convection through the flow is studied with compliments to the entropy generation. Governing problem is formulized and solved for low Reynold's number and long wavelength approximations. Exact analytical solutions have been obtained and are analyzed graphically. It is seen that temperature for pure water is lower as compared to the copper water. It gains magnitude with an increase in the slip parameter.

关键词： ferromagnetic Nano blood flow heat transfer permeable wall magnetic field entropy

Biofluidics Study in Digestive System with Thermal Conductivity of Shape Nanosize h2O＋Cu Nanoparticles

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Journal of Bionic Engineering 2015年第4期12卷 656-663页

作者： Noreen Sher Akbar dbs&h CEME National University of Sciences and Technology Islamabad Pakistan

In the present article, peristaltic transport of copper nano fluid in a curved channel with complaint walls is studied. Shape effects of nanosize particles are discussed. The mathematical formulation encompasses momentum and heat conservation equations with appropriate boundary conditions for compliant wails. Sophisticated correlations are employed for thermal conductivity of the nanoparticles. The nonlinear boundary value problem is normalized with appropriate variables and closed-form solutions are derived for stream function, pressure gradient and temperature profile. A detailed study is performed for the influence of various nanoparticle geometries （bricks, cylinders and platelets）. With greater curvature value, pressure gradient is enhanced for various nanoparticle geometries. Temperature is dramatically modified with nanoparticle geometry and greater thermal conductivity is achieved with brick shaped nanoparticles in the fluid.

关键词： copper nanoparticles shape effects ofnanosize particles exact solutions curved channel wall properties peristalsis

heat transfer analysis of bi-viscous ciliary motion fluid

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International Journal of Biomathematics 2015年第2期8卷 219-231页

作者： Noreen Sher Akbar Z. h. Khan dbs h cemenational university of sciences and technology islamabad Pakistan Department of Mathematics University of MalakandChakdara Dir. (Lower) Khyber Pakhtunkhwa Pakistan

The impulsion system of cilia motion is deliberated by biviscosity fluid model. The problem of two-dimensional motion of biviscosity fluid privileged in a symmetric channel with ciliated walls is considered. The features of ciliary structures are resolute by the supremacy of viscous effects above inertial possessions by the long-wavelength and low Reynolds approximation. Closed-form solutions for the longitudinal pressure gradient, temperature and velocities are obtained. The pressure gradient and volume flow rate for different values of the biviscosity are also premeditated. The flow possessions for the biviscosity fluid resolute as a function of the cilia and metachronal wave velocity.

关键词： Ciliary motion symmetric channel biviscosity fluid heat transfer exact solutions.

Biomathematical analysis of carbon nanotubes due to ciliary motion

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International Journal of Biomathematics 2015年第2期8卷 161-171页

作者： Noreen Sher Akbar dbs h CEME National University of Sciences and Technology Islamabad Pakistan

In this paper, the consequences of cilia motion are reflected by the CNTs nanoparticles. The problem is expressed in a symmetric channel with ciliated walls. Exact solutions of the governing flow problem are obtained for pressure gradient, temperature and velocities of the fluid. Streamlines for the velocity profile are plotted to discuss the trapping phenomenon.

关键词： Carbon nanotubes ciliary motion symmetric channel.

An analytical and numerical study of peristaltic transport of a Johnson-Segalman fluid in an endoscope

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Chinese Physics B 2013年第1期22卷 374-383页

作者： Noreen Sher Akbar S. Nadeem dbs&h CEME National University of Sciences and Technology Islamabad Pakistan Department of Mathematics Quaid-i-Azam University 45320 Islamabad 44000 Pakistan

In the present study, we discuss the peristaltic flow of a Johnson-Segalman fluid in an endoscope. Perturbation, homotopy, and numerical solutions are found for the non-linear differential equation. The comparative study is also made to check the validity of the solutions. The expressions for pressure rise frictional forces, pressure gradient, and stream lines are presented to interpret the behavior of various physical quantities of the Johnson-Segalman fluid.

关键词： peristaltic pumping Johnson-Segalman fluid endoscope

Partial slip effect on non-aligned stagnation point nanofluid over a stretching convective surface

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Chinese Physics B 2015年第1期24卷 369-376页

作者： S.Nadeem Rashid Mehmood Noreen Sher Akbar Department of Mathematics Quaid-i-Azam University 45320Islamabad 44000Pakistan dbs&h CEMENational University of Sciences and TechnologyIslamabadPakistan

The present study inspects the non-aligned stagnation point nano fluid over a convective surface in the presence of partial slip. Two types of base fluids namely water and kerosene are selected with Cu nanoparticles. The governing physical problem is presented and transformed into a system of coupled nonlinear differential equations using suitable similarity transformations. These equations are then solved numerically using midpoint integration scheme along with Richardson extrapolation via Maple. Impact of relevant physical parameters on the dimensionless velocity and temperature profiles are portrayed through graphs. Physical quantities such as local skin frictions co-efficient and Nusselt numbers are *** is detected from numerical computations that kerosene-based nano fluids have better heat transfer capability compared with water-based nanofluids. Moreover it is found that water-based nanofluids offer less resistance in terms of skin friction than kerosene-based fluid. In order to authenticate our present study, the calculated results are compared with the prevailing literature and a considerable agreement is perceived for the limiting case.

关键词： partial slip non-aligned stagnation point nanofluid stretching convective surface

Advanced Study of Unsteady heat and Chemical Reaction with Ramped Wall and Slip Effect on a Viscous Fluid

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Communications in Theoretical Physics 2017年第3期67卷 301-308页

作者： Ayesha Sohail K.Maqbool Noreen Sher Akbar Muhammad Younas Department of Mathematics COMSATS Institute of Information technology Lahore Pakistan Department of Mathematics & Statistics FBAS IIU Islamabad 44000 Pakistan dbs&h CEME National University of Sciences and DBS&H CEME National University of Sciences and Technology Islamabad Pakistan

This paper investigate the effect of slip boundary condition, thermal radiation, heat source, Dufour number,chemical reaction and viscous dissipation on heat and mass transfer of unsteady free convective MhD flow of a viscous fluid past through a vertical plate embedded in a porous media. Numerical results are obtained for solving the nonlinear governing momentum, energy and concentration equations with slip boundary condition, ramped wall temperature and ramped wall concentration on the surface of the vertical plate. The influence of emerging parameters on velocity,temperature and concentration fields are shown graphically.

关键词： free convection thermal radiation MhD viscous dissipation chemical reaction heat source Dufour number porous media

Radiation efects on MhD stagnation point flow of nano fluid towards a stretching surface with convective boundary condition

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Chinese Journal of Aeronautics 2013年第6期26卷 1389-1397页

作者： Noreen Sher Akbar S.Nadeem Rizwan Ul haq Z.h.Khan dbs&h CEMENational University of Sciences and TechnologyIslamabad 44000Pakistan Department of Mathematics Quaid-i-Azam UniversityIslamabad 44000Pakistan School of Mathematical sciences Peking University

The aim of the present paper is to study the numerical solutions of the steady MhD two dimensional stagnation point flow of an incompressible nano fluid towards a stretching *** effects of radiation and convective boundary condition are also taken into *** model used for the nanofluid incorporates the effects of Brownian motion and *** resulting nonlinear momentum,energy and nano particle equations are simplifed using similarity *** solutions have been obtained for the velocity,temperature and nanoparticle fraction *** influence of physical parameters on the velocity,temperature,nanoparticle fraction,rates of heat transfer and nanoparticle fraction are shown graphically.

关键词： Convective boundary condition Nanoparticles Numerical solutions Radiation effects Stagnation point Stretching surface

Nano Fluid Flow Analysis in the Presence of Slip Effects and Wall Properties by Means of Contraction and Expansion

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Communications in Theoretical Physics 2018年第9期69卷 337-343页

作者： hina Sadaf Rabia Malik dbs&h CEMENational University of Sciences and TechnologyIslamabadPakistan Department of Mathematics and Statistics International Islamic UniversityIslamabad 44000Pakistan

The present article is a study of mixed convective peristaltic flow of Cu-blood nanofluid confined in a non-uniform tube along with the velocity slip conditions and wall *** or catheterized special effects are also taken into *** utilization of the large wavelength and small reynolds number approximation,the non-dimensional governing differential equation took a more simplified form,which is then solved for the exact ***,these outcomes are offered graphically and are debated in *** profile for pure blood as well as Cu-blood and no-slip and slip effects are also discussed *** pattern is also discussed for different physical parameters.

关键词： peristaltic flow exact solution viscous nanofluid mixed convection velocity slip conditions nonuniform tube endoscopic tube wall properties