Skip to main content

Research Repository

Advanced Search

Prof Osman Beg's Outputs (449)

Analytical study of electro-osmosis modulated capillary peristaltic hemodynamics (2017)
Journal Article
Tripathi, D., Bushan, S., & Beg, O. (2017). Analytical study of electro-osmosis modulated capillary peristaltic hemodynamics. Journal of Mechanics in Medicine and Biology, 17(3), 1750052. https://doi.org/10.1142/S021951941750052X

A mathematical model is developed to analyse electro-kinetic effects on unsteady peristaltic transport of blood in cylindrical vessels of finite length. The Newtonian viscous model is adopted. The analysis is restricted under Debye-Hückel linearizati... Read More about Analytical study of electro-osmosis modulated capillary peristaltic hemodynamics.

Numerical study of nonlinear heat transfer from a wavy surface to a high permeability medium with pseudo-spectral and smoothed particle methods (2017)
Journal Article
Beg, O., Motsa, S., Beg, T., Abbas, A., Kadir, A., & Sohail, A. (2017). Numerical study of nonlinear heat transfer from a wavy surface to a high permeability medium with pseudo-spectral and smoothed particle methods. International Journal of Applied and Computational Mathematics, 3(4), 3593-3613. https://doi.org/10.1007/s40819-017-0318-4

Motivated by petro-chemical geological systems, we consider the natural convection boundary layer flow from a vertical isothermal wavy surface adjacent to a saturated non-Darcian high permeability porous medium. High permeability is considered to rep... Read More about Numerical study of nonlinear heat transfer from a wavy surface to a high permeability medium with pseudo-spectral and smoothed particle methods.

Swimming dynamics of a micro-organism in a couple stress fluid : a rheological model of embryological hydrodynamic propulsion (2017)
Journal Article
Ali, N., Sajid, M., Abbas, Z., & Beg, O. (2017). Swimming dynamics of a micro-organism in a couple stress fluid : a rheological model of embryological hydrodynamic propulsion. Journal of Mechanics in Medicine and Biology, 17(3), https://doi.org/10.1142/S0219519417500543

Mathematical simulations of embryological fluid dynamics are fundamental to improving clinical understanding of the intricate mechanisms underlying sperm locomotion. The strongly rheological nature of reproductive fluids has been established for a nu... Read More about Swimming dynamics of a micro-organism in a couple stress fluid : a rheological model of embryological hydrodynamic propulsion.

Numerical study of oxygen diffusion from capillary to tissues during hypoxia with external force effects (2017)
Journal Article
to tissues during hypoxia with external force effects. Journal of Mechanics in Medicine and Biology, 17(2), 1750027.1-1750027.20. https://doi.org/10.1142/S0219519417500270

A mathematical model to simulate oxygen delivery through a capillary to tissues under the influence of an external force field is presented. The multi-term general fractional diffusion equation containing force terms and a time dependent absorbent te... Read More about Numerical study of oxygen diffusion from capillary to tissues during hypoxia with external force effects.

Computational modelling of magnetohydrodynamic convection from a rotating cone in orthotropic darcian porous media (2017)
Journal Article
Beg, O., Prasad, V., Vasu, B., & Gorla, R. (2017). Computational modelling of magnetohydrodynamic convection from a rotating cone in orthotropic darcian porous media. Journal of the Brazilian Society of Mechanical Sciences and Engineering, 39(6), 2035-2054. https://doi.org/10.1007/s40430-017-0708-x

Free convective magnetohydrodynamic flow from a spinning vertical cone to an orthotropic Darcian porous medium under a transverse magnetic field is studied. The non-dimensionalized two-point boundary value problem is solved numerically using the Kell... Read More about Computational modelling of magnetohydrodynamic convection from a rotating cone in orthotropic darcian porous media.

Dynamics of variable-viscosity nanofluid flow with heat transfer in a flexible vertical tube under peristaltic waves (2017)
Journal Article
Beg, O., Akbar, N., Huda, A., & Khan, M. (2017). Dynamics of variable-viscosity nanofluid flow with heat transfer in a flexible vertical tube under peristaltic waves. Results in Physics, 7, 413-425. https://doi.org/10.1016/j.rinp.2016.12.036

The present investigation addresses nanofluid flow and heat transfer in a vertical tube with temperature-dependent viscosity. A Tiwari-Das type formulation is employed for the nanofluid with a viscosity modification. The transport equations are trans... Read More about Dynamics of variable-viscosity nanofluid flow with heat transfer in a flexible vertical tube under peristaltic waves.

Computational analysis of non-Newtonian boundary layer flow of Nanofluid past a vertical plate with partial slip (2017)
Journal Article
Beg, O., Rao, A., Nagendra, N., Amanulla, C., & Reddy, M. (2017). Computational analysis of non-Newtonian boundary layer flow of Nanofluid past a vertical plate with partial slip. Modelling, measurement & control. B, Solid & fluid mechanics & thermics, mechanical systems, 86(1), 271-295

In the present study, the heat, momentum and mass (species) transfer in external boundary layer flow of Casson nanofluid over a vertical plate surface with multiple slip effect is studied theoretically. The effects of Brownian motion and thermophores... Read More about Computational analysis of non-Newtonian boundary layer flow of Nanofluid past a vertical plate with partial slip.

Chemical reaction on heat and mass transfer flow past a vertical cylinder embedded in non-Darcy porous medium (2017)
Journal Article
Vasu, B., Gorla, R., Prasad, V., & Beg, O. (2017). Chemical reaction on heat and mass transfer flow past a vertical cylinder embedded in non-Darcy porous medium

An unsteady two dimensional free convection flow of a viscous incompressible fluid past an impulsively started semi-infinite vertical cylinder adjacent to a non-Darcian porous media in the presence of chemical reaction of first order is investigated.... Read More about Chemical reaction on heat and mass transfer flow past a vertical cylinder embedded in non-Darcy porous medium.

Numerical study of slip effects on unsteady aysmmetric bioconvective nanofluid flow in a porous microchannel with an expanding/ contracting upper wall using Buongiorno’s model (2016)
Journal Article
Beg, O., Basir, M., Uddin, M., & Ismail, A. (2016). Numerical study of slip effects on unsteady aysmmetric bioconvective nanofluid flow in a porous microchannel with an expanding/ contracting upper wall using Buongiorno’s model. Journal of Mechanics in Medicine and Biology, 17(3), 1750059. https://doi.org/10.1142/S0219519417500592

In this paper, the unsteady fully developed forced convective flow of viscous incompressible biofluid that contains both nanoparticles and gyrotactic microorganisms in a horizontal micro-channel is studied. Buongiorno’s model is employed. The upper c... Read More about Numerical study of slip effects on unsteady aysmmetric bioconvective nanofluid flow in a porous microchannel with an expanding/ contracting upper wall using Buongiorno’s model.

Effect of chemical reaction and viscous dissipation on MHD nanofluid flow over a horizontal cylinder : analytical solution (2016)
Presentation / Conference
Shukla, N., Rana, P., Beg, O., & Singha, B. (2016, December). Effect of chemical reaction and viscous dissipation on MHD nanofluid flow over a horizontal cylinder : analytical solution. Presented at International Conference on Recent Advances in Mathematical Sciences and its Applications RAMSA, Noida, India, Noida, India

An analytical study of the MHD boundary layer flow of electrically conducting nanofluid over a horizontal cylinder with the effects of chemical reaction and viscous dissipation is presented. Similarity transformations have been applied to transform t... Read More about Effect of chemical reaction and viscous dissipation on MHD nanofluid flow over a horizontal cylinder : analytical solution.

Electro-kinetically driven peristaltic transport of viscoelastic physiological fluids through a finite length capillary : mathematical modelling (2016)
Journal Article
Tripathi, D., Yadav, A., & Beg, O. (2017). Electro-kinetically driven peristaltic transport of viscoelastic physiological fluids through a finite length capillary : mathematical modelling. Mathematical Biosciences, 283, 155-168. https://doi.org/10.1016/j.mbs.2016.11.017

Analytical solutions are developed for the electro-kinetic flow of a viscoelastic biological liquid in a finite length cylindrical capillary geometry under peristaltic waves. The Jefferys’ non-Newtonian constitutive model is employed to characterize... Read More about Electro-kinetically driven peristaltic transport of viscoelastic physiological fluids through a finite length capillary : mathematical modelling.

Mathematical modelling of nonlinear thermal radiation effects on EMHD peristaltic pumping of viscoelastic dusty fluid through a porous medium duct (2016)
Journal Article
Bhatti, M., Zeeshan, A., Ijaz, N., Beg, O., & Kadir, A. (2016). Mathematical modelling of nonlinear thermal radiation effects on EMHD peristaltic pumping of viscoelastic dusty fluid through a porous medium duct. Engineering Science and Technology, an International Journal, 20(3), 1129-1139. https://doi.org/10.1016/j.jestch.2016.11.003

Biologically-inspired propulsion systems are currently receiving significant interest in the aerospace sector. Since many spacecraft propulsion systems operate at high temperatures, thermal radiation is important as a mode of heat transfer. Motivated... Read More about Mathematical modelling of nonlinear thermal radiation effects on EMHD peristaltic pumping of viscoelastic dusty fluid through a porous medium duct.

MHD convective heat transfer of nanofluids through a flexible tube with buoyancy : a study of nano-particle shape effects (2016)
Journal Article
tube with buoyancy : a study of nano-particle shape effects. Robotics and autonomous systems, 28(2), 453-462. https://doi.org/10.1016/j.apt.2016.10.018

This paper presents an analytical study of magnetohydrodynamics and convective heat transfer of nanofluids synthesized by three different shaped (brick, platelet and cylinder) silver (Ag) nanoparticles in water. A two-phase nanoscale formulation is a... Read More about MHD convective heat transfer of nanofluids through a flexible tube with buoyancy : a study of nano-particle shape effects.

Energy conversion under conjugate conduction, magneto-convection, diffusion and nonlinear radiation over a non-linearly stretching sheet with slip and multiple convective boundary conditions (2016)
Journal Article
Uddin, M., Beg, A., & Uddin, M. (2016). Energy conversion under conjugate conduction, magneto-convection, diffusion and nonlinear radiation over a non-linearly stretching sheet with slip and multiple convective boundary conditions. Energy, 115(Part 1), 1119-1129. https://doi.org/10.1016/j.energy.2016.05.063

Energy conversion under conduction, convection, diffusion and radiation has been studied for MHD free convection heat transfer of a steady laminar boundary-layer flow past a moving permeable non-linearly extrusion stretching sheet. The nonlinear Ross... Read More about Energy conversion under conjugate conduction, magneto-convection, diffusion and nonlinear radiation over a non-linearly stretching sheet with slip and multiple convective boundary conditions.

Irreversibility analysis for reactive third-grade fluid flow and heat transfer with convective wall cooling (2016)
Journal Article
Adesanya, S., Falade, J., Jangili, S., & Beg, O. (2016). Irreversibility analysis for reactive third-grade fluid flow and heat transfer with convective wall cooling. Alexandria engineering journal : AEJ, 56(1), 153-160. https://doi.org/10.1016/j.aej.2016.09.017

Inherent irreversibility in the flow of a reactive third grade fluid though a channel with convective heating is examined. It is well known that heat dissipated from the exothermic chemical reaction passes through fluid in an irreversible manner and... Read More about Irreversibility analysis for reactive third-grade fluid flow and heat transfer with convective wall cooling.

Numerical solutions for nonlinear gyrotactic bioconvection in nanofluid-saturated porous media with stefan blowing and multiple slip effects (2016)
Journal Article
Uddin, M., Alginahi, Y., Beg, O., & Kabir, M. (2016). Numerical solutions for nonlinear gyrotactic bioconvection in nanofluid-saturated porous media with stefan blowing and multiple slip effects. Computers and Mathematics with Applications, 72(10), 2562-2581. https://doi.org/10.1016/j.camwa.2016.09.018

A mathematical model is developed to examine the effects of the Stefan blowing, second order velocity slip, thermal slip and microorganism species slip on nonlinear bioconvection boundary layer flow of a nanofluid over a horizontal plate embedded in... Read More about Numerical solutions for nonlinear gyrotactic bioconvection in nanofluid-saturated porous media with stefan blowing and multiple slip effects.

Spectral quasilinear numerical simulation of micropolar convective wall plumes in high permeability porous media (2016)
Journal Article
Beg, O., Motsa, S., Kadir, A., Beg, T., & Islam, M. (2016). Spectral quasilinear numerical simulation of micropolar convective wall plumes in high permeability porous media. Journal of Engineering Thermophysics, 25(4), 576-599. https://doi.org/10.1134/S1810232816040147

Laminar natural convection plume of a microstructural non-Newtonian fluid along a vertical surface about a line heat source in a saturated high permeability porous medium is studied. The transformed non-linear boundary value problem is solved numeric... Read More about Spectral quasilinear numerical simulation of micropolar convective wall plumes in high permeability porous media.

Peristaltic transport of bi-viscosity fluids through a curved tube : a mathematical model for intestinal flow (2016)
Journal Article
Tripathi, D., Akbar, N., Khan, Z., & Beg, O. (2016). Peristaltic transport of bi-viscosity fluids through a curved tube : a mathematical model for intestinal flow. Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine, 230(9), 817-828. https://doi.org/10.1177/0954411916658318

The human intestinal tract is a long curved tube constituting the final section of the digestive system in which nutrients and water are mostly absorbed. Motivated by the dynamics of chyme in the intestine, a mathematical model is developed to simula... Read More about Peristaltic transport of bi-viscosity fluids through a curved tube : a mathematical model for intestinal flow.

A numerical study of magnetohydrodynamic transport of nanofluids from a vertical stretching sheet with exponential temperature-dependent viscosity and buoyancy effects (2016)
Journal Article
Akbar, N., Tripathi, D., Khan, Z., & Beg, O. (2016). A numerical study of magnetohydrodynamic transport of nanofluids from a vertical stretching sheet with exponential temperature-dependent viscosity and buoyancy effects. Chemical Physics Letters, 661, 20-30. https://doi.org/10.1016/j.cplett.2016.08.043

In this paper, 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. The Reynolds expo... Read More about A numerical study of magnetohydrodynamic transport of nanofluids from a vertical stretching sheet with exponential temperature-dependent viscosity and buoyancy effects.