# Sivasankaran SivanandamKing Abdulaziz University · Department of Mathematics

Sivasankaran Sivanandam

Ph.D.

## About

234

Publications

36,533

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Introduction

Sivasankaran Sivanandam received M.Sc., M.Phil., and Ph.D. degrees in 2000, 2002, 2006 respectively. After that he received the Post-Doctoral Fellowships four times in 2006, 2007, 2008 and 2011 respectively. His areas of interest are Fluid Dynamics, CFD, Convective Heat and Mass Transfer, Nanofluids, Porous Media, and Microchannel Heat Sinks. He is a member of editorial board in several international journals.

Additional affiliations

April 2012 - present

## Publications

Publications (234)

Purpose
This study aims to present the consequences of activation energy and the chemical reactions on the unsteady MHD squeezing flow of an incompressible ternary hybrid nanofluid (THN) comprising magnetite (FE 3 O 4 ), multiwalled carbon nano-tubes (MWCNT) and copper (Cu) along with water (H2O) as the base fluid. This investigation is performed w...

Purpose
This study aims to investigate numerically the impact of the three-dimensional convective nanoliquid flow on a rotating frame embedded in the non-Darcy porous medium in the presence of activation energy. The cross-diffusion effects, i.e. Soret and Dufour effects, and heat generation are included in the study. The convective heating conditio...

Purpose
The study aims to explore how Soret and Dufour diffusions, thermal radiation, joule heating and magnetohydrodynamics (MHD) affect the flow of hybrid nanofluid (Al 2 O 3 -SiO 2 /water) over a porous medium using a mobile slender needle.
Design/methodology/approach
To streamline the analysis, the authors apply appropriate transformations to...

In this study, numerical simulations are conducted with the goal of exploring the impact of the direction of the moving wall, solute and thermal transport, and entropy production on doubly diffusive convection in a chamber occupied by a Casson liquid. Wall movement has a significant impact on convective flow, which, in turn, affects the rate of mas...

The principal objective of the study is to examine the impact of thermal radiation and entropy generation on the magnetohydrodynamic hybrid nano-fluid, Al2O3/H2O, flow in a Darcy–Forchheimer porous medium with variable heat flux when subjected to an electric field. Investigating the impact of thermal radiation and non-uniform heat flux on the hybri...

The present work analyzes the free convective boundary layer flow of nanofluids around a heated and spinning down pointing vertical cone with the effect of magnetic field placed in a porous medium. The solutions of the partial differential equations with slip boundary conditions, which describes the flow are attained by a numerical based technique...

In the manufacturing sector, transport phenomena near the stagnation region are frequent, particularly in the polymer and extrusion processes, which require continuous improvement to raise the process’s quality standards. The aim of this study is to explore the improvement of heat and mass transmission using unsteady magnetohydrodynamic (MHD) hybri...

Purpose
The purpose of this study is to provide that porous media and viscous dissipation are crucial considerations when working with hybrid nanofluids in various applications.Recent years have witnessed significant progress in optimizing these fluids for enhanced heat transfer within porous (Darcy–Forchheimer) structures, offering promising solut...

Purpose
This paper aims to explore the double diffusive magneto-hydrodynamic (MHD) squeezed flow of (Cu–water) nanofluid between two analogous plates filled with Darcy porous material in existence of chemical reaction and external magnetic field.
Design/methodology/approach
The governing nonlinear equations are transformed into ordinary differenti...

The main objective of the paper is to explore the effects of Soret and Dufour on MHD mixed bioconvection of nanofluid in a flat channel with chemical reaction, radiation, Joule heating and partial (velocity) slip. The related ordinary differential equations are comprised of velocity, energy, nanoparticle concentration, solutal concentration and mic...

This investigation focuses on the impact of Stefan blowing on the flow of hybrid nanoliquids over a moving slender needle with magnetohydrodynamics (MHD), thermal radiation, and entropy generation. To facilitate analysis, suitable transformations are applied to convert the governing partial differential equations into a set of ordinary differential...

Purpose
The numerical analysis is to scrutinize the collective effect of convective current along with the thermal energy transport in an inclined lid-driven square chamber with sine curve based temperature at the lower wall in the existence of unchanging external magnetic field. Insulation has been placed on the left and right of the box to increa...

Currently, the efficiency of heat exchange is not only determined by enhancements in the rate of heat transfer but also by economic and accompanying considerations. Responding to this demand, many scientists have been involved in improving heat transfer performance, which is referred to as heat transfer enhancement, augmentation, or intensification...

The current study used a novel Casson model to investigate hybrid Al2O3-Cu/Ethylene glycol nanofluid flow over a moving thin needle under MHD, Dufour–Soret effects, and thermal radiation. By utilizing the appropriate transformations, the governing partial differential equations are transformed into ordinary differential equations. The transformed o...

The impacts of Stefan blowing along with slip and Joule heating on hybrid nanofluid (HNF) flow past a shrinking cylinder are investigated in the presence of thermal radiation. Using the suitable transformations, the governing equations are converted into ODEs, and the MATLAB tool bvp4c is used to solve the resulting equations. As Stefan blowing inc...

Heat transfer improvement using electro-magneto hydrodynamics is a technique that can result in significant heat exchanger reduction as well as “on-demand” heat transfer. Electrohydrodynamic (EHD) is a multidisciplinary science that studies how fluids interact with electric fields or charges. It has been found applications in many areas such as EHD...

The intension of the present research analysis is to explore by theoretical study about the flow of chemically reacting nanofluid above a stretched permeable sheet in rotation. The other effects combined are internal heat generation, activation energy and thermal radiation in a convective heat and mass transport of the system. The impacts of moveme...

The objective of this paper is to investigate the 3D non-linearly thermally radiated flow of a Jeffrey nanofluid towards a stretchy surface with the Cattaneo–Christov heat flux (CCHF) model in the presence of a convective boundary condition.The Homotopy Analysis Method (HAM) is used to solve the ordinary differential equation that is obtained by re...

The focal interest in this article is to investigate the Stefan blowing and Dufour and Soret effects on hybrid nanofluid (HNF) flow towards a stretching cylinder with thermal radiation. The governing equations are converted into ODE by using suitable transformations. The boundary value problem solver (bvp4c), which is a package in the MATLAB, is us...

This article presents the investigation relating to the mass and heat transfer characteristics of MHD copper-water unsteady incompressible nanofluid flow squeezed within two parallel plates in the presence of applied magnetic field and chemical reaction by employing a systematic method called Differential Transformation Method (DTM) and numerically...

This communication expresses the consequences of thermal radiation of a Maxwell liquid upon a porous Riga plate with internal heat consumption and chemical reaction. Energy and mass equations were derived with the presence of thermal and solutal stratifications. The relevant variables are applied to remodel the obtained PDEs to non-linear ODE model...

Combined convection of an electrically conductive fluid in an inclined cube is analyzed numerically under the influence of the unvarying transverse magnetic field. Left vertical wall of the box is heated partially in three locations bottom, middle and top, whereas the entire opposite vertical wall is set at temperature lesser constantly. The bottom...

The purpose of numerical exploration is to learn the fathom of the convective transport in a porous box of square size consists of water around its maximum density. The barrier on the left side is subjected to rise in temperature linearly, while right border is cooled with unvarying temperature. Adiabatic flat barriers are considered. The Darcy For...

The main objective within this content of paper is the study concentrated towards the effect of slip velocity and internal heat generation on convection flow of fluid in a rotating frame. Examination of the characteristics of the viscous fluid in a permeable medium under the transport of mass as well as heat energy in combination with activation en...

This paper presents the outcome of the investigation on the flow of copper-water nanofluid squeezed between two moving parallel plates filled with a Darcy porous medium in existence of a magnetic field using Differential Transformation Method (DTM)—a semi-analytical method. In the current study, the consequence of radiation parameter and the use of...

The aim of the current numerical simulation was to understand the effects of the temperature-dependent properties of viscosity and thermal conductivity on the buoyant convection of cold water around its density extremum in a tilting chamber. The equations for thermal conductivity and viscosity were derived based on the reference temperature paramet...

In this paper, MHD Brinkman-type fluid flow containing Titanium dioxide and silver nanoparticle hybrid nanoparticles with generalized Mittag-Leffler kernel based fractional derivative is investigated in the presence of bio convection. The governing equations with dimensional analysis and fractional approach are obtained by using the fractional Four...

The motive of this numerical analysis is to explore the natural convective thermal energy transfer in an inclined square porous chamber. The left side and right side vertical walls of the enclosure are maintained with sinusoidal heating. The lower and upper walls are kept with adiabatic temperature. The finite volume approach is implemented to get...

The performance augmentation of the heat exchangers is a deal between heat transfer improvement and pressure loss penalty. There is no study investigating this deal as the thermal performance index of the heat exchangers filled by hybrid nanofluid and porous media. The thermophysical properties of TiO2–Al2O3/water are available in the literature, b...

The phenomenon of convective flow with heat and mass transfer has been studied extensively due to its applications in various fields. The effects of nonlinear thermal radiation (NLTR), slip, thermal-diffusion (Soret) and diffusion-thermo (Dufour) on magenoto-hydrodynamic (MHD) flow towards a stretching cylinder in the presence of triple stratificat...

The main purpose of the present research is to emphasize the importance of nanofluids that reacts chemically on a stretched sheet. The theoretical investigation of the nanofluid in three dimension flow along a stretched sheet is taken into consideration. As the stretched sheet is porous the velocity of the nanofluid slows down and simultaneously th...

The objective of the current numerical study is to explore the combined natural and forced convection and energy transport in a channel with an open cavity. An adiabatic baffle of finite length is attached to the top wall. The sinusoidal heating is implemented on the lower horizontal wall of the open cavity. The other areas of the channel cavity ar...

The convective three-dimensional magnetohydrodynamic (MHD) boundary layer transport of Casson liquid by an unsteady stretchable sheet set in a permeable medium with variable thermal conductivity is researched. Conservation laws of the mass, the momentum and the energy are changed into ordinary differential equations, which are numerically dealt wit...

In this study, the heat transport is scrutinized in the flow of magnetized Burgers fluid accelerated by stretching cylinder. Rather than, classical Fourier's and Fick's laws, the Cattaneo-Christov theory featuring the improved heat and mass conduction is utilized to investigate the energy transport. Further, the transport of thermal and solutal ene...

Buoyancy-driven convection in an annular space between two upright concentric cylinders having finite thickness of inner/outer cylinder is an essential physical structure exposing several practical applications. The current article reports the coupled conduction-convection transfer in an upright porous annular space and the buoyant convective strea...

Understanding the flow behavior of non-Newtonian fluids required more research in terms of various aspects. Because the role of heat transfer in non-Newtonian flows is dominant due to its importance in technology. For these benefits, a theoretical investigation is carried out to analyze the time-dependent flow of non-Newtonian fluid with a focus on...

TThis study is to investigate the effect of the chemical process by activation energy on heat transference and mass transference of a fluid by heat generation parameter (Hg) and radiation parameter (Rd). Attention has been given to the changes caused on the temperature by the flow in rotating frame by the heat generation parameter, Biot number, and...

The article explains the significance of convective flow of a chemically reacting non-Newtonian fluid over a Riga plate with the presence of heat absorption/generation and double stratification. The Cattaneo-Christov heat and mass flux’s equations are utilized to frame the energy and concentration equations. The governing nonlinear boundary layer s...

The rate of change of thermal and flow transfer inside an enclosed box under the effect of thermal radiation and convective flow driven by buoyancy force with discrete heating and cooling is analyzed here. The “Cattaneo-Christov heat flux’ (CCHF) pattern is implemented in thermal energy model. The study is performed by varying the partial thermal s...

This study tries to employ the computational fluid dynamics (CFD) approach to investigate the influence of the simultaneous use of the metal foam (porous media) and the water-based nanofluid on the boiling flow regime. For this purpose, boiling flow heat transfer of water-based copper nanofluid inside of both simple pipe and aluminum metal foam pip...

Going forward towards developing and improving renewable energies in Algeria is one of the main objectives of this study, especially, solar energy that is an exceptional and continuous source of energy. Algerian Sahara has a large area suitable for agriculture, but not connected to the electricity network. Therefore, the construction of solar power...

We examine within this content of the paper the characteristics of heat transfer and transfer of mass along with activation energy about a chemically reacting viscous fluid in rotating frame. The effect of Soret and Dufour parameter is done additionally. The porous space gets filled by flow in stretched sheet. The influence of different standards o...

This article presents the results of the studies relating to the squeezing flow of copper–water nanoliquid between two moving parallel plates in existence of a magnetic field using a semi analytical technique namely Differential Transformation Method (DTM). A special feature of this paper is the inclusion of heat radiation term on the flow behavior...

A numeric investigation is executed to understand the impact of moving-wall direction, thermal radiation, entropy generation and nanofluid volume fraction on combined convection and energy transfer of nanoliquids in a differential heated box. The top wall of the enclosed box is assumed to move either to the left or the right direction which affects...

The current investigation analyzes the effects of partial slip and heat generation on the mixed convection flow with heat transfer in an inclined double lid-driven square cavity containing centered square adiabatic obstacle in the presence of magnetic field. The used cavity is subjected to constant heat flux and filled with Cu-water nanofluid. The...

The impact of gyrotactic microorganisms of a stratified flow of a thermally radiative NL with heat absorption is highlighted. In addition, magneto NL with an inclined magnetic field is included. Suitable transformations are adopted to convert the governing PDEs into an nonlinear ODEs. Homotopy analysis method (HAM) is employed to solve these ODEs a...

An unsteady combined convective flow and energy transfer in an inclined lid-driven square box with sinusoidal boundary temperatures at the vertical sidewalls in the presence of uniform magnetic field is numerically investigated. The horizontal sides of the box are thermally insulated. The governing equations are numerically solved by using finite d...

The aim of the numerical simulation is to explore the laminar, incompressible, buoyant induced convection flow and heat transfer of Casson fluid in a porous square box in the presence of thermal radiation. Thermal insulation is imposed on horizontal walls. The vertical boundaries of the closed box are maintained with sinusoidal thermal distribution...

The intention of the paper is to find the outcome of thermal radiation of a second grade fluid over a Riga plate with Cattaneo-Christov (CC) double flux and double stratification’s. The governing mathematical models are changed into an ordinary differential equations (ODE) using suitable transformations. These resultant models are analytically solv...

The purpose of this paper is to investigate the Soret and Dufour effects on unsteady mixed convective boundary layer flow of a viscous fluid over a stretching surface in a porous medium in the presence of magnetic field with heat generation/absorption, chemical reaction, suction/injection and convective boundary condition. The governing time-depend...

The goal of the current numerical simulation is to explore the impact of aspect ratio, thermal radiation, and entropy generation on buoyant induced convection in a rectangular box filled with Casson fluid. The vertical boundaries of the box are maintained with different constant thermal distribution. Thermal insulation is executed on horizontal bou...

Purpose
This study aims to deal the numerical simulation on buoyant convection and energy transport in an inclined cubic box with diverse locations of the heater and coolers.
Design/methodology/approach
The left/right walls are cooled partially whereas the other walls are kept adiabatic. In the left/right walls, three different locations of the co...

This investigation is to concentrate on the effect of thermal radiation on free convection of a Cu-water nanofluid in a differentially heated cavity containing a solid square block placed in the middle. The upper and lower dividers of the cavity are kept as thermally protected; The coupled equations of mass, momentum, and energy are governed the ma...

This article express the outcomes of mixed convective flow of a chemically
reacting Oldroyd-B liquid (OBL) with Cattaneo-Christov double flux (CCDF)
under the consequence of second order slip (SS), heat absorption (HA)/heat
generation (HG) and Newtonian cooling (NC)/Newtonian heating (NH). The
governing PDEs are converted into ODEs using suitable v...

The effects of viscous dissipation and convective boundary condition on the two-dimensional convective ow of a second-grade liquid over a stretchable surface with suction/injection and heat generation were investigated. The governing partial differential equations were reduced into a dimensionless coupled system of nonlinear ordinary differential e...

The aim of the present numerical study is to analyze the effect of cooler location and aspect ratio and position of the hot solid body inside the enclosure on three-dimensional natural convection flow in a cubical enclosure. The cooler and heater positions and aspect ratio of the heater in a cavity are examined under different combinations of parti...

The thermal diffusion and diffusion-thermo effects on radiative mixed convective flow and heat transfer of Casson-Williamson fluid over a stretching surface are examined in the presence of uniform external magnetic field. The thermal radiation and chemical reaction effects are included in the study. This physical model is mathematically modelled by...

The key goal of the article is to examine the non-linear thermal radiation and double stratification effects on 3D MHD convective stream of nanoliquid over a non-linear stretchable surface in a porous medium. Using suitable transformations, the governing systems are converted into ODEs and are solved by using homotopy analysis method (HAM). While i...

The analysis on the changes due to mass and heat transfer in the presence of chemical reaction, thermal radiation, internal heat generation, and Dufour-Soret effects on an unsteady hydromagnetic combined convection stagnation-point flow toward a vertical plate embedded in a solutally and thermally stratified porous surrounding subjected to the slip...

The influence of slip and convective boundary heating on unsteady forced convective heat transfer of an electrically conducting incompressible fluid over a flat plate in the presence of uniform magnetic field along with chemical reaction is examined. The governing partial differential equations are transformed into ordinary differential equations b...

In this paper, we investigate the Dufour and Soret effects on MHD mixed convection of a chemically reacting fluid over a stretching surface in a porous medium with convective boundary condition. The similarity transformation is used to reduce the governing non-linear partial differential equations into ordinary differential equations. Then, they ar...

Boundary layer flow of Upper-Convected Maxwell fluid over a wedge with suction and heat generation/absorption is presented in this paper by considering the Cattaneo-Christov heat flux model. The governed equations are transformed into a set of the ordinary differential equation using similarity transformations. A third-order finite difference metho...

The effects of thermal radiation and chemical reaction on the mixed bioconvection nanofluid flow with gyrotactic microorganisms along horizontal channel are analysed.The homotopy analysis method (HAM) is assigned to find the analytic solution of ordinary non-linear differential equations using appropriate similarity variables. The physicalinterpret...

The steady two-dimensional MHD mixed convection flow and heat transfer characteristics of an Oldroyd-B fluid over a linear stretchy sheet is considered. The flow caused by a linear stretchy sheet with effects of velocity, temperature and concentration slips. The thermal radiation, internal heat generation effects are included in the study. The resu...

The main aim of the article is to analyze the non-linear thermal radiation and velocity slip effects on three-dimensional MHD convective flow of nanofluid over a non-linear stretching sheet in a porous medium with convective boundary condition. Using suitable transformations, the governing equations are transformed into ordinary differential equati...

The motive of the present numerical study is to analyze the density maximum effect of double diffusive buoyancy-driven convection in a square porous box. The horizontal walls are treated as adiabatic and the vertical walls are maintained with different temperatures. The right wall is heated sinusoidally while the left wall kept with constant temper...

The heat absorption/generation and chemical reaction effects of unsteady flow of a viscous fluid over a stretching plate is analyzed. The governing PDF models are converted into an ODE model with the help of similarity variable and they are solved analytically using the homotopy analysis method (HAM) and numerically by Runge-Kutta fourth order meth...

The goal of this numerical study is to understand the free convection flow and transfer of heat in a differentially heated cavity having solid block in the centre. The coupled equations of momentum, mass and energy are governed the mathematical model. The governing equations are solved via utilizing the finite difference technique. The outcomes are...

The numerical study is executed to inspect the laminar free convective characteristics of different nanoliquids in a square partitioned enclosure. An adiabatic baffle is attached on the bottom of the enclosed space. The left barrier is heated linearly whereas the right barrier temperature is kept as constant. The horizontal barriers of enclosed spa...

The study reports influence of linear thermal conditions on buoyancy driven convection in an upright porous annular space, in which inner cylinder is linearly heated while the outer cylinder is maintained at uniform or non-uniform thermal condition. However, top boundary is insulated and bottom boundary is uniformly cooled. Using the finite differe...

Unsteady double diffusive chemically reactive MHD thin fluid layer flow near the surface of an electrically conducting fluid with incompressibility past a flat surfaced plate is investigated by similarity analysis. The mathematically formulated PDEs are converted into ODEs by utilizing the similarity transforms. Then the numerical solution is deter...