Dr. J. VISUVASAM
@pasc.edu.in
Assistant Professor of Mathematics
Parvathy's Arts and Science College
I am Dr. J. Visuvasam. Currently, I am working as Assistant Professor of Mathematics at Parvathy's Arts and Science College, Dindigul-624002. I completed my Ph.D in Mathematics at Saraswathi Narayanan College, Maduri. I have publised 25 papers in National and International journals.
RESEARCH, TEACHING, or OTHER INTERESTS
Mathematics, Mathematical Physics, Modeling and Simulation, Numerical Analysis
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Scopus Publications
James Visuvasam and Hammad Alotaibi
MDPI AG
The study of Von Kármán swirling flow is a subject of active interest due to its applications in a wide range of fields, including biofuel manufacturing, rotating heat exchangers, rotating disc reactors, liquid metal pumping engines, food processing, electric power generating systems, designs of multi-pore distributors, and many others. This paper focusses on investigating Von Kármán swirling flows of viscous incompressible fluid due to a rotating disk electrode. The model is based on a system of four coupled second-order non-linear differential equations. The purpose of the present communication is to derive analytical expressions of velocity components by solving the non-linear equations using the homotopy analysis method. Combined effects of the slip λ and porosity γ parameters are studied in detail. If either parameter is increased, all velocity components are reduced, as both have the same effect on the mean velocity profiles. The porosity parameter γ increases the moment coefficient at the disk surface, which monotonically decreases with the slip parameter λ. The analytical results are also compared with numerical solutions, which are in satisfactory agreement. Furthermore, the effects of porosity and slip parameters on velocity profiles are discussed.
M. Rajaram, Uma Maheswari Mariappan, J. Visuvasam, A. Meena, L. Rajendran, and M.E.G. Lyons
Elsevier BV
S. Thamizh Suganya, J. Visuvasam, and L. Rajendran
AIP Publishing
E. Arul Vijayalakshmi, James Visuvasam, and M. Kannan
The Electrochemical Society
An analytical approach has been used to study the heat and mass transfer from a vertical plate embedded in a porous medium experiencing a first-order chemical reaction and exposed to a transverse magnetic field. Instead of the commonly used conditions of constant surface temperature or constant heat flux, a convective boundary condition is employed which makes this study unique and the results more realistic and practically useful. The momentum, energy, and concentration equations derived as coupled second-order, ordinary differential equations are solved analytically a highly accurate and thoroughly tested using Homotopy Perturbation Method. The effects of Biot number, thermal Grashof number, permeability parameter, Hartmann number, Eckert number, Sherwood number and Schmidt number on the velocity, temperature, and concentration profiles are illustrated graphically. Proportional to the plate surface temperature, the local skin-friction coefficient, the local Nusselt number and the local Sherwood number were also presented analytically. The discussion focuses on the physical interpretation of the results as well their comparison with the results of previous studies.
E. Arul Vijayalakshmi, S. S. Santra, T. Botmart, H. Alotaibi, G. B. Loganathan, M. Kannan, J. Visuvasam, and V. Govindan
American Institute of Mathematical Sciences (AIMS)
<abstract><p>This paper develops the combined effects of free convection magnetohydrodynamic (MHD) flow past a vertical plate embedded in a porous medium. The dimensionless coupled non-linear equations are solved to get the approximate analytical expression for the concentration by using the homotopy perturbation method. For all possible values of parameters, skin lubrication, Nusselt number and Sherwood number are derived.</p></abstract>
R. Shanthi, T. Iswarya, J. Visuvasam, L. Rajendran, and Michael E.G. Lyons
Elsevier BV
R. Shanthi, T. Iswarya , J. Visuvasam, L. Rajendran, Michael E.G. Lyons 1 Department of Mathematics, AMET (Deemed to be University), Kanathur, Chennai, India 2 Department of Mathematics, Alagappa Govt. Arts College, Karaikudi, Tamilnadu, India 3 Department of Mathematics, Saraswathi Narayanan College, Perungudi, Madurai, India. 4 School of Chemistry & AMBER National Centre, University of Dublin, Trinity College Dublin, Dublin 2, Ireland E-mail: raj_sms@rediffmail.com
R. Umadevi, J. Visuvasam, K. Venugopal, and L. Rajendran
AIP Publishing
J. Visuvasam, A. Meena, and L. Rajendran
Elsevier BV
J. Visuvasam, A. Molina, E. Laborda, and L. Rajendran
Elsevier BV
An analytical expression of the current generated from the electrochemical reaction in a porous rotating disk electrode (PRDE) is derived when the reactant transport is dominated by advection and diffusion. Simple algebraic expressions for the concentration of reactant and the current response are obtained as a function of the rotation rate, reaction rate, permeability of the porous medium, diffusion coefficients, kinematic viscosity, and geometry of the porous film. Upon comparison, the analytical expression of current in this work coincides with the existing results for the limiting case of low rotation rates. Also the concentration/current expressions here derived are in satisfactory agreement with numerical results.
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TNSCST, DOTE Campus, Chennai (Students Projects scheme) : Mathematical modelling of the biofilteration treating mixtures of toluene and n-propanol in the biofilm and gas phase (2022-2023), Project Code : BS-0698.