http://starc.stthomas.ac.in:8080/xmlui/xmlui/handle/123456789/26 Fri, 24 Apr 2026 12:43:43 GMT 2026-04-24T12:43:43Z http://http://starc.stthomas.ac.in:8080/xmlui:8080/xmlui/bitstream/id/45e4452e-71ef-4247-89d5-7dcf2f77fc27/ http://starc.stthomas.ac.in:8080/xmlui/xmlui/handle/123456789/26 http://starc.stthomas.ac.in:8080/xmlui/xmlui/handle/123456789/433 Hydromagnetic °ow of magnetite–water nano°uid utilizing adapted Buongiorno model Oudina, F. Mebarek; Preeti; Sabu, A. S; Vaidya, H.; Lewis, R. W.; Areekara, S.; Mathew, A.; Ismail, A. I. The hydromagnetic °ow of magnetite–water nano°uid due to a rotating stretchable disk has been numerically assessed. The nano°uid °ow has been modeled utilizing the adapted Buongiorno model that considers the volume fraction-dependent e®ective nano°uid properties and the major slip mechanisms. In addition, experimentally gleaned functions of e®ective dynamic viscosity and e®ective thermal conductivity are deployed. The modeled equations are transformed into a ¯rst-order ODEs scheme employing Von K arm an's similarity conversions and then resolved via the Runge–Kutta algorithm through the shooting technique. The impact of pertinent terms over the physical quantities, nanoliquid temperature and nanoliquid concentration is explained with the support of graphs. Results show that rising volume fraction of magnetite nanoparticles (NPs) and magnetic ¯eld term enhance the drag force. Mass transport rate is demoted with augmenting values of magnetic ¯eld parameter whereas is promoted with increase in Schmidt number. Further, it is detected that the changes in stretching strength parameter are directly proportional to Nusselt number and inversely proportional to the thermal ¯eld. The ¯ndings of this numerical analysis have applications in spin coating,rotating disk reactors, storage devices for computers, food processing, and rotating heat exchangers. Thu, 02 Mar 2023 00:00:00 GMT http://starc.stthomas.ac.in:8080/xmlui/xmlui/handle/123456789/433 2023-03-02T00:00:00Z http://starc.stthomas.ac.in:8080/xmlui/xmlui/handle/123456789/431 Lie group analysis on EMHD Jeffrey nanofluid flow with exponential heat source: Heat transfer optimization using RSM Tak, Priya; Poonia, Hemant; Areekara, Sujesh; Mathew, Sr. Alphonsa The present research examines the behavior of a Jeffrey nanofluid flow across a stretching sheet under the effect of electric and magnetic fields. It comprises the Buongiorno model as well as an exponential heat source. The impact of chemical reaction has also been taken into consideration. While assuming no mass flux, the study considers boundary conditions for thermal convection and velocity slip. Lie group transformations are employed to transform the set of governing equations into a dimensionless system and later simulated using the finite difference scheme. It is found that the velocity profile rises as the Deborah number is enhanced whereas the ratio of relaxation to retardation time parameter has an inverse effect on the velocity profile. It is noted that per unit change in the Deborah number descends the drag coefficient by 31.29%. In this study, the response surface methodology and sensitivity analysis have been conducted by choosing heat transport as the dependent variable and the electric-field parameter ð0:01 � E � 0:03Þ, exponential heat source parameter ð0:02 � Qe � 0:06Þ, and Biot number ð0:15 � Bi � 0:25Þ as the independent variables. The Nusselt number escalates when the Bi number is increased and drops as the E values are raised. In the instance of the Biot number, the Nusselt number exhibits the maximum sensitivity Wed, 01 May 2024 00:00:00 GMT http://starc.stthomas.ac.in:8080/xmlui/xmlui/handle/123456789/431 2024-05-01T00:00:00Z http://starc.stthomas.ac.in:8080/xmlui/xmlui/handle/123456789/397 Publisher Correction: Significance of nanoparticle radius on EMHD Casson blood-gold nanomaterial flow with non-uniform heat source and Arrhenius kinetics Areekara, Sujesh; Sabu, A. S.; Mathew, Alphonsa; Parvathy, K. S.; Rana, Puneet Fri, 06 Oct 2023 00:00:00 GMT http://starc.stthomas.ac.in:8080/xmlui/xmlui/handle/123456789/397 2023-10-06T00:00:00Z http://starc.stthomas.ac.in:8080/xmlui/xmlui/handle/123456789/183 Span-wise fluctuating MHD convective heat and mass transfer flow through porous medium in a vertical channel with thermal radiation and chemical reaction Mathew, Alphonsa; Singh, KD An exact solution of span-wise fluctuating magnetohydrodynamic (MHD) convective flow problem of a viscous, incompressible and electrically conducting fluid through a porous medium filled in an infinite vertical channel is obtained. The channel walls at and at are subjected to span-wise cosinusoidally varying species concentration and temperature. A magnetic field of uniform strength is applied perpendicular to the planes of the channel plates. The magnetic Reynolds number is assumed very small so that the induced magnetic field is neglected. The temperature difference between the plates is high enough to induce the heat due to radiation. The Rosseland approximation is used to describe the radiation heat flux for the fluid as optically-thick gray gas, absorbing/emitting but non-scattering medium. The partial differential equations governing the flow are solved exactly under the prescribed boundary conditions for the velocity, temperature and species concentration fields. The velocity, temperature, concentration and the skin-friction, Nusselt number, Sherwood number in terms of their amplitudes and phase angles have been shown graphically to observe the effects of different flow parameters. The final results are then discussed in detail in the last section of the paper with the help of figures. Tue, 30 Jun 2015 00:00:00 GMT http://starc.stthomas.ac.in:8080/xmlui/xmlui/handle/123456789/183 2015-06-30T00:00:00Z