http://starc.stthomas.ac.in:8080/xmlui/xmlui/handle/123456789/146 Fri, 24 Apr 2026 15:59:06 GMT 2026-04-24T15:59:06Z http://http://starc.stthomas.ac.in:8080/xmlui:8080/xmlui/bitstream/id/408653bb-4837-40d0-bd82-a2da65dff080/ http://starc.stthomas.ac.in:8080/xmlui/xmlui/handle/123456789/146 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/123456789/231 Tinospora cordifolia extract as an environmentally benign green corrosion inhibitor in acid media: electrochemical, surface morphological, quantum chemical, and statistical investigations Vidhya Thomas K; Joby Thomas K; Vinod Rapheal P; Sabu AS; Ragi K; Reeja Johnson The inhibiting capacity of Tinospora cordifolia extract (TCE) was evaluated on mild steel in 1 M HCl and 0.5 M H2SO4 by physicochemical and electrochemical techniques and by utilizing statistical tools such as response surface methodology and the Box-Behnken design (BBD). Surface properties were ascertained by scanning electron microscopy and atomic force microscopy to confirm the adsorption performance of the inhibitor molecules on the surface of the metal. Experimental results were found to agree with quantum chemical calculations of the active principle of TCE, Tinosponone. Weight loss measurements exhibited extreme inhibition power of TCE as 94.73% and 82.53% in 1 M HCl and 0.5 M H2SO4, respectively, at 5 v/v% concentration at 303 K. Electrochemical impedance spectroscopy (EIS) studies were agreed with weight loss measurements as EIS showed an inhibition efficiency of 93.51% in 1 M HCl and 88.68% in 0.5 M H2SO4 solutions. Electrochemical studies were evident that TCE can hinder reactions of the cathode and anode of mild steel. Kinetic and thermodynamic studies indicated the mixed-type adsorption behavior of TCE on mild steel by following the Langmuir adsorption isotherm in both acid media. The BBD method was applied to verify the impact of three test factors, temperature, TCE concentration, and acid concentration, on inhibition efficiency of mild steel in HCl medium. Experimental and theoretical results confirmed the anticorrosion potential of the environment-friendly inhibitor TCE. Wed, 01 Sep 2021 00:00:00 GMT http://starc.stthomas.ac.in:8080/xmlui/xmlui/handle/123456789/231 2021-09-01T00:00:00Z http://starc.stthomas.ac.in:8080/xmlui/xmlui/handle/123456789/145 Statistical analysis on three-dimensional MHD convective Carreau nanofluid flow due to bilateral nonlinear stretching sheet with heat source and zero mass flux condition Sabu, Alappat Sunny; Areekara, Sujesh; Mathew, Alphonsa This study focuses on analyzing the response of a magnetohydrodynamic convective Carreau nanofluid flow over a bilateral nonlinear stretching sheet in the presence of a heat source and zero mass flux condition. The problem has been solved numerically using the MATLAB built-in function bvp5c. The findings of velocity, temperature, and concentration profiles based on the various parameters are illustrated using graphs. The impact of various parameters on the heat transfer rate is scrutinized using statistical techniques, like, correlation coefficient, probable error, and regression. The effect of various parameters on skin friction coefficients is studied via tables and slope of linear regression. It is observed that the statistical results coincide with the numerical results. It is also noticed that the stretching ratio parameter increases the Y-directional velocity profile. Accuracy of the numerical procedure has been validated through a restrictive comparison of the present work with previous published results and is found to be in good agreement. Wed, 30 Dec 2020 00:00:00 GMT http://starc.stthomas.ac.in:8080/xmlui/xmlui/handle/123456789/145 2020-12-30T00:00:00Z http://starc.stthomas.ac.in:8080/xmlui/xmlui/handle/123456789/143 Effects of multislip and distinct heat source on MHD Carreau nanofluid flow past an elongating cylinder using the statistical method Sabu, Alappat Sunny; Areekara, Sujesh; Mathew, Alphonsa This study focuses on studying the impact of multiple slip effects on the hydromagnetic Carreau nanofluid flow over an elongating cylinder considering a linear heat source and exponential space-based heat source. Suitable transformations are used in converting the highly nonlinear system of partial differential equations governing the flow into a system of ordinary differential equations and hence resolved using the Runge–Kutta method of order four coupled with the shooting method. BVP5C and RKF45 are used to compare the numerical accuracy and an excellent agreement is noted. The parallel effect of parameters on Nusselt number is studied using surface plots and the corresponding effects are scrutinized using multiple linear regression. It is observed that the linear heat source parameter, thermal slip parameter and exponential space-based heat source parameter demote the heat transfer rate. The consequence of different parameters on drag coefficient and mass transfer are quantified using a linear regression slope. Thu, 08 Apr 2021 00:00:00 GMT http://starc.stthomas.ac.in:8080/xmlui/xmlui/handle/123456789/143 2021-04-08T00:00:00Z