MHD HYPERBOLIC TANGENT CASSON-WILLIAMSON NANOFLUID OVER A LINEARLY STRETCHING SHEET WITH THERMOPHORESIS AND BROWNIAN MOTION B Shashidar Reddy, B Narsimha Reddy, K Saritha, Christophe Chesneau International Journal of Applied Mechanics and Engineering, 2025 The main aim of this research is to investigate the effects of Brownian motion and Thermophoresis on an MHD hyperbolic tangent Williamson-Casson nanofluid passing over a stretching sheet. Through appropriate similarity transformations, non-linear partial differential equations governing the model can give rise to non-linear ordinary differential equations. These equations are solved numerically using the Keller-Box method. The quantities related to engineering aspects, such as skin friction, Sherwood number, heat exchange and the various effects of quantifiers on momentum, temperature, and concentration are illustrated with examples for better understanding. For the sake of accuracy, the computational resolution of this research is limited to the published data and is derived from the Keller-Box approach. Heat exchangers, chemical reactors, and thermal management systems are just some of the technological applications for which the study's conclusions may have broad implications. Skin friction increases with Casson and Williamson parameters. For both the fluids, mass transfer is accelerated with Brownian effect while heat transfer decelerates with Thermophoresis effect. The combination of Casson-Williamson characteristics, hyperbolic tangent fluid dynamics and MHD provides a novel way of understanding non-Newtonian fluids in the presence of magnetic fields.
Synthesis and molecular docking studies of some new 2-N-acylaminobenzothiazole derivatives Bhaskar Pittala, Srinivasa Reddy Bireddy, Laxminarayana Eppakayala, Venkata Ramana Reddy Chittireddy, Saritha Kallu Indian Journal of Heterocyclic Chemistry, 2025 A series of 2-N-acylaminobenzothiazole derivatives was synthesized. The precursor 6-methylbenzothiazol-2- amine was synthesized from commercially available p-toluidine, which was then reacted with acid chloride or carboxylic acid using appropriate conditions to obtain 2-N-acylaminobenzothiazole derivatives. All the synthesized compounds were characterized by spectral analysis and performed for their docking studies.. KEYWORDS :Benzothiazole, Carboxamide, Molecular docking, Acid chloride.
Comparative numerical study featuring magnetized nanofluids configured by elongating sheet with thermophoresis and Brownian motion Srinivasa Rao Puchakayala, Shashidar Reddy Borra, Saritha Kallu, Shoira Formanova, M. Ijaz Khan, M. Waqas, Furqan Ahmad, Manish Gupta Partial Differential Equations in Applied Mathematics, 2024 This study investigates the heat and mass transfer characteristics of MHD rotating Fe₃O₄-Al₂O₃/H₂O hybrid nanofluid flow over a three-dimensional stretching surface. Comparative analysis was conducted among the base fluid H₂O, Al₂O₃-H₂O nanofluid, and Fe₃O₄-Al₂O₃/H₂O hybrid nanofluid, focusing on velocity, temperature, and concentration distributions influenced by thermophoresis, Brownian motion, Hall current, temperature ratio, magnetic parameter, rotation, and thermal radiation. The governing nonlinear partial differential equations were transformed into ordinary differential equations using similarity adaptations and solved numerically with the BVP-5C method in MATLAB. Results indicate that increasing the thermophoresis and Brownian motion parameters elevates the temperature profile while affecting the concentration distribution differently. The hybrid nanofluid exhibited a higher temperature distribution compared to the nanofluid and base fluid, whereas the base fluid showed a greater concentration gradient.
Melting heat transfer and MHD boundary layer fluid flow over a moving surface with radiation effects B. Shashidar Reddy, K. Saritha Aip Conference Proceedings, 2024 The goal of the current work is to better understand how heat transmission originating from a hot, electrically conductive fluid across a moving surface is affected by radiation and melting. The flow problem is converted into linked nonlinear ordinary differential equations by means of the relevant transformations. In the early stage, momentum equation is linearized using Bellman technique of quasi linearization and later Finite difference scheme is utilized to solve numerically. The impacts of different flow parameters are depicted graphically using representative data for velocity and temperature profiles. The momentum boundary layer is influenced by moving parameters to grow. Melting has the effect of lowering the fluid's temperature in the boundary layer.
Mechanisms of Diffusion Thermo and Thermal Diffusion on MHD Mixed Convection Flow of Casson Fluid over a Vertical Cone with Porous Material in the Presence of Thermophoresis and a Brownian Motion Ravikiran Chintalapudi, Halesh Koti, B Shashidar Reddy, K Saritha Journal of Advanced Research in Numerical Heat Transfer, 2024 In this present article, we analyzed the Effects of Diffusion thermo and Thermal Diffusion on magnetohydrodynamic (MHD) mixed convection flow for Casson nanofluid is deliberated a vertical cone with porous material. The modeled equations are transformed into a set of non-linear ODEs by employing similar transformable variables. These equations are then solved numerically using the shooting method, through the fourth-order Runge–Kutta integration procedure. Effects of some prominent physical parameters, such as diffusion thermo, Prandtl number, thermophoresis parameter, and magnetic parameter on the velocity, temperature, and concentration profiles are discussed graphically and numerically. Numerical calculations and graphs are used to illustrate the important features of the solution on fluid flow velocity, heat, and mass transfer characteristics under different quantities of parametric circumstances entering into the problem. Moreover, we computed the physical variables such as the coefficient of shear stress, rate of heat, and mass transfer. To establish the veracity of our present results, we compared them to previously published research and found substantial concordance.
MHD Hybrid Nano Liquid Permeable Stretching Sheet with Radiation Heat Transfer Enhancement Effect Garishe Vijaya Lakshmi, Wuriti Sridhar, Saritha Kallu, Srinivasa Rao Talagadadevi Passer Journal of Basic and Applied Sciences, 2023 The current study describes a novel type of hybrid nanofluid that can improve heat transfer rate. The hybrid nanofluid has numerous uses in heat transmission, including medical, transportation
Combined impact of radiation and chemical reaction on MHD hyperbolic tangent nanofluid boundary layer flow past a stretching sheet I. Athal, Byeon Haewon, A. Sasikala, B. Narsimha Reddy, Vediyappan Govindan, P. Maddileti, K. Saritha, B. Shashidar Reddy, S. Rajakumari, Jagadish V. Tawade, Nissren Tamam, Barno Sayfutdinovna Abdullaeva, Jasgurpreetsingh Chohan, Raghawendra Mishra Modern Physics Letters B, 2023 The aim of this study is to investigate the effects of thermal radiation and chemical reactions on magnetohydrodynamic hyperbolic tangent liquid, which includes nanoparticles on a stretched surface while taking into account Brownian motion and thermophoresis. The nonlinear partial differential equations governing the system are converted into nonlinear ordinary differential equations through suitable similarity transformations. The focus of the study is to elucidate important engineering concepts such as skin friction, Sherwood number, and heat transfer, as well as to understand the effects of various expressions on the different profiles. The Keller-box approach, a sophisticated numerical tool, is used to get the numerical answers to the current enquiry. The generated findings are extensively tested for correctness and dependability. The findings of this study might have far-reaching ramifications for a variety of technical applications, including heat exchangers, chemical reactors, and thermal management systems.The results show that the rate of mass transfer rises with the increment in the factors of chemical reaction, thermal radiation, nanoparticles volume, and Brownian motion.
Impact of chemical reaction on mass transfer and melting heat transfer of porous mhd casson fluid flow B. S. Reddy, K. Saritha, J. Madhu Journal of Mathematical and Computational Science, 2021 Melting and chemical reaction impacts on heat and mass transfer of MHD Casson fluid flow over a porous stretching surface is examined numerically in this article. The governing partial differential equations are converted by using adequate transformations and the resulting ordinary differential equations are solved numerically using finite difference scheme along with Thomas algorithm. The graphical illustrations are presented for velocity, temperature and concentration distributions. Also Skin friction, Nusselt number and Sherwood number are elucidated for chosen values of various parameters. To validate the numerical method employed, the present results are compared with the existing literature and found to be in good agreement.
Combined effects of soret and dufour on MHD flow of a power-law fluid over flat plate in slip flow rigime K. Saritha, M.N. Rajasekhar, B.S. Reddy International Journal of Applied Mechanics and Engineering, 2018 A numerical model is developed to study the Soret and Dufour effects on MHD boundary layer flow of a power-law fluid over a flat plate with velocity, thermal and solutal slip boundary conditions. The governing equations for momentum, energy and mass are transformed to a set of non-linear coupled ordinary differential equations by using similarity transformations. These non-linear ordinary differential equations are first linearized using a quasi-linearization technique and then solved numerically based on the implicit finite difference scheme over the entire range of physical parameters with appropriate boundary conditions. The influence of various governing parameters along with velocity, thermal and mass slip parameters on velocity, temperature and concentration fields are examined graphically. Also, the effects of slip parameters, the Soret and Dufour number on the skin friction, Nusselt number and Sherwood number are studied. Results show that the increase in the Soret number leads to a decrease in the temperature distribution and to an increase in concentration fields.
Radiation effects on MHD non-newtonian power-law fluid past over a non-linearly stretching surface with viscous dissipation International Journal of Applied Engineering Research, 2016
