The practical application of hybrid nanofluid (HNF) aims at enhancing the thermal conductivity of the base fluid. We consider nanoparticles (NPs) and blood as the key components in this phenomenon. As an alternative to the Casson fluid, blood is utilized as the foundation fluid in this scenario. The mixture consists of silver and gold nanoparticles on a stretched porous cylindrical surface all being subjected to a magnetic field, mixed convection, and Joule heating. Additionally,           we discovered the existence of thermal stratification and observed nonlinear thermal radiation. The prime objective of this study is                to effectively convey the characteristics of the liquid, specifically through the utilization of numerical data. The mathematical    framework was developed using partial differential equations (PDEs) and subsequently transformed into ordinary differential equations using appropriate similarity variables. The evaluation of the model was performed using the Keller-Box method. Throughout the solution process, the effects of various physical parameters on the flow depicts have been thoroughly examined and presented in figures and tables. The accuracy of the current simulation is also furnished in tabular format. The findings suggest that the curvature factor plays a crucial role in determining the radius of the cylinder, resulting in more significant effect on temperature as well as on velocity distributions. The thermal configuration of the hybrid nanofluid experienced an increase due to enhanced radiation effect and improved dissipation. It is observed that the magnitude of growth in Nusselt number for escalating estimations of sn, Bu, Pr and R while higher estimations of b, M, po, Ec and st are connected with the contrary tendencies. For  it is noticed that Nusselt number of HNF is increased by 17% when compared to the base fluid. The importance of this research has significant potential in comprehending the behavior of blood under the impression of a magnetic field, thus offers a promising avenue for mitigating certain vascular disorders.

Casson fluid, magnetic field, mixed convection, thermal radiation, Keller-Box solution

Received: June 20, 2024; Revised: November 24, 2024; Accepted: November 29, 2024; Published: January 4, 2025

How to cite this article: P. Ramireddy and K. Jayalakshmi, The impression of thermal stratification and Joule heating on hybrid nanofluid over a porous stretching cylinder, JP Journal of Heat and Mass Transfer 38(1) (2025), 47-76. https://doi.org/10.17654/0973576325003

This Open Access Article is Licensed under Creative Commons Attribution 4.0 International License

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