This study explores the catalytic behavior of a tetra-hybrid nanofluid as it flows through a porous channel under the effect of a magnetic field. Heat transfer is modeled using a quadratic thermal radiative heat flux, while mass transfer is studied by incorporating both surface-catalyzed and homogeneous–heterogeneous reactions. The tetra-hybrid nanofluid consists of silicon carbide (SiC), titanium carbide (TiC), titanium oxide (TiO₂), and copper oxide (CuO) dispersed in a water (H₂O) base fluid. The governing equations are transformed into ordinary differential equations (ODEs) and solved numerically using the bvp4c method. The findings show that increasing the surface-catalyzed reaction parameter boosts the concentration distribution, while higher nanoparticle volume fractions lead to an enhanced heat transfer rate in the flow.

Keywords: Tetra hybrid nanofluid; Absorbent channel; Magnetic field; Surface catalyzed reactions; Quadratic thermal radiative heat flux; Carbides and Oxides.

Dr. Muhammad Ramzan is working as a Professor at Bahria University, Islamabad, Pakistan. He has an experience of 27 years of teaching and research. He obtained his Ph.D. (Applied Mathematics) from Quaid-i-Azam University, Islamabad, in 2010. He is the pioneer to start MS/Ph.D.  Mathematics) programs at Bahria University, Islamabad Campus. He has published 183 ISI Indexed papers in internationally reputed Journals. He was a visiting Professor at Jiangsu University, China, and Sejong University, South Korea. At present, he is a visiting Professor at the Beijing University of Civil Engineering and Architecture, Beijing, China. He has also authored a book. His name was included in the list of the top 2% scientists of in the world in an independent study conducted by a group of scientists from Stanford University, USA, in the years 2020, 2021, and 2022. His paper received the “Best Paper Award” at the 7th International Conference on Advanced Technologies (ICAT), Antalya, Turkey, April 28-May 1, (2018).  He was also declared “Best Presenter” at the 4th international conference on Technology, Engineering, and Science (ICONTES), Kuala Lumpur, Malaysia, August 5-6, (2017). He was the Keynote Speaker at the 8th International Conference and Workshop on Basic and Applied Sciences (ICOWOBAS), Indonesia, August 25-26, (2021), 9th International Conference of Mechanical Engineering, Material Science, and Civil Engineering, Xi’an, China, December 7, (2021), and Guest Speaker at Virtual Summer School, Beijing University of Civil Engineering and Architecture, Beijing, China. He is a recipient of the HEC Indigenous Scholarship for Ph.D. studies. He also won certain HEC research projects. Three Ph.D. and twenty-one MS students have completed their thesis under his supervision. One Ph.D. is still with him and she is in the research phase.