Farooq, UmarBasit, Muhammad AbdulNoreen, SobiaFatima, NahidAlhushaybari, AbdullahEl Din, Sayed M.Imran, Muhammad2024-12-242024-12-2420242090-44792090-4495https://doi.org/10.1016/j.asej.2023.102316https://hdl.handle.net/20.500.12604/6359Aims: In the current study, the flow of Carreau nano-fluid through the stretched cylinder is subject to the influences of activation energy and heat source/sink with the Cattaneo-Christov heat fluxes model studied. Applications in recent times are the purpose of better heat and mass transport nanoparticles used for this purpose because of their better thermal conductivity than normal fluids. Nanofluids are used in medicines like agricultural sprays and with time it is used in the microprocessor for cooling and also used in the refrigeration industry as coolant. Methodology: The mathematical model was developed by taking these things into account and getting a model of nonlinear partial differential equations for administering this problem. These governing equations system modified into a system of ODE by utilizing appropriate similarity transform. For numerical computation or simulation, the 'bvp4c' built-in package of MATLAB is used to implement the shooting technique. Smooth implementation took place by introducing a set of variables to make our system dimensionless. Results/Conclusion: Graphical representation depicts the profiles of concentration, velocity, thermal, and microorganism density, and the impacts of various modeling quantities on these profiles are also discussed and elaborated. In tabular analysis, a contrast of computed outcomes with the previously available outcomes shows the accuracy of our computed results at different values of physical parameters. The presence of motile microorganisms improved the heat transfer rate. (c) 2023 THE AUTHORS. Published by Elsevier BV on behalf of Faculty of Engineering, Ain Shams University. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/ by-nc-nd/4.0/).eninfo:eu-repo/semantics/openAccessCarreau nanofluidCattaneo-Christov heat and mass fluxHeat source/sinkBioconvectionCylinderThermal diffusivityActivation energyShooting schemeBvp4cMATLABArticle151Q1WOS:001128608600001Q12-s2.0-8516044661910.1016/j.asej.2023.102316