Abstract
Role of activation energy, nanoparticles and gyrotactic microorganisms with bioconvection has a great significance in geothermal engineering, biotechnology, oil reservoir, heat exchanger, chemical engineering, food processing, biosensors, water emulsion and cooling devices. This study communicates a numerical exploration regarding the activation energy and bioconvection ramifications in the development of thermal extrusion of chemically reactive Casson nanoliquid over a permeable cylinder under the repercussions of gyrotactic microorganism and viscous dissipation. Additionally, reverberations of activation energy and nonlinear radiations are enumerated. Revised novel nanofluid model is taken into consideration. Basic PDEs of chosen investigation are developed by deploying boundary layer theory and redeveloped into nonlinear coupled ODEs by employing relevant transformation. Numerical solutions are established through Fehlberg RK45. For the validation of present exploration, a comparison assessment is effectuated and vouchsafed in excellent agreement. The outcomes of this novel study reveal that microorganism density number is deprecated for higher approximation of Peclet number and microorganism difference parameter but opposite behavior can be perceived enriched Eckert number. Further, wall heat flux is disparaged due to exaltion of bioconvection Rayleigh number.