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The analysis in this study focuses on comparing Yamada-Ota and Xue models for SWCNT-MWCNT/H2O hybrid nanofluid flow with motile gyrotactic microorganisms over an exponentially stretching sheet incorporating chemical reaction and thermal radiation. By employing similarity transformations, the flow equations are solved utilizing MATLAB's "bvp4c" solver to perform numerical analysis and obtain solutions. The analysis conducted through graphical investigation, involves the examination of the impact of numerous parameters and their influence on the distributions of momentum, thermal, nanoparticles concentration, motile microorganisms' density, drag coefficient, heat, and mass transfer. The observations show that with viscous dissipation parameter, temperature ratio parameter, radiation parameter, and Brownian motion parameter rise, there is a reduction in the density of motile microorganisms and concentration profiles in both the Yamada-Ota and Xue models. Moreover, the Yamada-Ota model demonstrates higher temperature profiles compared to the Xue models due to Eckert number, radiation parameter, heat generation/absorption parameter, temperature ratio, and thermophoresis parameter.
Ashish Mishra (Wed,) studied this question.