article · Numerical Heat Transfer Part B Fundamentals
This research examines the heat transfer characteristics of motile microorganisms swimming through a bio-convection Casson nanofluid across a rotating circular disk. The model incorporates the effects of dissipative heat generated by microorganism movement, thermal radiation, and chemical reactions, alongside cross-diffusive properties resulting from Brownian motion and thermophoresis. A system of coupled nonlinear non-dimensional equations was formed through similarity transformations and solved using a spectral quasi-linearization method. The findings demonstrate that increasing the non-Newtonian Casson parameter leads to a deceleration in fluid velocity. Conversely, heat transport within the system is enhanced by the presence of thermal radiation and higher values of the Eckert number coupling parameter. The numerical analysis provides detailed insights into fluid and thermal behaviours under diverse operating parameters.
Understanding how microscopic organisms influence heat and fluid dynamics helps researchers design more effective biomedical and cooling technologies. By modelling how microscopic swimming, thermal radiation, and fluid resistance interact over moving surfaces, this work aids the theoretical design of specialised microscale devices, such as targeted drug delivery systems and enhanced thermal management platforms.
This theoretical study provides foundational numerical data that could eventually support the design of biomedical nanofluidic devices for targeted drug delivery and advanced cooling systems for thermal management. Relevant users include bioengineers and fluid systems designers. Operating at an early theoretical modelling stage, the work requires physical experimental testing and prototype development before practical commercial deployment can occur.
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The ability of motile microorganisms is used to design of biomedical nanofluidic devices that utilize for targeted drug delivery, to influence heat transfer in nanofluids that are applied to the optimization of cooling system, in biotechnological processes where precise control over fluid flow, etc. However, based upon the several facts, the current investigation lead to propose the heat transfer characteristic of motile microorganisms swimming in a flow of bio-convection nanofluid over a rotating circular disk. The proposed study explores the impacts of dissipative heat generated by the movement of microorganisms, thermal radiation, and chemical reactions. The impact of cross-diffusive property organized by the implementation of Brownian motion and thermophorsis energies the flow phenomena of bio-convection. The set of coupled nonlinear system of non-dimensional equations is obtained by the implementation of similarity rules and further quasi-linearization method is utilized for the solution of this system. The characteristics of diversified parameters are presented through graphs with the variation of the proposed factors within their certain limitations and thee discuss briefly. Further, the important outcomes of the study are presented as; the fluid velocity decelerates due to the enhanced non-Newtonian Casson parameter, whereas the radiating heat for the inclusion of thermal radiation and coupling parameter, that is, Eckert number boosts up the heat transport phenomena.
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DOI: 10.1080/10407790.2024.2352857
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