article · Processes
This computational study models three-dimensional magnetohydrodynamic rotational flow and heat transmission across an expanding surface. Using water as a base fluid, the simulation compares the thermal and hydrodynamic performance of silver and gold nanoparticles within the Tiwari and Das framework. Nonlinear thermal radiation effects are incorporated into the governing energy equations, which are converted into a self-similar mathematical system and solved numerically. The resulting fluid dynamics are governed by both surface stretching and rotational motion. Analysis shows that variations in velocity components relative to nanoparticle volume fractions are non-monotonic, while velocity profiles exhibit a parabolic distribution. Furthermore, the evaluation establishes that silver-water nanofluids achieve a higher heat transfer constant than gold-water nanofluids under identical conditions. The work also maps how physical parameters, including skin friction and heat flux rates, respond along the stretching surface boundary.
Understanding how metallic nanoparticles alter fluid dynamics and thermal radiation in rotating environments is valuable for developing enhanced cooling mechanisms. Comparing silver and gold additives provides specific quantitative data on heat transfer efficiency, helping researchers identify which materials best optimise heat dissipation under magnetic and rotational conditions.
This is early-stage computational modelling that investigates theoretical fluid behaviour rather than physical hardware. The insights could eventually inform engineers developing specialised thermal management systems or nanofluid coolants, but the abstract does not indicate an immediate application pathway or industry testing.
AI-generated from the published abstract. Always read the original work before citing.
This comparative study inspects the MHD three-dimensional revolving flow and temperature transmission of a radiative stretching surface. The flow of nanofluid is modeled using the Tiwari and Das model. Water is the base fluid, and the nanoparticles are composed of two different types of nanoparticle, i.e., gold and silver (Au and Ag). The non-radiative heat flow notion is examined in a temperature field that results in a nonlinear energy equation. Conformist transformations are used to generate a self-similar arrangement of the leading differential system. The resulting system has an intriguing temperature ratio constraint, which shows whether the flow has a little or significant temperature differential. By using a powerful mathematical technique, numerical results are obtained. The solutions are influenced by both stretching and rotation. The difference in velocity constituents with the elements’ volume fraction is non-monotonic. Results for the rotating nanofluid flow and heat transfer properties for both types of nanoparticles are highlighted with graphs. The impact of physical concentrations, such as heat flux rates and skin friction constants, are examined at the linear extending surface and clarified graphically. Ag-water nanofluid has a high-temperature transfer constant compared to Au-water nanofluid. The velocity profile was also discovered to have a parabolic distribution shape.
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DOI: 10.3390/pr9081453
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