Computational study on heat and mass transfer in viscoelastic fluid with multiscale nanoparticles

Abstract Simultaneous heat and mass transport in fluid involves several engineering applications. Therefore, simultaneous transfer of heat and mass in second‐grade fluid is modeled under consideration of three types of nanoparticles (ternary, hybrid, and mono). and are taken as ternary, and are taken as hybrid, and is taken as mono‐nanoparticles. The behavior of emergent parameters on temperature and quantities of engineering relevance (wall heat and mass fluxes) is simulated using bvp4c. The results are tested to be accurate against published data. Joule heating affects the thermal performance of the working fluid adversely. Thus, for an optimized heat transfer fluid, it should not produce heat in the ohmic dissipation process. The working fluid should not be heat‐generating. Otherwise, the thermal efficiency of the fluid will be reduced due to a rise in the temperature of the fluid. However, heat absorption by the fluid is a favorable characteristic of the working fluid. The predictions perceived from the simulations have unveiled that flow velocity increases when the second‐grade parameter is increased. Thus, wall momentum diffuses into a second‐grade fluid than into a Newtonian fluid. Thus, the momentum boundary layer thickness in second‐grade fluid is wider than in the Newtonian fluid.