Dissipative Heat Impact on the Non‐Newtonian Walter's B Nanoliquid Over an Elongating Surface Through a Permeable Medium

ABSTRACT The utilisation of viscoelastic Walter's B nanoliquid in engineering and biomedical applications gained substantial attention because of its ability to provide real‐time fluid behaviour, particularly in the heat flow mechanism. In particular, the flow of viscoelastic fluid over an elongating surface is useful in polymer processing and biomedical flows. The integration of dissipative heat combined with radiant heat and melting heat transfer in these models shows enhanced control over thermal gradients, chemical reaction species, etc. Moreover, the insertion of homogenous and heterogeneous chemical reactions augments the applicability of simulating catalysed surface reactions, which control the release of the drug. Further, the impact of Brownian motion combined with thermophoresis portrays a significant characteristic in enhancing the fluid properties. The increased governing parameters lead to nonlinearity, and coupled effects of melting are highly sensitive; therefore, the model is handled numerically employing a shooting‐based Runge–Kutta technique. The assumptions involved in various systems are analysed graphically following the validation of the result in a particular case.