Abstract.
Analysis of irreversibility in flow by a stretchable surface has gained much consideration in recent years. Entropy optimization properly computes the second law thermodynamic irreversibilities. Therefore, deterioration of entropy proficiency results in a more useful energy transport process. In this article, a physical aspect of irreversibility in radiative flow of viscous material with quartic autocatalysis chemical reaction is addressed. The flow is discussed between two stretchable rotating disks. Heat transfer occurring in this physical problem is modelled through thermal radiation, Joule heating and viscous dissipation. This is the first time the concept of homogeneous-heterogeneous reactions has been studied with entropy generation. The nonlinear flow expressions are made dimensionless. The obtained equations are then tackled through the homotopy concept. The analysis discloses that the radiation parameter and Eckert number play a vital role in the enhancement of temperature field. The tangential velocity decreases versus the magnetic parameter. The radial component of velocity boosts close to lower disks and it decreases near the upper disks versus the Reynolds number. The variations in the Nusselt number and skin friction are presented graphically with various emerging variables. It is noticed that entropy rate can be controlled by minimizing the impact of Brinkman and Reynolds numbers.
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Hayat, T., Javed, S., Ijaz Khan, M. et al. Physical aspects of irreversibility in radiative flow of viscous material with cubic autocatalysis chemical reaction. Eur. Phys. J. Plus 134, 172 (2019). https://doi.org/10.1140/epjp/i2019-12564-7
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DOI: https://doi.org/10.1140/epjp/i2019-12564-7