Role of surface catalyzed reaction in the flow of temperature-dependent viscosity fluid over a rotating disk

Abstract

In many engineering applications, it is important to consider the temperature dependence of a material's properties, such as its viscosity and thermal conductivity. Aiming the same, here, in the existing exploration, viscosity and thermal conductivity are taken as variables instead of constant. This study discusses the flow of a viscous fluid over a rotating disk with a surface catalyst. The homogeneous-heterogeneous reactions are supplemented by surface catalysis that boosts the chemical reaction rate in the minimum possible time. The novelty of the problem is enhanced by the incorporation of the variable diffusion coefficients of both chemical species. The Von Karman transformation is used and the system is scrutinized by the bvp4c function of the MATLAB software. The results are portrayed in the form of illustrations and tables. The outcomes divulged that the mass diffusion rate and wall concentration for the porosity and surface catalyzed parameter show a decreasing behavior.

Keywords:

• Rotating disk
• surface catalyzed chemical reaction
• variable thermal conductivity
• variable thermal diffusivity

Authors’ contribution

M.R. supervised and conceived the idea; S.R. wrote the manuscript; S.K. helped with software work; and K.A.M.A. helped in revising the manuscript.

Disclosure statement

The authors declare no competing interests in this article.

Additional information

Funding

The authors would like to thank the Deanship of Scientific Research at Umm Al-Qura University for supporting this work by Grant Code: (22UQU4310392DSR35).