Analysis of activation energy in Couette-Poiseuille flow of nanofluid in the presence of chemical reaction and convective boundary conditions

• Published in: Results in physics Vol. 8; pp. 502 - 512
• Main Authors: Zeeshan, A., Shehzad, N., Ellahi, R.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-03-2018; Elsevier
• Subjects: Activation energy; Chemical reaction; Convective boundary conditions; Couette-Poiseuille flow; Nanofluid; Thermal radiation; Couette-Poiseuille flow; Convective boundary conditions; Thermal radiation; Chemical reaction; Nanofluid; Activation energy
• ISSN: 2211-3797; 2211-3797
• DOI: 10.1016/j.rinp.2017.12.024

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•Activation energy with chemical reaction is taken in Couette-Poiseuille flow.•Heat and mass transfer analysis with convective boundary conditions are discussed.•Highly nonlinear governing equations are tackled via HAM.•Magnetic and radiative influence on energy distribution are determined.
The motivation of the current article is to explore the energy activation in MHD radiative Couette-Poiseuille flow nanofluid in horizontal channel with convective boundary conditions. The mathematical model of Buongiorno [1] effectively describes the current flow analysis. Additionally, the impact of chemical reaction is also taken in account. The governing flow equations are simplified with the help of boundary layer approximations. Non-linear coupled equations for momentum, energy and mass transfer are tackled with analytical (HAM) technique. The influence of dimensionless convergence parameter like Brownian motion parameter, radiation parameter, buoyancy ratio parameter, dimensionless activation energy, thermophoresis parameter, temperature difference parameter, dimensionless reaction rate, Schmidt number, Brinkman number, Biot number and convection diffusion parameter on velocity, temperature and concentration profiles are discussed graphically and in tabular form. From the results, it is elaborate that the nanoparticle concentration is directly proportional to the chemical reaction with activation energy and the performance of Brownian motion on nanoparticle concentration gives reverse pattern to that of thermophoresis parameter.