Abstract

Taking into account the effect of constant convective thermal and mass boundary conditions, we present numerical solution of the 2-D laminar g-jitter mixed convective boundary layer flow of water-based nanofluids. The governing transport equations are converted into non-similar equations using suitable transformations, before being solved numerically by an implicit finite difference method with quasi-linearization technique. The skin friction decreases with time, buoyancy ratio, and thermophoresis parameters while it increases with frequency, mixed convection and Brownian motion parameters. Heat transfer rate decreases with time, Brownian motion, thermophoresis and diffusion-convection parameters while it increases with the Reynolds number, frequency, mixed convection, buoyancy ratio and conduction-convection parameters. Mass transfer rate decreases with time, frequency, thermophoresis, conduction-convection parameters while it increases with mixed convection, buoyancy ratio, diffusion-convection and Brownian motion parameters. To the best of our knowledge, this is the first paper on this topic and hence the results are new. We believe that the results will be useful in designing and operating thermal fluids systems for space materials processing. Special cases of the results have been compared with published results and an excellent agreement is found.

Highlights

  • The presence of temperature/concentration gradients and gravitational field yield convective flows in non-porous and porous media (Uddin et al [1])

  • It would seem that mixed convective g-jitter flow in porous media with constant thermal and mass convective boundary conditions has not communicated in the literature which motivates the present analysis

  • 0.5038 0.6430 0.7539 1.2551 an increase in the Brownian motion parameter and the opposite trend is noticed for the case of the thermophoresis parameter

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Summary

Introduction

The presence of temperature/concentration gradients and gravitational field yield convective flows in non-porous and porous media (Uddin et al [1]). It would seem that mixed convective g-jitter flow in porous media with constant thermal and mass convective boundary conditions has not communicated in the literature which motivates the present analysis.

Results
Conclusion
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