Unsteady Free Convection Flow of Nanofluid with Dissipation Effect over a Non-Isothermal Vertical Cone

Authors

  • Hajar Hanafi Department of Mathematical Sciences, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor, Malaysia
  • Sharidan Shafie Department of Mathematical Sciences, Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor, Malaysia
  • Imran Ullah Department of Basic Sciences and Humanities, College of Civil Engineering, National University of Sciences and Technology, 44000 Islamabad, Pakistan

Keywords:

vertical cone, nanofluids, viscous dissipation

Abstract

This paper investigated unsteady free convection flow of nanofluid with dissipation effect over a non-isothermal vertical cone. The dimensional governing equations that consists of continuity, energy and momentum equations are reduced by using appropriate dimensionless variables along with variable wall temperature as its initial and boundary conditions. The case when water is the base fluid has been considered and the effects of the solid volume fraction on the flow and heat transfer characteristics are determined for Silver (Ag), Copper (Cu), Alumina (Al2O3) and Titanium oxide (TiO2) nanofluids. The purpose of the study is to investigate numerically the mathematical model by using the Crank-Nicolson method. The discretization equations were computed, and numerical results were plotted using MATLAB software. It has been shown that when the nanoparticles volume fraction increases, the NuX increases and the velocity profile decreases. Moreover, for Silver(Ag), Copper(Cu) and Titanium oxide (TiO2) nanoparticles, the thermal boundary layer decreases at first but later started to increase at certain values as the nanoparticles volume fraction increases. However, for Alumina (Al2O3) nanoparticles, the temperature profile increases as the nanoparticles volume fraction increases. It has also been found in this problem that the Alumina (Al2O3) nanoparticles have the highest heating performance while Silver (Ag) nanoparticles have the highest cooling performance.

Published

2021-01-06

How to Cite

Hanafi, H. ., Shafie, S. ., & Ullah, I. . (2021). Unsteady Free Convection Flow of Nanofluid with Dissipation Effect over a Non-Isothermal Vertical Cone. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 75(1), 1–11. Retrieved from https://www.akademiabaru.com/submit/index.php/arfmts/article/view/3067

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