Numerical analysis of thermal conductive hybrid nanofluid flow over the surface of a wavy spinning disk

Ali Ahmadian,Muhammad Bilal,Muhammad Altaf Khan,Muhammad Imran Asjad

doi:10.1038/s41598-020-75905-w

Abstract

A three dimensional (3D) numerical solution of unsteady, Ag-MgO hybrid nanoliquid flow with heat and mass transmission caused by upward/downward moving of wavy spinning disk has been scrutinized. The magnetic field has been also considered. The hybrid nanoliquid has been synthesized in the presence of Ag-MgO nanoparticles. The purpose of the study is to improve the rate of thermal energy transmission for several industrial purposes. The wavy rotating surface increases the heat transmission rate up to 15%, comparatively to the flat surface. The subsequent arrangement of modeled equations is diminished into dimensionless differential equation. The obtained system of equations is further analytically expounded via Homotopy analysis method HAM and the numerical Parametric continuation method (PCM) method has been used for the comparison of the outcomes. The results are graphically presented and discussed. It has been presumed that the geometry of spinning disk positively affects the velocity and thermal energy transmission. The addition of hybrid nanoparticles (silver and magnesium-oxide) significantly improved thermal property of carrier fluid. It uses is more efficacious to overcome low energy transmission. Such as, it provides improvement in thermal performance of carrier fluid, which play important role in power generation, hyperthermia, micro fabrication, air conditioning and metallurgical field.

Highlights

A three dimensional (3D) numerical solution of unsteady, Ag-MgO hybrid nanoliquid flow with heat and mass transmission caused by upward/downward moving of wavy spinning disk has been scrutinized
The numerical results of the system of differential equations has been acquire through Parametric continuation method (PCM), while for comparison and validity of results and to get analytical output, HAM technique has been applied
The wavy rotating surface increases the heat transmission rate up to 15%, comparatively to flat s urface32

Summary

Introduction

A three dimensional (3D) numerical solution of unsteady, Ag-MgO hybrid nanoliquid flow with heat and mass transmission caused by upward/downward moving of wavy spinning disk has been scrutinized. It uses is more efficacious to overcome low energy transmission Such as, it provides improvement in thermal performance of carrier fluid, which play important role in power generation, hyperthermia, micro fabrication, air conditioning and metallurgical field. Dimensionless temperature σ Thermal conductivity φ1 = φAg Volume fraction of silver khnf Thermal conductivity ρs Silver specific heat capacity ρhnf Hybrid Nanofluid density Ag Silver PCM Parametric continuation method u, v, w Velocity component Tw Temperature of the Surface β Permeability parameter. Velocity (angular) of disk r s−1 φα 2 = φM gO TMhaegrnmeasiludmiffouxsiivdietyvomlu2mse−1fraction ρs Magnesium oxide specific heat capacity νhnf Nanofluid kinematic viscosity MgO Magnesium oxide HAM Homotopy analysis method

Objectives

Findings

Discussion

Conclusion