期刊
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
卷 143, 期 2, 页码 1081-1095出版社
SPRINGER
DOI: 10.1007/s10973-020-09347-x
关键词
Mixture fluid; Hybrid nanoparticles; Magnetohydrodynamics; Thermal radiation
This study investigates the flow of a mixture of water and ethylene glycol with hybrid nanoparticles over a vertical stretching cylinder, considering the effects of magnetic field, thermal radiation, viscous dissipation, and natural convection. Novelty lies in the exploration of different shape factors and their impact on dimensionless velocity and temperature profiles for single and hybrid nanofluids. Results show significant differences in velocity and temperature profiles based on nanoparticle shape and external parameters such as magnetic field and radiation.
In this study, flow of a mixture of water and ethylene glycol (50-50%) with hybrid nanoparticles (MWCNT-Ag) over a vertical stretching cylinder has been investigated. In this research, the fluid passes through a porous media, while a magnetic field has been applied to the system. Furthermore, the effects of thermal radiation, viscous dissipation, and natural convection have been studied. As a novelty, the effects of different shape factors have been investigated. In the first step, the governing equations are extracted from partial differential equations and then converted to ordinary differential equations (ODE) using the similarity solution. In the next step, the fifth-order Runge-Kutta method has been used to solve the related ODEs. The effects of parameters such as magnetic field, radiation parameter, porosity parameter, nanofluid volume fraction, and nanofluid shape factor on dimensionless velocity and temperature profile have been presented for single and hybrid nanofluid. The results showed that at eta 5 for hybrid nanoparticles the shape factors lamina and spherical have the largest difference; lamina is smaller by 6%, also the results demonstrated that at eta with increasing Ha, the radial velocity reduced 9.68% for hybrid nanoparticles.
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