Investigation of mixture fluid suspended by hybrid nanoparticles over vertical cylinder by considering shape factor effect

• Published in: Journal of thermal analysis and calorimetry 2021, Vol.143 (2), p.1081-1095
• Main Authors: Hosseinzadeh, Kh, Asadi, A., Mogharrebi, A. R., Ermia Azari, M., Ganji, D. D.
• Format: Article
• Language: English
• Subjects: Analytical Chemistry; Chemistry; Chemistry and Materials Science; Differential equations; Ethylene glycol; Free convection; Inorganic Chemistry; Investigations; Magnetic fields; Mathematical analysis; Measurement Science and Instrumentation; Nanofluids; Nanoparticles; Ordinary differential equations; Parameters; Partial differential equations; Physical Chemistry; Polymer Sciences; Porosity; Porous media; Radial velocity; Radiation; Runge-Kutta method; Shape effects; Shape factor; Silver; Similarity solutions; Temperature profiles; Thermal radiation; Vertical cylinders
• ISSN: 1388-6150; 1588-2926
• DOI: 10.1007/s10973-020-09347-x

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 η  = 2.5 for hybrid nanoparticles the shape factors lamina and spherical have the largest difference; lamina is smaller by 6%, also the results demonstrated that at η  = 2 with increasing Ha, the radial velocity reduced 9.68% for hybrid nanoparticles.