Heat transfer through temperature dependent viscosity hybrid nanofluid subject to homogeneous-heterogeneous reactions and melting condition: A comparative study

• Published in: Physica scripta Vol. 96; no. 1; pp. 15210 - 15227
• Main Author: Hussain, Zakir
• Format: Journal Article
• Language: English
• Published: IOP Publishing 01.01.2021
• Subjects: Heat generation/absorption; Homogeneous-heterogeneous reactions; Hybrid nanofluid; Melting heat effect; Thermal radiation; Variable viscosity
• ISSN: 0031-8949; 1402-4896; 1402-4896
• DOI: 10.1088/1402-4896/abc5ef

Present analysis explores homogeneous-heterogeneous reactions in hybrid nanofluid flow under the influences of varying viscosity (depending on temperature), mixed convection and magnetohydrodynamics. The flow of fluid is caused by stretchable cylinder. Heat transfer mechanism has been examined through viscous dissipation, heat source and thermal radiation. Furthermore, melting boundary condition has been used to inspect heat features. The study has employed simple isothermal model to regulate solute concentration. It is assumed that the base liquid is essentially composed of homogenous mixture of MoS2 nano-particles. Comparison of nanofluid and hybrid nanofluid has been made for velocity, temperature, concentration, skin friction and Nusselt number against shape factors and embedded variables. The study has opted cylindrical coordinates for mathematical development. The obtained boundary layer problems for stretching cylinder are tackled by bvp4c matlab solver. Findings of the study reveal that thermal boundary layer thickness enhances for higher melting variable. Flow and concentration distributions are noted more prominent in case of hybrid nanolqiud when compared with nanofluid while in case of temperature reverse trend holds. Moreover, higher volume fraction enhances skin friction and Nusselt number for both type fluids. Drag coefficient and heat transfer at surface of cylinder increase for nanofluid than hybrid nanofluid when larger curvature variable is dealt. This study shows that heat transfer enhances against larger melting and temperature depending viscosity parameters. Drag coefficient and heat transfer are maximum by adding blades nanoparicles (8.6) in base liquid for both fluids when comparison is made with other nanoparticles.