Abstract
The hydrodynamics and heat transfer through isothermal tube entrance region was investigated numerically in the presence of Nano-particles. The study was performed by a computer home-code. This code is based on finite volume method. The effects of Reynolds number and Nano-particle concentration on viscous boundary layer thickness, shear stress, coefficient of friction, thermal boundary layer thickness and Nusselt number was presented. Through the study Reynolds number varies from 500 to 2000 and Nano-particle concentration varied from 0 to 10%. Three different Nano-particles Al2O3, TiO2 and Cu were studied. While the Prandtl number for the base fluid was kept constant at 7 referring to water. In general, the results showed that an enhancement in Nusselt number by adding Nano-particles especially by using Cu Nano-particles. The maximum increase in Nusselt number reached 20.5% at Re = 1000, Nano-particle concentration = 10% for copper Nano-particle. Both average coefficient of friction and average Nusselt number were correlated in terms of Reynolds number, Nano-particle concentration, dimensionless entry length and Nano-particle type. Some of the results were compared with published data, a good agreement was found.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
