Abstract
An experimental investigation was conducted in order to study heat transfer between a vertical free surface jet and a horizontal stainless steel heated plate. The jet was composed of water-SiO2 nanofluid with an average particle size of 8 nm delivered from a fixed nozzle diameter of 6 mm. The results covered a wide range of jet Reynolds number up to 40000, ten nanoparticle volume fractions (0% ≤ φ ≤ 8.5%), five jet aspect ratios (z/d = 0.5, 1, 2, 4 and 8) and plate radius to jet diameter ratio (r/d) up to 12.5. The experimental results illustrated that the enhancement of the average Nusselt number increases with the volume fraction and Reynolds number. Therefore, the volume fraction can significantly provide a heat transfer enhancement of the average Nusselt number up to 80% for a volume fraction of 8.5% compared to pure water. Conversely, the effect of nozzle to plate aspect ratio (z/d) is not significant. Finally, a new heat transfer correlation has been proposed for the average Nusselt number as a function of Peclet number, a nanoparticle volume fraction, a plate to jet diameter ratio and a nozzle to plate aspect ratio.
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.
