Abstract
Buoyancy-aided mixed convection experiments were performed in a vertical rectangular channel heated on one side. Based on the heat/mass transfer analogy, mass transfer experiments were performed using a copper electroplating system. The Reynolds number ranged from 985 to 25,450 at a fixed Grashof number of 1.01 × 1010. We derived a local turbulent forced convection correlation following Petukhov et al. and Gnielinski. The heat transfer of turbulent mixed convective flow exhibited impairment and enhancement compared with the forced convection correlation affected by buoyancy at different axial position. Local heat transfer distributions were non-monotonous; five distinct flow regimes were apparent. Particle image velocimetry (PIV) was used to measure velocity profiles and turbulent shear stress. The effects of buoyancy on velocity profiles, turbulent shear stress, the thickness of the viscous sublayer, and heat transfer were identified.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.