Abstract
Both qualitative flow visualization as well as laser holographic interferometry and quantitative temperature measurement are presented for natural convection of air layers in vertical channels (channels A and B) with asymmetrically discrete heated ribs wherein the opposing flow is in channel A and the assisting flow is in channel B. Based on the analyses of the photographs and interferograms, it is suggested that the turbulent flow should be expected when the local modified Rayleigh number is in the range of 1.29 × 10 7-9.43 × 10 9 for both channels. The heat transfer data and flow visualization photographs indicate that the present rib geometry and the stratification are two major reasons influencing the temperature of the heated ribs. Average Nusselt number correlations are established in the form ▪ for channels A and B, respectively. The power dependence strongly indicates that the flow in channel A is turbulent while the flow channel B is laminar.
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.
