Abstract
Heat transfer coefficients and pressure drop data were determined experimentally for the turbulent flow in circular ducts equipped with internal transverse ribs, that is, ribs normal to the flow. Both fully developed and entrance region results were obtained. Also, both local and per-cycle average heat transfer results were determined. The naphthalene sublimation technique was employed in the experiments. The effects of rib height, rib spacing, and Reynolds number were investigated. The friction factor is shown to increase with rib height and to decrease with rib spacing in the range investigated. The local heat transfer results revealed, for most cases investigated, that the film coefficient in a cycle increases in the axial direction up to a maximum value. Then it decreases mildly up to a local minimum, increasing from this axial position to the end of the cycle.
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.
