Abstract
The influence of surface roughness on the cross-flow through a staggered tube bank is investigated in the range of Reynolds numbers 4 ×104 <Re, < 107. At two roughness conditions the total pressure drop, the static pressure distribution and the local skin friction were measured. In the subcritical flow regime no effect of surface roughness on the pressure drop could be observed. Exceeding a critical Reynolds number, which itself is depending on surface roughness, the curve splits in terms of surface roughness parameterks/D. In the transcritical range the flow becomes independent of the tube diameterD, while the roughness heightks is the new characteristic length. By means of the local pressure and skin friction distribution the boundary layer behaviour was studied. Particularly the boundary layer separation and the friction forces were considered. The experiments are completed by investigations on the flow past a single row of tubes.
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.
