The heat transfer and friction characteristics of a fully developed turbulent air flow in a square channel with 45° inclined ribs on one, two, or four walls were experimentally investigated. Tests were performed for Reynolds numbers (Re) ranging from 7600 to 24 900, a pitch-to-rib-height ratio (P/e) of 8.0, and a rib-height-to-channel hydraulic diameter ratio (e/Dh) of 0.0667. Either two opposite walls or all four walls in the channel were heated.
|Number of pages||5|
|Journal||Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering|
|Publication status||Published - Nov 2007|
- Friction roughness function
- Heat transfer roughness function
- Ribbed square channel
- Variable number of ribbed walls