Abstract
The turbulent flow structure over a repeated-rib geometry rough-walled surface was investigated in connection with a two dimensional square rib roughness which was set on the internal surface of a rectangular channel. The upper plate with ribs of the same pitch can be shifted to arbitrary positions. Reynolds number of duct flow was set to 2.0×104, which was similar to the condition of practical heat exchangers. Flow measurements were performed using a compact fiber laser Doppler velocimeter (LDV) probe. The results of the detailed flow measurements indicated that a recirculating flow existed behind the rib on symmetric and staggered rib geometries. A remarkable large peak value of Reynolds shear stress was observed behind the rib on the staggered rib geometry.
| Original language | English |
|---|---|
| Pages (from-to) | 191-196 |
| Number of pages | 6 |
| Journal | American Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD |
| Volume | 107 |
| Publication status | Published - 1989 |
| Event | Heat Transfer in Convective Flows - Philadelphia, PA, USA Duration: 1989 Aug 6 → 1989 Aug 9 |
ASJC Scopus subject areas
- Mechanical Engineering
- Fluid Flow and Transfer Processes