Official Journal of the Asia Oceania Geosciences Society (AOGS)
Table 1 Parameters in the turbulent boundary layers over different rough surfaces
From: Wind tunnel measurements of turbulent boundary layer flows over arrays of ribs and cubes
Rough surfaces | h (× 10−3 m) | w (× 10−3 m) | δ (× 10−3 m) | U∞ (m s−1) | u * (m s−1) | C d (× 10−3) | d (× 10−3 m) | z0 (× 10−3 m) |
|---|---|---|---|---|---|---|---|---|
Rib-type arrays | ||||||||
 AR = 1/1 | 19 | 19 | 219 | 8.0 | 0.36 | 4.1 | 6.0 | 0.04 |
 AR = 1/2 | 19 | 38 | 244 | 8.0 | 0.45 | 6.5 | 6.9 | 0.44 |
 AR = 1/3 | 19 | 57 | 248 | 8.4 | 0.52 | 7.6 | 5.9 | 0.63 |
 AR = 1/4 | 19 | 76 | 283 | 8.5 | 0.56 | 8.7 | 7.0 | 0.81 |
 AR = 1/5 | 19 | 95 | 284 | 8.5 | 0.59 | 9.6 | 6.2 | 1.04 |
 AR = 1/6 | 19 | 114 | 294 | 8.5 | 0.60 | 9.9 | 6.1 | 0.98 |
 AR = 1/8 | 19 | 152 | 294 | 8.4 | 0.60 | 10.1 | 4.0 | 1.04 |
 AR = 1/10 | 19 | 190 | 304 | 9.1 | 0.65 | 10.1 | 8.3 | 0.80 |
 AR = 1/12 | 19 | 228 | 304 | 9.1 | 0.67 | 10.8 | 13.6 | 0.85 |
 AR = 1/15 | 19 | 285 | 293 | 9.0 | 0.64 | 10.1 | 11.6 | 0.73 |
Cube-type arrays | ||||||||
 h:l | 11.4 | 16 | 135 | 10.0 | 0.42 | 3.6 | 5.2 | 0.02 |
 h:2l | 11.4 | 32 | 165 | 10.9 | 0.53 | 4.8 | 5.8 | 0.08 |
 h:3l | 11.4 | 48 | 165 | 10.8 | 0.54 | 4.9 | 5.3 | 0.09 |
 h:4l | 11.4 | 64 | 165 | 10.8 | 0.56 | 5.5 | 5.6 | 0.13 |
 h:5l | 11.4 | 80 | 160 | 10.6 | 0.54 | 5.2 | 5.4 | 0.11 |
 h:6l | 11.4 | 96 | 165 | 10.6 | 0.54 | 5.1 | 5.3 | 0.10 |
 h:7l | 11.4 | 112 | 160 | 10.6 | 0.53 | 5.0 | 5.0 | 0.09 |
 h:9l | 11.4 | 144 | 155 | 10.7 | 0.51 | 4.5 | 4.8 | 0.06 |
 h:4l − D | 21 | 64 | 190 | 10.8 | 0.60 | 6.3 | 5.8 | 0.23 |
 h:4l − T | 30.6 | 64 | 215 | 11.1 | 0.66 | 7.1 | 5.1 | 0.37 |
 h:4l − Q | 40.2 | 64 | 219 | 11.2 | 0.70 | 7.9 | 3.6 | 0.52 |