Other
Scientific paper
Jun 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001jgr...10611001d&link_type=abstract
Journal of Geophysical Research, Volume 106, Issue B6, p. 11001-11012
Other
3
Meteorology And Atmospheric Dynamics: Boundary Layer Processes, Planetology: Solid Surface Planets: Interactions With Particles And Fields, Planetology: Solid Surface Planets: Meteorology, Planetology: Fluid Planets: Surfaces
Scientific paper
The nature of interactions between surface winds and sand surfaces that can be characterized by aerodynamic roughness length has important implications for aeolian sediment transport. Here we report the wind tunnel results of systematic tests of the aerodynamic roughness lengths of different sized fixed sand beds at different free-stream wind velocities. The results suggest that there are complex variations of aerodynamic roughness length. Wind is an active factor in determining the aerodynamic roughness length of fixed sand beds. The so-called 1/30 law in aeolian research proposed by Bagnold more than a half century ago for sand surfaces is found to suffer some limitations. Some multivariate models relating aerodynamic roughness length and other factors are provided. The differences between the aerodynamic roughness of fixed and mobile beds are discussed, and it is implied that mobile surfaces adapt to the wind by changing roughness. The similarities between aerodynamic roughness and hydraulic roughness are compared. Aerodynamic roughness is divided into aerodynamically smooth, transitional, and completely rough regimes.
Dong Zhibao
Liu Lianyou
Liu Xianwan
Wang Xunming
Zhao Aiguo
No associations
LandOfFree
Aerodynamic roughness of fixed sandy beds does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Aerodynamic roughness of fixed sandy beds, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Aerodynamic roughness of fixed sandy beds will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1133972