A methodology for measuring the wind drag coeeficient on coastal dune vegetation: a study on seaoats (Uniloa paniculata)
1992
Burger, Tracy A.
Current plant canopy wind flow models require three aerodynamic parametersto predict the effects of wind on sand transport--the plant drag coefficient, Cd, the leafarea density profile, LAD, and the turbulent eddy transfer coefficient, 6,. The LADand Cd characterize the plant canopy and its effects on air flow and, prior to thisstudy, data on these parameters for dune vegetation did not exist. The purpose of thisstudy was to design and test a methodology for measuring the wind drag coefficient ofcoastal dune plants. The objectives were 1) to measure and record the parametersneeded to calculate Cd, namely, the force, relative velocity and air temperature; 2) tomeasure the leaf area density of sea-oats; 3) to validate the method by measuring thequantities needed to compute the drag coefficient for a right circular data exists; and 4) to explore the Reynolds number dependence of the canopy dragcoefficient. (This document has 76 pages.)
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