OPTIMISING ADV SAMPLING LOCATIONS IN SIMULATED VEGETATED FLOWS
The use of point source (ADV or LDV) sampling methods to analyse flow structures around vegetation arrays requires a decision as to the location of the sampling. The highly hetergenuous flow field that is an inherent characteristic of vegetated flows requires that the obtained flow characteristics will be highly influenced by the sampling location, Reynolds number, spacing of vegetative elements, vertical distribution of the plant material etc. This paper attempts to address this issue by looking at staggered emergent vegetated flow conditions at uniform flow with stem Reynolds numbers between 1255 and 3743. Each condition is first fully described by a dense grid of measurements comprising 69 vertical profiles which attempt to capture the velocity and turbulence structure.From this grid, a series of single vertical sampling profiles at different locations are chosen and the most representative are determined. The process is then repeated, whereby all the possible permutations of sampling locatins, for a combination of three sampling points, are examined.
vegetation cylinders sampling ADV
P.A.Xavier C.A.M.E.Wilson
Doctoral Research Student, Cardiff University, UK Cardiff University, UK
国际会议
第16届亚太地区国际水利学大会暨第3届水工水力学国际研讨会(16th IAHR-APD Congress and 3rd Symoposium of IAHR-ISHS)
南京
英文
1961-1965
2008-10-20（万方平台首次上网日期，不代表论文的发表时间）