Estimate of Drag Coefficient for a Finite Patch of Rigid Cylinders

AbstractThis note presents laboratory measurements of the drag coefficient for a finite patch of vegetation that was simulated with a limited number of rigid cylindrical rods. The experiment was designed based on an analogy between the drag imposed by a vegetation patch in an open-channel flow and t...

Full description

Saved in:
Bibliographic Details
Published in:Journal of hydraulic engineering (New York, N.Y.) N.Y.), 2019-02, Vol.145 (2)
Main Authors: Cheng, Nian-Sheng, Hui, Cai Ling, Chen, Xingwei
Format: Article
Language:English
Subjects:
Channel flow
Cylinders
Drag
Drag coefficient
Drag coefficients
Large eddy simulation
Open channel flow
Porosity
Rods
Settling rate
Settling velocity
Technical Note
Technical Notes
Vegetation
Water tanks
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:AbstractThis note presents laboratory measurements of the drag coefficient for a finite patch of vegetation that was simulated with a limited number of rigid cylindrical rods. The experiment was designed based on an analogy between the drag imposed by a vegetation patch in an open-channel flow and that experienced by the patch settling in a water tank. The results show that the average drag coefficient calculated from the measured settling velocity can be expressed as a function of the patch porosity. The experimental data are also consistent with previous predictions by large eddy simulations.
ISSN:0733-9429
1943-7900
DOI:10.1061/(ASCE)HY.1943-7900.0001561