TY - JOUR
T1 - The application of LS-PIV to a small irregular river for inbank and overbank flows
AU - Gunawan, B.
AU - Sun, X.
AU - Sterling, M.
AU - Shiono, K.
AU - Tsubaki, R.
AU - Rameshwaran, P.
AU - Knight, D. W.
AU - Chandler, J. H.
AU - Tang, X.
AU - Fujita, I.
N1 - Funding Information:
The authors are grateful to the UK Engineering and Physical Sciences Research Council who funded this research under the auspices of grant EP/E002250/01 . The writers also wish to acknowledge the support given by Environment Agency for England and Wales and the Blackwater Valley Countryside Partnership.
PY - 2012/4
Y1 - 2012/4
N2 - This paper examines the feasibility of applying a mobile, large scale particle image velocimetry (LS-PIV) system to a 300m reach of a small river in order to estimate the discharge. Detailed velocity measurements at a number of locations were carried out using an acoustic Doppler current profiler (ADCP) and acoustic Doppler velocimetry (ADV) for inbank, bankfull and overbank flows. The lateral distributions of the velocity index k (i.e., the ratio of the depth-averaged velocity to the surface velocity) were found to be influenced by the secondary currents, channel vegetation and flow conditions. An attempt is made to quantify the relationship between secondary flow and the velocity index. Appropriate conclusions and advice relating to the practical use of a LS-PIV system as applied to a small river are given.
AB - This paper examines the feasibility of applying a mobile, large scale particle image velocimetry (LS-PIV) system to a 300m reach of a small river in order to estimate the discharge. Detailed velocity measurements at a number of locations were carried out using an acoustic Doppler current profiler (ADCP) and acoustic Doppler velocimetry (ADV) for inbank, bankfull and overbank flows. The lateral distributions of the velocity index k (i.e., the ratio of the depth-averaged velocity to the surface velocity) were found to be influenced by the secondary currents, channel vegetation and flow conditions. An attempt is made to quantify the relationship between secondary flow and the velocity index. Appropriate conclusions and advice relating to the practical use of a LS-PIV system as applied to a small river are given.
KW - Acoustic Doppler current profiler
KW - Discharge estimation
KW - Large scale particle image velocimetry
UR - http://www.scopus.com/inward/record.url?scp=84862817779&partnerID=8YFLogxK
U2 - 10.1016/j.flowmeasinst.2012.02.001
DO - 10.1016/j.flowmeasinst.2012.02.001
M3 - Article
AN - SCOPUS:84862817779
SN - 0955-5986
VL - 24
SP - 1
EP - 12
JO - Flow Measurement and Instrumentation
JF - Flow Measurement and Instrumentation
ER -