BROUČEK, M., L. SATRAPA, and M. KRÁLÍK. Spiral flow and pressure fluctuations in high shaft spillways. In: Proceedings 85th ICOLD Annual Meeting International Symposium. Symposium Knowledge Based Dam Engineering, Praha, 2017-07-05. Praha: GUARANT International spol. s r.o., 2017. ISBN 978-80-906662-1-4. Available from: http://www.barajguvenligi.org/publication/518/spiral-flow-and-pressure-fluctuations-in-high-shaft-spillways
The paper is focused on improvement of hydraulic conditions in high shaft spillways due to spiral flow enforcement. It presents results from 1:20 scale physical model of complete structure of high circular shaft spillway equipped with different arrangements of pro-vortex structures at the circular intake section (shape, numbers). The effect of spiral flow in the shaft is commented from the pressure fluctuations, overall capacity and stability of the flow conditions point of view. Pressure fluctuations were measured in the shaft and along the outlet tunnel with high frequency probes. The influence of the shape of the bend between the shaft and the outlet tunnel together with flow regime in the outlet tunnel on the pressure fluctuations is evaluated. Comparison with axial flow without pro-vortex vanes is also provided in the paper.
eng
dc.format.mimetype
application/pdf
dc.language.iso
eng
dc.publisher
GUARANT International spol. s r.o.
dc.relation.ispartof
Proceedings 85th ICOLD Annual Meeting International Symposium
Spiral flow and pressure fluctuations in high shaft spillways
eng
dc.type
stať ve sborníku
cze
dc.type
conference paper
eng
dc.relation.projectid
info:eu-repo/grantAgreement/Ministry of Interior/VG/VG20102014056/CZ/Reliability Improvement of Control Structures Installed on Hydraulic Structures for Sustaining Crisis Situation Caused by Natural Disasters and Accidental Operation/
