TY - GEN
T1 - Aeration performance of a hydraulic jump
AU - Kucukali, S.
AU - Cokgor, S.
PY - 2007
Y1 - 2007
N2 - Hydraulic jump is occurred at the transition from supercritical to subcritical flow which is characterized with energy dissipation due to highly turbulent flow, air entrainment, and macro-scale vortices. In this study self-aeration performance of a classical hydraulic jump beyond a sluice gate, has been investigated in a 0.5 m wide flume. Experiments were conducted for a range of upstream Froude numbers 2-6, and unit discharges 2×10 -2 -5.3×10 -2 m 3/sm. It was appeared that the aeration efficiency of a hydraulic jump was mostly dependent on head loss, and then to the unit discharge positively. Further, turbulence structure of the hydraulic jump, which ensures the entrainment of air into water, was highlighted by using an Acoustic Doppler velocimeter at low Froude numbers. An empirical formula predicting aeration efficiency for hydraulic jumps was developed by using non-linear regression analysis. Good agreement between measured and predicted aeration efficiency values was obtained.
AB - Hydraulic jump is occurred at the transition from supercritical to subcritical flow which is characterized with energy dissipation due to highly turbulent flow, air entrainment, and macro-scale vortices. In this study self-aeration performance of a classical hydraulic jump beyond a sluice gate, has been investigated in a 0.5 m wide flume. Experiments were conducted for a range of upstream Froude numbers 2-6, and unit discharges 2×10 -2 -5.3×10 -2 m 3/sm. It was appeared that the aeration efficiency of a hydraulic jump was mostly dependent on head loss, and then to the unit discharge positively. Further, turbulence structure of the hydraulic jump, which ensures the entrainment of air into water, was highlighted by using an Acoustic Doppler velocimeter at low Froude numbers. An empirical formula predicting aeration efficiency for hydraulic jumps was developed by using non-linear regression analysis. Good agreement between measured and predicted aeration efficiency values was obtained.
KW - Aeration
KW - Hydraulic jump
KW - Turbulent flow
UR - https://www.scopus.com/pages/publications/84855181115
U2 - 10.1061/40856(200)104
DO - 10.1061/40856(200)104
M3 - Conference contribution
AN - SCOPUS:84855181115
SN - 0784408564
SN - 9780784408568
T3 - Examining the Confluence of Environmental and Water Concerns - Proceedings of the World Environmental and Water Resources Congress 2006
BT - Examining the Confluence of Environmental and Water Concerns - Proceedings of the World Environmental and Water Resources Congress 2006
T2 - World Environmental and Water Resources Congress 2006: Examining the Confluence of Environmental and Water Concerns
Y2 - 21 May 2006 through 25 May 2006
ER -