TY - JOUR 
A1 - Castillo Elsitdie, Luis G.
AU - García Bermejo, Juan Tomás
AU - Carrillo Sánchez, José María
T1 - Influence of rack slope and approaching conditions in bottom intake systems
Y1 - 2017
SN - 2073-4441
UR - http://hdl.handle.net/10317/8490
AB - The study analyzes the flow over bottom racks made of longitudinal T-shaped bars. A clear water flow is considered in a laboratory flume. Free surface profiles, wetted rack lengths, and discharge coefficients are measured, changing parameters such as longitudinal slope, void ratio, and approaching flow. The present work complements existing experimental studies, considering the influence of the approaching flow conditions. The velocity field measured with Particle Image Velocimetry (PIV) technique and the pressure field with Pitot tubes are quantified. Numerical simulations (CFD) are used to complement laboratory data. The energy head along the rack is calculated and compared with the hypothesis of horizontal energy level with minimum energy at the beginning of the rack. A discharge coefficient adjustment that considers the slope, the void ratio, and the position along the rack is proposed and presented with the results of other works. Theoretical proposals to calculate the pressure field along the flow are compared with measurements in the laboratory. The relation between the static pressure head in the space of bars and the discharge coefficient is used as an alternative method to define the discharge.
KW - Ingeniería Hidráulica
KW - Intake system
KW - Bottom racks
KW - Discharge coefficient
KW - Velocity distribution
KW - Pressure distribution
KW - Particle image velocimetry
KW - Computational fluid dynamics
KW - 3305.15 Ingeniería Hidráulica
LA - eng
PB - MDPI AG
ER -