Premium
Subcritical open channel flows in four branch intersections
Author(s) -
Rivière N.,
Travin G.,
Perkins R. J.
Publication year - 2011
Publication title -
water resources research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.863
H-Index - 217
eISSN - 1944-7973
pISSN - 0043-1397
DOI - 10.1029/2011wr010504
Subject(s) - outflow , intersection (aeronautics) , flow (mathematics) , mechanics , channel (broadcasting) , range (aeronautics) , momentum (technical analysis) , volumetric flow rate , distribution (mathematics) , stage (stratigraphy) , mathematics , geology , environmental science , physics , meteorology , computer science , mathematical analysis , engineering , telecommunications , economics , paleontology , finance , aerospace engineering
Subcritical flow in an intersection composed of four similar orthogonal channels has been studied experimentally in a configuration with two inflows and two outflows for a wide range of experimental conditions. The results have been used to develop a relationship between the incoming flow rates and the flow distribution in the two outlet channels, based on the conservation of discharge and momentum in the intersection, and suitable stage‐discharge relationships for the downstream controls in the outflow channels. A final equation is provided by an empirical correlation for the outflow in one of the channels, based on the experimental data obtained from these experiments; this correlation agrees with all the available data to within ±5%. It is shown how the resulting set of equations can be used to compute the discharge distribution in any similar intersection, given the incoming flow rates and some form of stage‐discharge relationship for the outlet conditions.