American Society of Civil Engineers


Experimental Study of Subcritical Dividing Flow in an Equal-Width, Four-Branch Junction


by Leonardo S. Nania, (corresponding author), (Associate Professor, Univ. of Granada, Edificio Politécnico, Campus de Fuentenueva, E18071, Granada, Spain. E-mail: LNania@ugr.es), Manuel Gómez, (Professor, FLUMEN Group, Technical Univ. of Catalonia, Jordi Girona, 1-3, Edificio D1, E08034, Barcelona, Spain.), José Dolz, (Professor, FLUMEN Group, Technical Univ. of Catalonia, Jordi Girona, 1-3, Edificio D1, E08034, Barcelona, Spain.), Pau Comas, (Civil Engineer, Technical Univ. of Catalonia, Jordi Girona, 1-3, Edificio D1, E08034, Barcelona, Spain.), and Juan Pomares, (Technical Engineer, Technical Univ. of Catalonia, Jordi Girona, 1-3, Edificio D1, E08034, Barcelona, Spain.)

Journal of Hydraulic Engineering, Vol. 137, No. 10, October 2011, pp. 1298-1305, (doi:  http://dx.doi.org/10.1061/(ASCE)HY.1943-7900.0000423)

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Document type: Technical Note
Discussion: by Nicolas Rivière E-mail: nicolas.riviere@insa-lyon.fr and et al.    (See full record)
Closure:(See full record)
Abstract: An experimental study of the subcritical dividing flow in an equal-width, four-branch junction with two inflows and two outflows is presented. A brief description of the flow characteristics is given. From the analysis of test data, a linear relationship among five nondimensional parameters, including inflow ratio, outflow ratio, Froude number of inflow in one direction, outflow depth ratio, and outflow aspect ratio, is proposed and proven to successfully predict the flow distribution in the junction. It can be used to solve the dividing flow problem in a street junction, and it can be included as a part of a numerical model of a street network involving subcritical flows.


ASCE Subject Headings:
Critical flow
Experimentation
Data processing
Open channel flow
Drainage
Runoff
Outflow
Inflow
Streets

Author Keywords:
Experimental data
Open-channel flow
Subcritical flow
Street
Crossing
Street crossing
Street junction
Street network
Surface drainage
Runoff