American Society of Civil Engineers


Interacting Divided Channel Method for Compound Channel Flow


by Fredrik Huthoff, (Ph.D. Candidate, Water Mgmt. and Engrg., Fac. of Engrg. Technol., Univ. of Twente, Enschede, The Netherlands; Consultant, Hydr. Systems Modeling, HKV Consultants, Lelystad, The Netherlands), Pieter C. Roos, (Asst. Prof., Water Mgmt. and Engrg., Fac. of Engrg. Technol., Univ. of Twente, Enschede, The Netherlands), Denie C. M. Augustijn, (Asst. Prof., Water Mgmt. and Engrg., Fac. of Engrg. Technol., Univ. of Twente, Enschede, The Netherlands), and Suzanne J. M. H. Hulscher, (Prof., Water Mgmt. and Engrg., Fac. of Engrg. Technol., Univ. of Twente, Enschede, The Netherlands)

Journal of Hydraulic Engineering, Vol. 134, No. 8, August 2008, pp. 1158-1165, (doi:  http://dx.doi.org/10.1061/(ASCE)0733-9429(2008)134:8(1158))

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Document type: Technical Note
Closure:(See full record)
Discussion: by P. J. M. Moreta E-mail: pmarmor@ciccp.es and et al.    (See full record)
Abstract: A new method to calculate flow in compound channels is proposed: the interacting divided channel method (IDCM), based on a new parametrization of the interface stress between adjacent flow compartments, typically between the main channel and floodplain of a two-stage channel. This expression is motivated by scaling arguments and allows for a simple analytical solution of the average flow velocities in different compartments. Good agreement is found between the analytical model results and laboratory data from the literature.


ASCE Subject Headings:
Flood plains
Hydraulic models
Flow resistance
Lateral stress