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JOURNAL OF FACULTY OF CIVIL ENGINEERING 26, 2014.y., pp. 7-14


BOUNDARY CONDITIONS FOR FLOW COMPUTATION IN 2-D MODELS
 
DOI: 10.14415/zbornikGFS26.01
UDC: 556.048
CC-BY-SA 4.0 license
Author : Horvat, Zoltan; Horvat, Mirjana
 
 Summary:
 This work presents some possibilities for imposing boundary conditions for flow computation in 2-D models. Boundary conditions can be given as imposed unit discharges, free-surface elevation or a known rating curve. A frequently encountered situation is that only the total discharge through a cross-section is known, either from a hydro-meteorological station or as a result of a 1-D model. Taking this into consideration, imposing a known unit discharge implies making an estimate of its value knowing only the total discharge through the considered cross-section. This work proposes an algorithm for resolving this issue. The proposed algorithm was implemented on field measurements conducted on the Danube River.
 
 Keywords:
 Boundary conditions, flow computation, 2-D models