Boundary conditions for flow computation in 2-D models

• Main Authors: Horvat Zoltan, Horvat Mirjana
• Format: Article
• Language: English
• Published: Faculty of civil engineering, Subotica 2014-01-01
• Series: Zbornik Radova Građevinskog Fakulteta
• Subjects: boundary conditions; flow computation; 2-D models
• Online Access: http://scindeks-clanci.ceon.rs/data/pdf/0352-6852/2014/0352-68521426007H.pdf

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.