An optimal control based method for coupling 1D/2D models applied to river hydraulics

Igor Gejadze, Jerome Monnier & Igor Gejadze
Although computer power has been steadily growing in recent years, operational hydrological models describing river networks are still based on the 1D shallow water equations (SWE) or the Saint-Venant equations. Essentially two-dimensional situations ("storage areas", for example) are represented by source terms, which are computed using empirical expressions. Obviously, this approach suffers accuracy limitations and tells us nothing about 2D flow patterns in the area of interest. This justifies the use of limited area 2D...
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