Model parameters: how to get rid of trial and error?

Meurice, Robin;Soares Frazao, Sandra
(2023) 40th IAHR World Congress Vienna-Austria — Location: Vienna, Austria (2023.August.21AD)

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This presentation aims at presenting a methodology that hydro-morphodynamical modellers can use to develop closure models adapted to the flows they want to simulate for unclosed parameters, instead of using trial and error to tune them. It is applied to a two-phase/two-layer (2P2L) model aimed at simulating transient flows highly laden with sediment. A closure model is indeed developed with this methodology for its initially unclosed friction coefficient. The methodology is based on a simple numerical experiment that is run for a set of situations generated randomly and that correspond to the range of flows that the modeller wants to reproduce. This methodology can be applied to many hydro-morphodynamical models.
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Meurice, R., & Soares Frazao, S. (2023). Model parameters: how to get rid of trial and error? 40th IAHR World Congress Vienna-Austria, Vienna, Austria. https://hdl.handle.net/2078.5/102477