The entropy solution to the evolution of a bedform in a closed conduit

Obando, B.; Gormaz, R.; Conca, C.; San Martín, J.; Tamburrino, A.

Keywords: bedforms, entropy solution, circular cross-section pipe, non-conservative equation, Exner equation


Exner's classical approach for the evolution of a bedform is applied to a cylindrical closed conduit. The discontinuity that appears in a progressive wave after a given time is overcome using an entropy solution. Exner's original equation is used to determine the bedload relation. This simple model reproduces the general features of bedforms inside closed conduits, while the numerical entropy solution is free of oscillations. This simplified analysis represents a first step towards developing a more complex model that considers the momentum equation including a frictional term.

Más información

Título de la Revista: Revista SOCHID
Volumen: 36
Editorial: Sociedad Chilena de Ingeniería Hidráulico
Fecha de publicación: 2021
Página de inicio: 107
Página final: 119
Idioma: Inglés