Two-dimensional modelling of free surface flow

Authors: Matjaž ČETINA
Citation: Acta hydrotechnica, vol. 18, no. 29, pp. 23-37, 2000.
Abstract: Some theoretical background of the two-dimensional (2D) depth-averaged mathematical models PCFLOW2D and PCFLOW2D-CURVE is described first. Basic equations of continuity, momentum conservation and the transport of turbulent kinetic energy per unit mass and its rate of dissipation are solved by using the finite volume numerical method. Several practical flow computations are shown: a steady flow in the Idrijca River narrow, a 2D flow of the Savinja River in the city of Laško and an unsteady dam-break flow in the sudden expansion and tidal flow in the system of three Mexican Pacific lagoons - Jitzamuri, Agiabampo and Bacorehuis. The comparison between the computed results and the field measurements or the physical models showed satisfactory agreement.
Keywords: two-dimensional modelling, depth-averaged model, curvilinear coordinates, Idrijca River narrow, Savinja, Laško, dam-break wave, Mexican lagoons
Full text: a29-mc.pdf