Numerical simulation of tidal bore in Kampar river: a preliminary study

Abstract

Tidal bore is a very rare natural phenomenon, in which the flow of the river goes upstream. It usually happens close to the estuary. In Indonesia, it happens at Kampar river, Riau province. Some factors that cause this phenomena are tides waves and water bottom topography. In this paper, we simulated the propagation of tidal bore in the Kampar river based on shallow water equations (SWE). We used the staggered grid conservative scheme to discretize the SWE. Next, we apply bottom topography of Kampar river and tides elevation profile there into our scheme. Finally, we present numerical simulation of tidal bore propagation along the Kampar river. The result shows that the river discharges have a quite significant effect on increasing bore elevations. The friction coefficient has an important role on wave attenuation of tidal bore propagation.