Waves Generated by a Pressure Disturbance Moving in a Channel with a Variable Cross-Sectional Topography

by Tomas Torsvik, (corresponding author), Postdoctorate; Bergen Ctr. for Computational Sci., Univ. of Bergen, Høyteknologisenteret, Thormøhlensgate 55, N-5008 Bergen, Norway, tomas.torsvik@bccs.uib.no,
Geir Pedersen, Prof.; Dept. of Mathematics, Univ. of Oslo, P.O. Box 1053, Blindern, N-0316 Oslo, Norway., geirkp@math.uio.no,
Kristian Dysthe, Prof.; Dept. of Mathematics, Univ. of Bergen, Johannes Brunsg 12, N-5008 Bergen, Norway., dysthe@math.uib.no,

Serial Information: Issue 3, Pg. 120-123

Document Type: Journal Paper

Abstract: The present work is a numerical investigation on waves generated by a pressure disturbance moving at constant speed in a channel with a variable cross-channel depth profile. The channel profile, which is uniform in the along-channel direction, has a deep trench located along the centerline of the channel, and shallow banks near the channel walls. Characteristic features upstream and downstream of the moving pressure disturbance are related to the parameters of the pressure disturbance and the cross-channel profile. Our numerical investigation is based on the COULWAVE long wave model.

Subject Headings: Wave pressure | Wave generation | Cross sections | Topography | Numerical analysis | Numerical methods | Rivers and streams | Walls | Parameters (statistics) | Trenches |

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