American Society of Civil Engineers


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 E-mail: tomas.torsvik@bccs.uib.no), Geir Pedersen, (Prof., Dept. of Mathematics, Univ. of Oslo, P.O. Box 1053, Blindern, N-0316 Oslo, Norway. E-mail: geirkp@math.uio.no), and Kristian Dysthe, (Prof., Dept. of Mathematics, Univ. of Bergen, Johannes Brunsg 12, N-5008 Bergen, Norway. E-mail: dysthe@math.uib.no)

Journal of Waterway, Port, Coastal and Ocean Engineering, Vol. 135, No. 3, May/June 2009, pp. 120-123, (doi:  http://dx.doi.org/10.1061/(ASCE)0733-950X(2009)135:3(120))

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Document type: Technical Note
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.


ASCE Subject Headings:
Long waves
Solitary waves
Wave propagation
Shallow water
Channel flow
Topography
Cross sections
Pressure distribution