The effects of hydraulic resistance in the dam-break problem
- 20 January 1955
- journal article
- Published by The Royal Society in Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences
- Vol. 227 (1170) , 399-407
- https://doi.org/10.1098/rspa.1955.0019
Abstract
When resistance is neglected, the solution of the simple dam-break problem is readily obtained on the basis of shallow-water theory, and the results are well known. However, near the head of the wave, where the water surface meets the ground, resistance effects cannot be neglected; there is, in fact, a type of boundary layer near the wave-front. In this paper, the Pohlhausen method (which is used in conventional boundary-layer problems) is applied to a study of the effect of this 'boundary layer'. In particular, the retardation of the wave-front behind the position predicted by the simple theory is found.Keywords
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