Hostname: page-component-76fb5796d-45l2p Total loading time: 0 Render date: 2024-04-29T08:09:30.938Z Has data issue: false hasContentIssue false

A model for the free-surface flow due to a submerged source in water of infinite depth

Published online by Cambridge University Press:  17 February 2009

J.-M. Vanden-Broeck
Affiliation:
Department of Mathematics and Center for the Mathematical Sciences, University of Wisconsin Madison, WI 53706, USA
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We consider a free-surface flow due to a source submerged in a fluid of infinite depth. It is assumed that there is a stagnation point on the free surface just above the source. The free-surface condition is linearized around the rigid-lid solution, and the resulting equations are solved numerically by a series truncation method with a nonuniform distribution of collocation points. Solutions are presented for various values of the Froude number. It is shown that for sufficiently large values of the Froude number, there is a train of waves on the free surface. The wavelength of these waves decreases as the distance from the source increases.

Type
Research Article
Copyright
Copyright © Australian Mathematical Society 1998

References

[1]Hocking, G. C. and Forbes, L. K., “A note on the flow induced by a line sink beneath a free surface”, J. Aust. Math. Soc. Ser. B 32 (1990) 251260.CrossRefGoogle Scholar
[2]Hocking, G. C. and Forbes, L. K., “Subcritical free-surface flow caused by a line source in a fluid of finite depth”, J. Eng. Math. 26 (1992) 455466.CrossRefGoogle Scholar
[3]Mekias, H. and Vanden-Broeck, J.-M., “Supercritical free-surface flow with a stagnation point due to a submerged source”, Phys. Fluids A 1 (1989) 16941697.CrossRefGoogle Scholar
[4]Mekias, H. and Vanden-Broeck, J.-M., “Subcritical flow with a stagnation point due to a source beneath a free surface”, Phys. Fluids A 3 (1991) 26522658.CrossRefGoogle Scholar
[5]Peregrine, D. H., “A line source beneath a free surface”, Rep. no 1248, Math. Res. Cent. (University of Wisconsin, Madison, 1972).Google Scholar
[6]Shanks, D., “Non-linear transformations of divergent and slowly-convergent sequences”, J. Math Phys. 34 (1955) 142.CrossRefGoogle Scholar
[7]Tuck, E. O. and Vanden-Broeck, J.-M., “A cusp-like free-surface flow due to a submerged source or sink”, J. Aust. Math. Soc. Ser. B 25 (1984) 443450.CrossRefGoogle Scholar
[8]Vanden-Broeck, J.-M., “Nonlinear free-surface flows past two-dimensional bodies”, in Advances in Nonlinear Waves, Vol 2, (ed. Debnath, L.) (Boston, Pitman, 1985).Google Scholar
[9]Vanden-Broeck, J.-M., “Waves generated by a source below a free surface in water of finite depth”, J. Eng. Math. 30 (1996) 603609.CrossRefGoogle Scholar
[10]Vanden-Broeck, J.-M. and Keller, J. B., “Free surface flow due to a sink”, J. Fluid Mech. 175 (1987) 109117.CrossRefGoogle Scholar
[11]Vanden-Broeck, J.-M., Schwartz, L. W. and Tuck, E. O., “Divergent low-Froude-number series expansion of nonlinear free-surface flow problems”, Proc. R. Soc. Lond. A 361 (1978) 207224.Google Scholar
[12]Vanden-Broeck, J.-M. and Tuck, E. O., “Computations of near-bow or stern flows, using series expansions in the Froude number”, Proc. 2nd Int. Conf. Num. Ship Hydrodynamic, Berkeley, Calif. (1977) 371381.Google Scholar