Turbulence generated in bores is found to be sporadic and three dimensional when the Froude number is less than approximately 2.0. The turbulence characteristics behind the front are strongly affected by the behavior of the surface roller; the turbulence is created by intermittent advection of the recirculating flow of the surface roller. Although the one‐dimensional approximation of a bore motion is identical to that of a hydraulic jump in an inviscid fluid, there are fundamental differences in a real fluid environment. When the Froude number is less than approximately 1.7, the difference in the shear‐flow field between a bore and hydraulic jump affects their turbulence spreading rates.
REFERENCES
1.
I. A. Svendsen, P. A. Madsen, and J. Hansen, in Proceedings of the 16th Coastal Engineering Conference (ASCE, New York, 1978), p. 520.
2.
3.
D. H. Peregrine and I. A. Svendsen, in Proceedings of the 16th Coastal Engineering Conference (ASCE, New York, 1978), p. 540.
4.
H. J.
Lemheusser
and V. C.
Kartha
, J. Hydraul. Div., Proc. Am. Soc. Civ. Eng.
98
, 1367
(1972
).5.
6.
F. J.
Resch
, H. J.
Leutheusser
, and M.
Coantic
, J. Hydraul Res.
14
, 293
(1976
).7.
8.
9.
10.
See, for example, J. J. Stoker, Water Waves (Interscience, New York, 1957), p. 333.
11.
K. M. Mok, M. S. thesis, University of Washington, 1988.
12.
13.
M. Y. Su, A. W. Green, and M. T. Bergin, in Gas Transfer at Water Surfaces, edited by W. Brutsaert and G. H. Jirka (Reidel, Dordrecht, 1984), p. 211.
14.
K. Nadaoka, Report No. 33, Tokyo Institute of Technology, 1986.
15.
H. H. Yen and A. Ghazali, in Proceedings of the 20th Coastal Engineering Conference (ASCE, New York, 1986), p. 877.
16.
M. S.
Longuet‐Higgins
and J. S.
Turner
, J. Fluid Mech.
63
, 1
(1974
).17.
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© 1990 American Institute of Physics.
1990
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