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Note on the use of plaster of paris in flow visualization, and some geological applications

Published online by Cambridge University Press:  28 March 2006

J. R. L. Allen
J. R. L. Allen
Affiliation:
Department of Geology, University of Reading
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Abstract

The pattern of motion on the surface of a model shaped in plaster of paris and immersed in a water stream, can be made visible by reason of the marks caused when small discontinuities in the surface excite local fluctuations of velocity which lead to differential solution of the plaster and to small features of relief. This technique, which has so far been applied in geological studies, is illustrated by reference to motions about a cylinder on a flat plate and over symmetrical skewed steps. Current crescents and sand waves are briefly discussed in the light of these motions.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 25 , Issue 2 , June 1966 , pp. 331 - 335
Copyright
© 1966 Cambridge University Press

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References

Arie, M. & Rouse, H. 1956 Experiments on two-dimensional flow over a normal wall. J. Fluid Mech. 1, 129.Google Scholar
Bradshaw, P. 1964 Experimental Fluid Mechanics. London: Pergamon Press.
Hornung, H. G. & Joubert, P. N. 1963 The mean velocity profile in three-dimensional turbulent boundary layers. J. Fluid Mech. 15, 368.Google Scholar
Johnston, J. 1960 On the three-dimensional turbulent boundary layer generated by secondary flow. Trans. A.S.M.E., D 82, 233.Google Scholar
Raudkivi, A. J. 1963 Study of sediment ripple formation. J. Hydr. Div., Proc. A.S.C.E. 89, 15.Google Scholar
Sowerby, L. 1965 The three-dimensional boundary layer on a flat plate. J. Fluid Mech. 22, 587.Google Scholar
Tani, I. 1957 Experimental investigations of flow separation over a step. Proc. Boundary-Layer Res. Symp. Intern. Un. Theor. & Appl. Mech. (Freiburg), p. 377.Google Scholar