Summary
A source of fluid with an oscillatory strength, which is situated on the axis of a rotating fluid, commences to act at time t=0. We describe how inviscid, geostrophic forces lead to the development of the characteristic cone when the frequency of oscillation is less than twice the frequency of rotation. Eventually, viscous forces become important when the time is O(E -1/3), where E is the small Ekman number, in forming the thin shear layer along the surface of the cone.
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References
H. Oser, Erzwungene Schwingungen in rotierenden Flussigkeiten, Arch. Rat. Mech. Anal. 1 (1957) 81–96.
A.J. Reynolds, Forced oscillations in a rotating fluid, II, Z. angew. Math. Phys. 13 (1962) 561–572.
H.R. Greenspan, Theory of rotating fluids. Cambridge University Press, Cambridge (1968).
I.C. Walton, Viscous shear layers in an oscillating rotating fluid, Proc. Roy. Soc. London A 344 (1975) 101–110.
S.H. Smith, Unsteady flow from a source in a rotating fluid, J. Eng. Math. 18 (1984) 235–246.
P.G. Baines, Forced oscillations of an enelosed rotatin fluid. J. Fluid Mech. 30 (1967) 533–546.
A. Erdelyi (ed.), Bateman Manuseript Project, Higher Transcendental Functions, Volume 2, McGraw Hill, New York (1954).
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Smith, S.H. On the development of characteristics in an oseillating, rotating fluid. J Eng Math 19, 321–327 (1985). https://doi.org/10.1007/BF00042876
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DOI: https://doi.org/10.1007/BF00042876