# The effect of rotation on conical wave beams in a stratified fluid

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DOI: 10.1007/s00348-005-0955-y

- Cite this article as:
- Peacock, T. & Weidman, P. Exp Fluids (2005) 39: 32. doi:10.1007/s00348-005-0955-y

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## Abstract

Experiments are conducted to test extant theory on the effect of uniform rotation Ω on the angle *θ* of conical beam wave propagation excited by a sphere vertically oscillating at frequency *ω* in a density stratified fluid. The near-constant Brunt–Väisälä frequency stratification *N* produced in situ in a rotating cylindrical tank exhibits no effect of residual motion for the range of Froude numbers investigated. Good agreement between experiment and theory is found over the range of angles 15°<*θ*<65° using the “synthetic schlieren” visualization technique. In particular, the cut-off for wave propagation at *ω*=2Ω, below which waves do not propagate, is clearly observed.