An example of the observed flow field

large picture

The velocity (arrows) and vorticity (colours) fields in the rotating, stratified fluid, 5 hours after the start of the forcing by the ring with 8 sources and 8 sinks. Largest velocity: 2 cm/s, largest vorticity: 1 /s.

rotation rate: 0.80 rad/s
buoyancy frequency: 0.8 /s
mean velocity from sources: 9.56 cm/s

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Frans de Rooij, last updated 26 January 1996.