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what is the principale of vortex flow meter.
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Answer Posted / sanjay lashkari
vortex flowmeters utilise the phenomenon called vortex
shedding that occurs when a fluid flows against a
non-streamlined obstruction, termed a bluff body. the
peripheral layers of the fluid are unable to follow the
defined contours of the bluff body & seperate from its
surfaces to form vortices that are swept downstream. (
kamran vortex street).
the shedding frequency is directly proportional to the free
velocity over a wide range of flow, excluding the laminar
region.
these vortices manifest themselves as sinusoidal pressure
variations.these pressure variations are converted in to
sinusoidal current signal.
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