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مکانیک::
مسیر گرداب، خیابان گردابه
Within the fluctuating pressure pattern two distinct superposed frequency bands are observed: the lower one is connected to the stator wake passing, the higher one is caused by the stator vortex street.
The stator vortex street strongly influences the rotor inlet flow field.
A second group of amplitude peaks related to the stator vortex street lies around 50-75 kHz.
The vortex street causes a broad spectrum of frequencies, and is in agree- ment with observations by Sondak and Dorney (1999).
Besides pressure fluctuations, a vortex street also distorts total temperature in the wake of a blunt body, which becomes apparent from the first law of thermodynamics.
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