Also having to be considered is air temp, air density, and absolute pressure at the converging inlet of the bell mouth which is not wholly dictated by velocity alone. As the diameter and gradient of the inlet structure play large roles in the calculation of critical flow through the throat of the restristor by creating upstream pressure by nature of its shape.
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Probae esti in segetem sunt deteriorem datae fruges, tamen ipsae suaptae enitent L.P.  |