Abstract: A velocity measurement probe comprises a straight body, four bent prongs projecting from the body and two cross-wires secured by the prongs. The prong tips are at right angles to the opposite ends of the prongs, which project at first in the body's axial direction. The probe in its entirety lies in a first geometric plane. The two cross-wires, retained at the tips of the prongs, lie in a second geometric plane which is orthogonal to the first geometric plane and which is parallel to the body's geometric axis. The probe is typically adaptable to connection with an anenometer, and is especially suitable for measuring the velocities of fluids at remote locations of an aperature, such as at an apertural edge which is directionally downstream of the fluid flow.

Abstract: As distinguished from conventional fluid flow vorticity determination methodologies, which must simultaneously measure all velocity components at plural locations, vorticity determination is inventively effected whereby velocity components are non-simultaneously (sequentially) measured at the various locations. At least three locations in the fluid are selected, a velocity signal is generated at each location, a reference signal (such as relating to pressure, acceleration or force) is generated at each location simultaneously with the generation of the velocity signal at such location, the time intervals between reference signals are recognized, and the foregoing information is received and/or considered by a computer system which mathematically accomplishes simultaneity of the generation of the velocity signals, thereby computing the vorticity as if such simultaneity has actually occurred.

Abstract: A flow modifying element is fixedly positioned on a cavity enclosure over a forward portion of an opening therein through which the cavity is exposed to fluid undergoing flow above the opening. Some of such fluid is thereby diverted into the cavity to suppress acoustic oscillations caused by flinduced cavity resonance.