X-wire probe for velocity measurements near the downstream edge of an aperture

摘要

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.