Abstract
A configuration of a T-shaped vortex shedder is developed with the goal of improving the quality of the vortex shedding signal measured. This T-shaped vortex shedder comprises a trapezoidal cylinder which is fixed in shape and an extended plate attached behind whose length is variable. The vortex shedding frequency is deduced from the differential pressure signal measured, which corresponds to the pressure difference resulting from the two sides of the trapezoidal cylinder. By varying the length of the extended plate, the optimal situation is found to be when the length of the extended plate falls in the range of 1.56 to 2.0 times the width of the vortex shedder, when the low-frequency variations embedded in the pressure signal are significantly suppressed.
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