Experiments with a Vortex Shedding Flowmeter in Two-Phase Air-Water Flow.

摘要

Experiments performed with a strain gage-type vortex shedding flowmeter in two-phase vertical upflow and downflow in the Air-Water Test Facility at the Oak Ridge National Laboratory are described. Digital signal analysis techniques were used to evaluate the utility of the test meter for measuring two-phase flow. The studies indicate that vortex shedding can be used to produce clear, modulated signals in a generally homogeneous stream with relatively small quantities of a dispersed phase. At intermediate void fractions, however, the test meter produced meaningless or intermittent signals except when the flow velocity was very high.