Non-intrusive two-phase flow measurement system

Details Non-intrusive two-phase flow measurement system Non-intrusive two-phase flow measurement system

2011-05-17

2011-05-17

Thompson, Jewel (Department: 2855)

Measuring and testing

Volume or rate of flow

Of selected fluid mixture component

Reexamination Certificate

active

07942066

ABSTRACT:
A process for determining a fluid flow velocity and then a mass flow rate of a cryogenic fluid in which a Helmholtz resonator is used to detect a presence of a two-phase flow in a conduit. The process first measures a frequency of the fluid flow, then determines a speed of sound of the fluid from the frequency, then measures the temperature of the fluid flow, and from the speed of sound and the temperature determines a quality of the fluid flow (liquid or vapor), and from the frequency and the fluid quality determines a Strouhal Number. The fluid flow velocity is found from an equation relating the frequency and a diameter of the surface area to the Strouhal Number. The mass flow rate is found from the fluid flow velocity and the temperature.

REFERENCES:
patent: 4240299 (1980-12-01), Joy et al.
patent: 5880377 (1999-03-01), Celik
patent: 6912918 (2005-07-01), Lynnworth et al.
patent: 7032432 (2006-04-01), Gysling et al.

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