Demonstrated is an experimental means of measuring the mean flow velocity of a pulsating gas flow without the use of pipe constrictions. Small pseudo random binary sequence pressure pulses are injected into the flow. Correlation techniques are used to determine the velocity of propagation of these pulses from which the mean gas flow velocity can be calculated. The method is shown to be especially effective for high-velocity pulsating flows where measuring techniques at the present time are inadequate.
Pulsating Gas Flow In Pipes Part I -- Damping Coefficients