PROCÉDÉ DE MESURE D'UN DÉBIT DE SORTIE, APPAREIL DE MESURE D'UN DÉBIT DE SORTIE ET PROCÉDÉ D'UTILISATION D'UN APPAREIL DE MESURE D'UN DÉBIT DE SORTIE

摘要

The object is to facilitate determination of a flow rate of fluid discharged from a discharge opening. Intensity (p) of a supersonic wave S generated at and propagated from the discharge opening in association with discharge of the fluid from the discharge opening 1 is determined at a determinate site distant from the discharge opening 1. And, a propagation distance L from the discharge opening 1 to the determination site 3 is determined or investigated. Then, based upon a correlation existent among the intensity (p) of the propagated supersonic wave S , the propagation distance L and the fluid discharge flow rate Q from the discharge opening 1, the fluid discharge rate Q is obtained from the determined or investigated supersonic wave intensity (p) and the propagation distance L.