文档介绍：362 IEEE SENSORS JOURNAL, VOL. 14, NO. 2, FEBRUARY 2014
r part of the data set is used to test mathematic functions [6]–[9], getting the complete velocity
the feasibility of the ANN. It was found that the error of the
estimated cross-sectional mean flow velocity based on the ANN distribution of rotating and swirling turbulent flows in circular
is within ±% without the requirement of any flow conditioner pipes by computational fluid dynamics (CFD) simulation to
for Reynolds number in the range from × 103 to × 105, investigate the effect of distorted flow profiles [10]–[13]. Some
which is significantly better than the results from the traditional researchers reconstructed the flow profile by ultrasound tomog-
weighted integration method. The proposed ANN based data raphy to improve the performance of multipath ultrasonic
integration method is of extending the limitation of straight pipe
length for the installation of multi-path ultrasonic flowmeter and flowmeters under distorted flow field [14]–[16]. However, in
promoting its practical applications under complex flow profiles. order to get enough paths distributed on the cross-section,
the proposed ultrasound tomography system required more
Index Terms— Multipath ultrasonic flowmeter, ANN, CFD,
flow profi