Application of half-inversion pulse on velocity profile measurement using ultrasonic time-domain correlation method

2016 ◽  
Vol 2016.21 (0) ◽  
pp. D133
Author(s):  
Sanehiro WADA ◽  
Takashi SHIMADA
Keyword(s):  
Velocity Profile ◽  
Time Domain ◽  
Correlation Method ◽  
Inversion Pulse ◽  
Profile Measurement ◽  
Ultrasonic Time ◽  
Velocity Profile Measurement ◽  
Time Domain Correlation

Velocity Profile Measurement in Turbulent Pipe Flow Using Ultrasound Time-Domain Correlation Method

2002 ◽  
Author(s):  
Gentaro Yamanaka ◽  
Hiroshige Kikura ◽  
Masanori Aritomi
Keyword(s):  
Velocity Profile ◽  
Time Domain ◽  
Pipe Flow ◽  
Correlation Method ◽  
Turbulent Pipe Flow ◽  
Profile Measurement ◽  
Doppler Method ◽  
Velocity Profile Measurement ◽  
Pulse Doppler ◽  
Time Domain Correlation

This paper presents a velocity profile measurement technique using a ultrasound time-domain correlation method (UTDC). The system is based on the cross correlation between two consecutive echoes of ultrasonic pulses to detect the velocity. The UTDC has two advantages over a conventional ultrasound pulse Doppler method. First, the system has a higher time resolution than the pulse Doppler method. Second, the system does not have a limitation in maximum measurable velocity, which is limited by Nyquist’s sampling theorem. In this paper, the velocity profile measurement in turbulent pipe flow using the UTDC is performed.

Study on Velocity Profile Measurement Using Ultrasound Time-Domain Correlation Method

2001 ◽  
Author(s):  
Gentaro Yamanaka ◽  
Hiroshige Kikura ◽  
Masanori Aritomi
Keyword(s):  
Velocity Profile ◽  
Time Domain ◽  
Correlation Method ◽  
Sampling Theorem ◽  
Profile Measurement ◽  
Doppler Method ◽  
Measurable Velocity ◽  
Velocity Profile Measurement ◽  
Pulse Doppler ◽  
Time Domain Correlation

Abstract This paper presents a velocity profile measurement technique using a ultrasound time-domain correlation method (UTDC). The system is based on the cross correlation between two consecutive echoes of ultrasonic pulses to detect the velocity. The UTDC has two advantages over a conventional ultrasound pulse Doppler method. First the system has a higher time resolution than the pulse Doppler method. Second, the system does not have a limitation in maximum measurable velocity, which is limited by Nyquist’s sampling theorem. In this paper, the velocity profile measurement using the UTDC is performed, and the velocity profiles measured by the UTDC is compared with the one obtained using the pulse Doppler method. The result showed that aliasing effect occured by the measurement of the pulse Doppler method but does not occured by that of the UTDC at the same pulse repetation frequency.

An MHD Stirrer 2D Velocity Profile Measurement Validation Through a Machine Vision System

2019 ◽  
Author(s):  
Wendy Flores-Fuentes ◽  
Monica Valenzuela-Delgado ◽  
Felix F. Gonzalez-Navarro ◽  
Danilo Caceres-Hernandez ◽  
Oleg Sergiyenko ◽  
...  
Keyword(s):  
Machine Vision ◽  
Velocity Profile ◽  
Vision System ◽  
Profile Measurement ◽  
Machine Vision System ◽  
Velocity Profile Measurement ◽  
Measurement Validation

Ultrasonic Doppler Velocity Profile Measurement of Single-and Two-Phase Flows Using Spike Excitation

2016 ◽  
Vol 40 (4) ◽  
pp. 1235-1248 ◽  
Author(s):  
T. T. Nguyen ◽  
H. Murakawa ◽  
N. Tsuzuki ◽  
H. N. Duong ◽  
H. Kikura
Keyword(s):  
Velocity Profile ◽  
Doppler Velocity ◽  
Profile Measurement ◽  
Two Phase Flows ◽  
Two Phase ◽  
Velocity Profile Measurement
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