scholarly journals Effect of Number of Pulse Repetition and Noise on Velocity Profile Measurement in Ultrasonic Pulse Doppler Method

2013 ◽  
Vol 79 (799) ◽  
pp. 356-367
Author(s):  
Hideki MURAKAWA ◽  
Akira OUE ◽  
Katsumi SUGIMOTO ◽  
Nobuyuki TAKENAKA
Keyword(s):  
Velocity Profile ◽  
Ultrasonic Pulse ◽  
Pulse Repetition ◽  
Profile Measurement ◽  
Doppler Method ◽  
Velocity Profile Measurement ◽  
Pulse Doppler

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.

E204 Velocity profile measurements in a pipe flow using ultrasonic pulse Doppler method

2008 ◽  
Vol 2008.13 (0) ◽  
pp. 441-444
Author(s):  
Kenichi Tezuka ◽  
Michitsugu MORI ◽  
Takeshi SUZUKI ◽  
Sho HAMADA ◽  
Hiroshige KIKURA ◽  
...  
Keyword(s):  
Velocity Profile ◽  
Pipe Flow ◽  
Ultrasonic Pulse ◽  
Doppler Method ◽  
Pulse Doppler
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