scholarly journals Glow Discharge-Tracer Technique for Velocity Profile Measurement in Hypersonic Boundary Layer Flows

2005 ◽  
Vol 53 (615) ◽  
pp. 154-159 ◽  
Author(s):  
Hajime Itoh
Keyword(s):  
Boundary Layer ◽  
Glow Discharge ◽  
Velocity Profile ◽  
Profile Measurement ◽  
Hypersonic Boundary Layer ◽  
Tracer Technique ◽  
Boundary Layer Flows ◽  
Velocity Profile Measurement

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

A Fast Approximate Solution of the Laminar Boundary-Layer Equations

1986 ◽  
Vol 108 (2) ◽  
pp. 200-207 ◽  
Author(s):  
Sei-ichi Iida ◽  
Akira Fujimoto
Keyword(s):  
Boundary Layer ◽  
Velocity Profile ◽  
Computational Time ◽  
Computational Techniques ◽  
Boundary Layer Flows ◽  
Boundary Layer Equations ◽  
Laminar Boundary Layers ◽  
Layer Characteristic ◽  
Comparison Of The Results ◽  
Steady Laminar

A new approximate method of calculating steady laminar boundary-layers is presented. This method is based on the mutual relationships between boundary-layer characteristic quantities. The governing equations are efficiently solved without assuming a specific velocity profile. Moreover, a method of estimating the velocity profile using the characteristic quantities is also proposed. Comparison of the results obtained for a wide variety of applications to boundary-layer flows with separations with exact solutions indicates that the present method enables one to obtain solutions with sufficient accuracy and shorter computational time when compared with existing computational techniques.

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

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.

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