Inscrição na biblioteca: Guest
Portal Digital Begell Biblioteca digital da Begell eBooks Diários Referências e Anais Coleções de pesquisa
International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.5

ISSN Imprimir: 2152-5102
ISSN On-line: 2152-5110

Volumes:
Volume 46, 2019 Volume 45, 2018 Volume 44, 2017 Volume 43, 2016 Volume 42, 2015 Volume 41, 2014 Volume 40, 2013 Volume 39, 2012 Volume 38, 2011 Volume 37, 2010 Volume 36, 2009 Volume 35, 2008 Volume 34, 2007 Volume 33, 2006 Volume 32, 2005 Volume 31, 2004 Volume 30, 2003 Volume 29, 2002 Volume 28, 2001 Volume 27, 2000 Volume 26, 1999 Volume 25, 1998 Volume 24, 1997 Volume 23, 1996 Volume 22, 1995

International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v25.i4-6.280
pages 763-769

Flow Field Measurement Method by Means of Time-Averaged Contrast of Images

T. Okuno
Department of Naval Architecture, University of Osaka, Osaka, Japan
S. Nishio
Department of Naval Architecture, University of Osaka, Osaka, Japan
Y. Yoshino
Department of Naval Architecture, University of Osaka, Osaka, Japan

RESUMO

A new image measurement method for obtaining time-mean velocity field is proposed. The so-called time-averaged contrast is a statistical parameter of image data. Its characteristics are examined in detail with a simple mathematical model for particle images. It is found that the variance of image data gives the time-averaged contrast and the velocity of the particles in the case that the averaged intensity of the image data is constant in time. Numerical simulation shows the possibility of practical measurement.


Articles with similar content:

FLOW FIELD MEASUREMENT METHOD BY MEANS OF TIME-AVERAGED CONTRAST OF IMAGES
Transport Phenomena in Thermal Engineering. Volume 2, Vol.0, 1993, issue
Y. Yoshino, S. Nishio, T. Okuno
VISUALIZATION OF BOUNDARY LAYER TRANSITION BY VISCOUS OIL
Visualization of Mechanical Processes: An International Online Journal, Vol.2, 2012, issue 1
Vladimir Nikolaevich Radchenko, Vladimir Evguenyevich Mosharov
PARTICLE IMAGE SURFACE FLOW VISUALIZATION: STEP TO SKIN-FRICTION MEASUREMENT
Visualization of Mechanical Processes: An International Online Journal, Vol.7, 2017, issue 2
Vladimir Nikolaevich Radchenko, Vladimir Evguenyevich Mosharov, Nikolai Tsipilev
MULTIDIMENSIONAL, NONHOMOGENEOUS, DENSE SPRAY CONTRIBUTIONS TO DIFFRACTION-BASED PARTICLE SIZE DISTRIBUTION MEASUREMENTS
Atomization and Sprays, Vol.5, 1995, issue 2
James E. Peters, Christine M. Woodall, Richard O. Buckius
PATTERN TRACKING USING GRAY LEVEL DIFFERENCES AND ITS APPLICATION TO LOW VELOCITY AIRFLOW MEASUREMENT
Transport Phenomena in Thermal Engineering. Volume 2, Vol.0, 1993, issue
Katsuhito Yamaguchi, Akikazu Kaga, Yoshio Inoue