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  • Computer vision system as a tool for the analysis of turbulent mixing flows
    Novak, Matej, 1968- ; Širok, Brane ; Hočevar, Marko, strojnik, 1972-
    To investigate the technical properties of the computer aided visualization system as a tool for analysis of the behaviour of hydraulic machinery and particularly for a detection of cavitation as one ... of the most important features, an experimental study using computer-aided visualization was made on a relative transparent physical object - bluff body in a compressible fluid. The study of the turbulent mixing flow in the wake of a prismatic bluff body was performed in a non-return subsonic wind tunnel using flow visualization and a digital image-processing technique. A high-speed camera was used to capture smoke visualization images of the turbulent mixing flow structures and quantitative analysis was made on time series, obtained by simultaneous digitization of the grey level in several small areas (windows) of the overall image. Turbulent mixing structures in the wake exhibited various time signals and corresponding power spectra, which have been associated with space and time evolution of concentration fields. The results correspond well to the published velocity and concentration results and confirm that the computer vision system is an accurate and useful tool for the analysis of the behaviour of hydraulic machines.
    Vir: The behavior of hydraulic machinery under steady oscillatory conditions : proceedings of the 9th meeting held in Brno on September 7-9, 1999 (C2 (11 str.))
    Vrsta gradiva - prispevek na konferenci
    Leto - 1999
    Jezik - angleški
    COBISS.SI-ID - 3306267

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