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    Wyświetlanie 1-3 z 3
    Tytuł:
    Chaotic air pressure fluctuations during departure of air bubbles from two neighbouring nozzles
    Autorzy:
    Mosdorf, R.
    Wyszkowski, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/240151.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    dynamika
    dynamika chaotyczna
    pęcherze
    bubble chain
    bubble dynamics
    chaotic dynamics
    Opis:
    In the experiment, bubbles were generated from two brass nozzles with inner diameters of 1.1 mm. They were submerged in the glass tank filled with distilled water. There have been measured the air pressure fluctuations and the signal from the laser-phototransistor sensor. For analysis of the pressure signal the correlation (the normalized cross - correlation exponent) and non-linear analyses have been used. It has been shown that hydrodynamic interactions between bubbles can lead to bubble departure synchronization. In this case the bubble departures become periodic. The results of calculation of correlation dimension and the largest Lyapunov exponent confirm that hydrodynamic bubble interactions observed for 4 mm spacing between nozzels cause the periodic bubble departures from two neighbouring nozzles.
    Źródło:
    Archives of Thermodynamics; 2012, 33, 1; 123-137
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dynamics of bubble-particle interaction in different flotation processes and applications - a review of recent studies
    Autorzy:
    Patnaik, Nelesh
    Menon, Aditya
    Gupta, Tapesh
    Joshi, Vijesh
    Powiązania:
    https://bibliotekanauki.pl/articles/1450499.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    flotation
    bubble-particle interaction
    bubble dynamics
    multiphase flow
    fluid interface
    Opis:
    Flotation process involves aggregation of the particles based on the material/compound type of random mixtures such as ores and seawater. It is primarily used in pretreatment of water desalination and other industrial applications. The process makes use of various fluid mechanics principles as multifluids are involved. The multi-fluids in most of the flotation processes are of different phases, such as air and water. Like any other process, the efficiency of flotation is important, and hence most of the studies have been dedicated to understanding how the various parameters are affecting the flotation process. Among various parameters, fluids properties and flow parameters chiefly affect the flotation process. In particular, the bubble-particle interaction of the flotation process has been of interest as it is one of the cost-effective ways to enhance flotation efficiency. In this review, the authors present the latest developments in such parametric studies. This paper could be of interest to research students, academic researchers, and practitioners who want to contribute to (or take from) flotation research.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2020, 56, 6; 206-224
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Multifractal properties of large bubble paths in a single bubble column
    Autorzy:
    Mosdorf, R.
    Wyszkowski, T.
    Dąbrowski, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/240028.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    kolumna barbotażowa
    metoda WTMM
    pęcherze
    bubble column
    bubble dynamics
    WTMM method
    Opis:
    In the paper the paths of bubbles emitted from the brass nozzle with inner diameter equal to 1.6 mm have been analyzed. The mean frequency of bubble departure was in the range from 2 to 65.1 Hz. Bubble paths have been recorded using a high speed camera. The image analysis technique has been used to obtain the bubble paths for different mean frequencies of bubble departures. The multifractal analysis (WTMM - wavelet transform modulus maxima methodology) has been used to investigate the properties of bubble paths. It has been shown that bubble paths are the multifractals and the influence of previously departing bubbles on bubble trajectory is significant for bubble departure frequency f[b] > 30 Hz.
    Źródło:
    Archives of Thermodynamics; 2011, 32, 1; 3-20
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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