Gradient-driven fluctuations experiment: fluid fluctuations in microgravity (Articolo in rivista)

Type
Label
  • Gradient-driven fluctuations experiment: fluid fluctuations in microgravity (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Alternative label
  • Vailati, A; Cerbino, R; Mazzoni, S; Giglio, M; Nikolaenko, G; Takacs, CJ; Cannell, DS; Meyer, WV; Smart, AE (2006)
    Gradient-driven fluctuations experiment: fluid fluctuations in microgravity
    in Applied optics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Vailati, A; Cerbino, R; Mazzoni, S; Giglio, M; Nikolaenko, G; Takacs, CJ; Cannell, DS; Meyer, WV; Smart, AE (literal)
Pagina inizio
  • 2155 (literal)
Pagina fine
  • 2165 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 45 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • INFM, CNR, I-20133 Milan, Italy; Univ Milan, Dipartimento Fis, I-20133 Milan, Italy; Univ Calif Santa Barbara, Dept Phys & iQCD, Santa Barbara, CA 93106 USA; NASA, Natl Ctr Space Explorat Res, Glenn Res Ctr, Cleveland, OH 44135 USA (literal)
Titolo
  • Gradient-driven fluctuations experiment: fluid fluctuations in microgravity (literal)
Abstract
  • We describe an experimental breadboard developed for the investigation of nonequilibrium fluctuations induced by macroscopic temperature and concentration gradients under microgravity conditions. Under these conditions the amplitude of the fluctuations diverges strongly for long wavelengths. The setup was developed at the University of Milan and at the University of California at Santa Barbara within the gradient-driven fluctuations experiment (GRADFLEX) project of the European Space Agency, in collaboration with the National Aeronautics and Space Administration. The apparatus uses a quantitative shadowgraph technique for characterization of the static power spectrum of the fluctuations S(q) and the measurement of their dynamics. We present preliminary experimental results for S(q) obtained in the presence of gravity for gradient-driven fluctuations for two cases, those induced in a liquid mixture with a concentration gradient produced by the Soret effect and those induced in a single-component fluid by a temperature gradient. (c) 2006 Optical Society of America. (literal)
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