Flows near Solid Walls: LDA Measurement Instruments and Data Acquisition (Contributo in atti di convegno)

Type
Label
  • Flows near Solid Walls: LDA Measurement Instruments and Data Acquisition (Contributo in atti di convegno) (literal)
Anno
  • 1989-01-01T00:00:00+01:00 (literal)
Alternative label
  • F. Di Felice·, D. Pietrogiacomi, G.P. Romano (1989)
    Flows near Solid Walls: LDA Measurement Instruments and Data Acquisition
    in 4th International Conference on Computational Methods and Experimental Measurements, Capri, Italy, Maggio 1989
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • F. Di Felice·, D. Pietrogiacomi, G.P. Romano (literal)
Pagina inizio
  • 44 (literal)
Pagina fine
  • 53 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://books.google.it/books?id=U2NClAEACAAJ (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#titoloVolume
  • Computers and Experiments in Fluid Flow (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Italian Center of Aerospace Research - GIRA Department of Mechanics and Aeronautics - University od rome Italian Towing Tank - INSEAN - Rome (literal)
Titolo
  • Flows near Solid Walls: LDA Measurement Instruments and Data Acquisition (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#isbn
  • 9780387511108 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#curatoriVolume
  • Giovanni M. Carlomagno (literal)
Abstract
  • In approaching solid walls it could be very difficult to recognize the velocity information from the signal of a laser Doppler system: high noise levels and low data rates are always present. The tracking and counting techniques arc not so well suited in these situations; a new generation of instruments, based on auto-correlation and FFT techniques, avoids the previous problems and allows the working also with very low signal to noise ratios. A comparison between the behavior of the old (Tracker and Counter) and new (Burst Spectrum Analyzer, BSA) signal processors has been performed, measuring;: the profiles of statistical moments and the power-spectra in a turbulent boundary layer. The Doppler signals have been processed using sampling procedures on the time history of the velocity to obtain time-equispaced data sets. Plots of the first four statistical moments and of the power-spectra in several points of a rectangular duct have been achieved. A careful comparison with previous results has been also performed. (literal)
Editore
Autore CNR

Incoming links:


Autore CNR di
Editore di
data.CNR.it