Prediction of noise in industrial halls

  • Christensen, Claus Lynge (Project Participant)
  • Rindel, Jens Holger (Project Manager)

    Project Details

    Description

    The ODEON program has been further developed in 1997. A completely new version has been developed for Windows95. Currently research is directed towards improving the model for calculations in industrial environment, where the sound sources cannot be considered to be point sources. Typically the sources are very large and contribute with reflecting surfaces to the room. Therefore, surface sources and line sources have been developed in addition to point sources with frequency dependent directivity. The frequency range of the calculations has been extended to eight octave bands covering the range from 63 Hz to 8 kHz. As a special new feature it has been made possible to define surfaces as partly transparent. This is useful in modelling industrial halls.
    The program has recently been verified by Elsamprojekt. In a turbine hall at a power plant the A-weighted sound pressure level was measured at twelve receiving points and compared with the levels estimated by the ODEON program. The room was modelled by 54 surfaces, and sound sources were modelled by 30 surface sources (the surfaces of two turbines) and four point sources (bullet bearings). Relevant data for radiated sound power were measured with the intensity method. The test results show very high correlation between measured and estimated results, the average deviation being less than 1 dB.
    The project is carried out in collaboration with I/S Elsam, Elkraft A.m.b.A. and Elsamprojekt A/S Power Station Engineering.
    StatusFinished
    Effective start/end date01/01/199630/12/1997

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