Elevator wind noise

Jukka Tanttari

    Research output: Contribution to conferenceConference AbstractScientific

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    This presentation deals with prediction of high-rise elevator wind noise in reverberant shaft environment. A double-decker elevator, going downwards with speed of 10 m/s, is used as an example. In order to predict wind noise in an elevator car, two types of loads are needed: 1) turbulent pressure fluctuations (pseudo-sound, convective part, "TBL") and 2) acoustic pressure fluctuations (sound) on elevator surfaces. The starting point in the extraction of these loads is pressure data on elevator surfaces, solved using an incompressible, unsteady, scale-resolving CFD model. Parameters of the TBL loads are extracted by fitting the raw CFD data to a Corcos model at selected surfaces. The acoustic field is solved using an acoustic BEM model of the volume between the elevator and shaft walls. In BEM model, CFD pressure is used as a hydrodynamic pressure boundary condition on a rigid wall, according to the Curle's acoustic analogy.Building of the various models, results of load extractions, validity of load data and models as well as certain acoustic issues and lessons learned are presented and discussed.
    Original languageEnglish
    Publication statusPublished - 2015
    MoE publication typeNot Eligible
    Event8th Vibro-Acoustic Simulation Conference, VAUC 2015 - Munich, Germany
    Duration: 2 Dec 20153 Dec 2015
    Conference number: 8


    Conference8th Vibro-Acoustic Simulation Conference, VAUC 2015
    Abbreviated titleVAUC 2015


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