Elevator wind noise

Research output: Contribution to conferenceConference AbstractScientific

Abstract

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
Event8th Vibro-Acoustic Simulation Conference, VAUC 2015 - Munich, Germany
Duration: 2 Dec 20153 Dec 2015
Conference number: 8

Conference

Conference8th Vibro-Acoustic Simulation Conference, VAUC 2015
Abbreviated titleVAUC 2015
CountryGermany
CityMunich
Period2/12/153/12/15

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acoustics
charge flow devices
lessons learned
hydrodynamics
boundary conditions
predictions

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Tanttari, J. (2015). Elevator wind noise. Abstract from 8th Vibro-Acoustic Simulation Conference, VAUC 2015, Munich, Germany.
Tanttari, Jukka. / Elevator wind noise. Abstract from 8th Vibro-Acoustic Simulation Conference, VAUC 2015, Munich, Germany.
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title = "Elevator wind noise",
abstract = "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.",
author = "Jukka Tanttari",
year = "2015",
language = "English",
note = "8th Vibro-Acoustic Simulation Conference, VAUC 2015, VAUC 2015 ; Conference date: 02-12-2015 Through 03-12-2015",

}

Tanttari, J 2015, 'Elevator wind noise' 8th Vibro-Acoustic Simulation Conference, VAUC 2015, Munich, Germany, 2/12/15 - 3/12/15, .

Elevator wind noise. / Tanttari, Jukka.

2015. Abstract from 8th Vibro-Acoustic Simulation Conference, VAUC 2015, Munich, Germany.

Research output: Contribution to conferenceConference AbstractScientific

TY - CONF

T1 - Elevator wind noise

AU - Tanttari, Jukka

PY - 2015

Y1 - 2015

N2 - 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.

AB - 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.

M3 - Conference Abstract

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Tanttari J. Elevator wind noise. 2015. Abstract from 8th Vibro-Acoustic Simulation Conference, VAUC 2015, Munich, Germany.