Fast prediction of noise level and air flow in rail vehicle HVAC ducts using a Modelica framework

Helmut Kühnelt (Vortragende:r), Thomas Bäuml, Anton Haumer, Gerhard Karlowatz

Publikation: Beitrag in Buch oder TagungsbandVortrag mit Beitrag in Tagungsband

Abstract

Design limits often let the manufacturer of HVAC systems for rail vehicles face the challenge in meeting the strict noise level limit as well as insuring the required air flow. We introduce a framework for fast joint calculation of acoustic and flow quantities in HVAC duct networks which is designed for concept modelling in an early construction stage. The acoustic domain is described by the band averaged sound power approach proposed in the VDI and ASHRAE guidelines, the fluid mechanic domain by pressure loss models. Flow-acoustic interaction is taken into account. Based on the object-oriented, equation based multi-domain modelling language Modelica the framework can be integrated into already existing Modelica libraries for various physical domains and is easily extendable. User-friendly simulation-setup in a GUI and external parameterization ensures persistent data management and a smooth workflow.
OriginalspracheEnglisch
TitelProceedings of Internoise 2010, 39th Internaional Congress on Noise Control Engineering
Seiten1-11
Seitenumfang11
PublikationsstatusVeröffentlicht - 2010
VeranstaltungInternoise 2010, 39th International Congress on Noise Control Engineering - Noise and Sustainability -
Dauer: 13 Juni 201016 Juni 2010

Konferenz

KonferenzInternoise 2010, 39th International Congress on Noise Control Engineering - Noise and Sustainability
Zeitraum13/06/1016/06/10

Research Field

  • Nicht definiert

Schlagwörter

  • HVAC noise prediction
  • two port theory
  • Modelica.

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