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Étude numérique du bruit et des vibrations aérodynamiques dus à un jet de gaz de refoulement pulsé dans les compresseurs hermétiques.

Numerical study of the aerodynamic noise and vibration due to pulsive discharge gas jet in hermetic compressors.

Numéro : 1415

Auteurs : HE D., CUI Y., ZIVIANI D., LIU Y.

Résumé

The turbulent nature of refrigerant discharge flow and complicated flow path in hermetic compressors potentially render flow induced noise a source of noise, vibration and harshness (NVH) effects during the operation of hermetic compressors. In the presented study on flow induced of hermetic compressors, a fluid-structure interaction simulation model was developed, where the interior refrigerant flow field and the structural vibration are coupled together. The thermomechanical aspects of compressor operation are resolved in the compressor mechanistic model, based on a compressor modelling platform developed in previous studies. The fluid-structure interaction simulation describes the two-way coupled interaction between the compressor discharge flow and hermetic shell vibration. The interior hermetic shell surface is subjected to turbulent fluid load due to compressor discharge, and the fluid domain is bounded by vibrating shell. Simulations were conducted to validate the models developed in the current work, and the exterior noise radiation is evaluated based on shell vibration to demonstrate how these modeling tools can help compressor manufacturers to gain better understanding of the physical reasons behind NVH effects of compressors.

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Pages : 10 p.

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Détails

  • Titre original : Numerical study of the aerodynamic noise and vibration due to pulsive discharge gas jet in hermetic compressors.
  • Identifiant de la fiche : 30030320
  • Langues : Anglais
  • Sujet : Technologie
  • Source : 2022 Purdue Conferences. 26th International Compressor Engineering Conference at Purdue.
  • Date d'édition : 15/07/2022
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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