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Étude de simulation pour prédire le bruit généré par l’écoulement à proximité du dispositif de détente.

Simulation-based study on predicting the flow-induced noise near the expansion device.

Numéro : 210039

Auteurs : ZHANG Y., ELBEL S.

Résumé

The flow-induced noise near the expansion device can be very disturbing to users. Studies related to the relationship between the flow-induced noise and flow regimes are calling more and more attention in recent decades. However, current studies lack a quantitative relationship between flow characteristics and the flow-induced noise. Therefore, in this paper, a noise-prediction model is proposed to predict the sound pressure level of flow-induced noise. The paper utilizes a pumped R134a loop with a needle valve for synchronized measurements between flow-induced noise and flow regimes. Synchronized high-speed measurements obtained from a microphone and a high-speed camera enable simultaneous investigation of flow-induced noise and flow regimes. Both the experimental results and the modeling results show that the sound pressure level of gurgling noise increases as the flow quality increases or the system mass flux increases. The relative error of the model for most prediction of flow-induced noise is less than 15%. However, in some high-quality cases, such as annular flow-induced noise, the prediction does not predict the noise well.

Documents disponibles

Format PDF

Pages : 8

Disponible

  • Prix public

    20 €

  • Prix membre*

    15 €

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Simulation-based study on predicting the flow-induced noise near the expansion device.
  • Identifiant de la fiche : 30028609
  • Langues : Anglais
  • Sujet : Technologie
  • Source : 2021 Purdue Conferences. 18th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Date d'édition : 05/2021
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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