Particle image velocimetry measurements for the study of nasal airflow

Kook Kim Jin, Joo Heon Yoon, Chang-Hoon Kim, Wook Nam Tae, Bo Shim Dae, Ae Shin Hyang

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Conclusions. Particle image velocimetry (PIV) permits investigation of the distribution and velocity of the airflow in the nasal cavity. During breathing, the main laminar flow stream passes through the middle meatus and turbulent flow can be detected under physiologic conditions. Objectives. Physical models or casts of the nasal cavity have been utilized in several studies in an effort to understand its aerodynamics. PIV is a new technique for measuring the aerodynamic properties of tubular structures. In this article we evaluate nasal airflow characteristics during physiologic breathing under normal conditions and the usefulness of PIV. Material and methods. A nasal model cast obtained by a combination of rapid prototyping and solidification of clear silicone was connected to a pump which simulated the physiological pressure in the upper airway system. A glycerol-water mixture was used as the flow material. The airstream was marked with spherical polyvinyl particles, observed through solidified clear silicone and analyzed using PIV. Results. The main flow within the cavity, which was mostly laminar, passed through the middle meatus. Turbulence was clearly visible in the anteroinferior part of the middle turbinate. The flow rate was highest at the middle meatus during inspiration and expiration.

Original languageEnglish
Pages (from-to)282-287
Number of pages6
JournalActa Oto-Laryngologica
Volume126
Issue number3
DOIs
Publication statusPublished - 2006 Mar 1

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All Science Journal Classification (ASJC) codes

  • Otorhinolaryngology

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