title: Numerical investigation of the flow field in realistic nasal septal perforation geometry.
abstract: The computational fluid dynamics (CFD) are used to evaluate the physiological function of the nose. We evaluated the aerodynamics of the nasal cavity in a patient with septal perforation (SP), pre- and postvirtual repair. Three-dimensional nasal models were reconstructed, and then a wide range of the pressure drops and flow rates were analyzed. The airflow velocity is higher in the central region and is lower around the boundary of the SP. The air velocity in the SP increases as the pressure drop increases. Furthermore, at the anterior part of the SP, the shear stress is higher in the upper part. In addition, the repair of SP does not affect the total nasal airflow rate and the velocity contour patterns. The potential usage of the CFD technique as a predictive technique to explore the details and a preoperative assessment tool to help in clinical decision making in nasal surgery is emphasized.
authors.affiliation: Department of Otolaryngology, Head and Neck Surgery, Shiraz University of Medical Sciences, Shiraz, Iran.
authors.forename: Mohammad
authors.initials: M
authors.lastname: Faramarzi
authors.forename: Mohammad Hossein
authors.initials: MH
authors.lastname: Baradaranfar
authors.forename: Omid
authors.initials: O
authors.lastname: Abouali
authors.forename: Saeid
authors.initials: S
authors.lastname: Atighechi
authors.forename: Goodarz
authors.initials: G
authors.lastname: Ahmadi
authors.forename: Pejman
authors.initials: P
authors.lastname: Farhadi
authors.forename: Erfan
authors.initials: E
authors.lastname: Keshavarzian
authors.forename: Nasim
authors.initials: N
authors.lastname: Behniafard
authors.forename: Amin
authors.initials: A
authors.lastname: Baradaranfar