2017/06/08 by Elin Aasgrav, Sverre Gullikstad Johnsen, Aasgrav, Elin +5
Medicine · #FOS: Physical sciences #Fluid Dynamics (physics.flu-dyn) #Infection Control and Ventilation #Inhalation and Respiratory Drug Delivery #Medical Physics (physics.med-ph) #Respiratory Support and Mechanisms
paper · pdf · doi:10.48550/arxiv.1706.02565
openalex publication_date 2017/06/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In this paper, investigations are conducted using Reynolds-averaged Navier-Stokes (RANS) turbulence models to investigate the importance of turbulence modelling for nasal inspiration at a constant flow rate of 250 ml/s. Four different, standard turbulence models are tested in a model geometry based on pre-operative CT images of a selected obstructive sleep-apnea syndrome (OSAS) patient. The results show only minor differences between them. Furthermore, the turbulence models do not give significantly different results than a laminar flow model. Thus, the main conclusion is that effects of turbulence are insignificant in CFD modelling of the airflow in the pre-operative model of the upper airways of the chosen patient.