Description AC7-02
Airflow in the human upper airways
Application Challenge AC7-02 © copyright ERCOFTAC 2020
Description
Introduction
In the current application challenge (AC), in vitro velocity measurements using particle image velocimetry (PIV), Large Eddy Simulations (LES) and Reynolds-Averaged Navier-Stokes (RANS) have been conducted in a human-based model of the upper airways (shown in figure 3). This AC is a direct follow up of the application challenge “AC7-01:Aerosol deposition in the human upper airways” and provides the corresponding flow velocity data. The investigations were performed for steady-state inhalation at a flow rate of 60 L/min. The flow conditions at these flowrates are in the turbulent regime. LES and RANS simulations were carried out in the same geometry and under the same ventilation conditions. The methods and results described in the present application challenge are mainly adopted from Janke et al. (2019) (experimental part) and Koullapis et al. (2018) (numerical part).
Relevance to Industrial Sector
Design or Assessment Parameters
Flow Domain Geometry
Digital reference model of bronchial tree
The oral cavity
Manufacturing of the physical model for flow measurements
Limitations of the model
Flow Physics and Fluid Dynamics Data
Contributed by: P. Koullapisa —
aDepartment of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia, Cyprus
© copyright ERCOFTAC 2020