Importance of paranasal sinuses in computational modeling of nasal airflow
2009 (English)In: 47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition, AIAA , 2009, 2009-0772- p.Conference paper (Refereed)
This paper investigates the importance of including paranasal sinuses in the computational modeling of the nasal airflow. Three dimensional models of human nasal airway with and without including paranasal sinuses were reconstructed from Computed Tomography (CT) axial images of a subject with healthy nasal airway. The reconstruction process was performed using MIMICS® software program. The airway volume was discretized using TGRID® mesh generator. Steady Reynolds-Averaged Navier-Stokes (RANS) simulations were carried in both inspiratory and expiratory phases of respiratory cycle at a peak flow rate of 15 L/min in FLUENT®. The results show that the left and right nasal resistances change with less than 11% when paranasal sinuses are included in the computational model of the nasal airway. The flow into the sinuses is characterized by very low velocities during both inspiration and expiration conditions. The velocity distributions in the main nasal passage show small change predominantly in regions closer to the paranasal sinuses when compared to the model where sinuses were not included.
Place, publisher, year, edition, pages
AIAA , 2009. 2009-0772- p.
Fluid Mechanics and Acoustics Medical Image Processing Otorhinolaryngology Respiratory Medicine and Allergy
IdentifiersURN: urn:nbn:se:kth:diva-48489ISBN: 978-156347969-4OAI: oai:DiVA.org:kth-48489DiVA: diva2:457747
47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition; Orlando, FL; 5 January 2009 through 8 January 2009
QC 201111222011-11-182011-11-182011-11-22Bibliographically approved