Nasal airflow has not yet been definitively characterised. In addition, there is currently no accepted method to predict airflow in an individual nose, forcing surgeons to rely solely on subjective judgement when deciding whether a patient suffering nasal obstruction would benefit from surgery. The aim of this research was to develop accurate numerical models of nasal airflow to improve understanding of nasal airflow and to conceive a clinical tool to aid in decision-making process regarding nasal surgery. This work presents the largest series of nasal geometries studied to date. Nasal...