Figure 5.

Profiles of velocity magnitude normalized by mean velocity (U*) are shown for subjects A (left) and B (right), and for each inflow configuration. The streamlines indicate in-plane velocity while the flooded contours represent the normalized magnitude of velocity. Again, the calibre of subject B can be seen to be much greater than that of subject A. For both subjects the application of a flat (vertical) velocity profile at the nostril forces fluid into the apex of the nasal valve, in marked contrast to the pipe inflow and face configurations, where peak flow is located to the posterior and inferior portions of the nostril and nasal valve, respectively.