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A simplified 3d model for fluid simulation

I designed a simplified 3d model of a nasal cavity (just one side) to test different scenarios such as adding an implant. You can see that I grouped the superior turbinate and the middle turbinate in order to simplify the model. I need a simple model because it is better to make future geometry change.

The model is simpler but it respects the cross-sectional area of my real nasal cavity, you can see my post about the cross-sectional area measurements that I have written here. Also as you can see it simulates a pretty large inferior turbinectomy and a total turbinectomy in the middle section area. For the flow I took 7.5l/min, it is the respiratory flow at rest. Here are the first results I get...

The airflow in the area of the absent inferior turbinate swirls and is very slow (less than 0.6m/s) unlike the airflow in the area of the middle turbinate (about 3m/s). This is not very surprising, it can be seen in quite a few CFD studies on empty nose syndrome. The speed values also match which means that my 3d model and the flow rate value taken are pretty accurate.

In the coronal section view, we can see that the velocity is higher between the middle turbinate and the septum but also in the zone at the bottom of the middle turbinate.

Now what I can say about these results is that too low airflow velocity greatly reduces sensations in the area of the absent inferior turbinate (inferior meatus). This is one of the big problems of the ENS.

In future articles, I will simulate an implant in the inferior meatus zone to see the change in airflow.

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