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Fluid simulation

Aurélien

Author: Aurélien RUMIANO · 5 August 2026
200300 0600 0 mm² HIGH Mean section Normal 200–300 mm²
717 030 0 Pa LOW Nasal resistance Normal 7–17 Pa

Introduction

Parameters of the study. Flow used for the fluid study 15 l/min. Inspiration phase. Mucosa at 34 °C.
Disclaimer. I am neither a fluid mechanics researcher nor a doctor. The results I obtain using my fluid simulation software may be approximate. The purpose of these fluid simulations is to give you an idea of the air flow and possible problems related to it.

The illustration below represents the nasal cavity, the anterior part in red, the middle meatus in green and finally the inferior meatus in blue.

The following illustration represents the negative of the nasal cavity, that is to say the air which is inside the nasal cavity. All illustrations that follow will be represented in this manner. The block that sticks the nostrils simply represents the air around it.

Nasal cavity: anterior part (red), middle meatus (green), inferior meatus (blue).
Nasal cavity: anterior part (red), middle meatus (green), inferior meatus (blue).
3D model
3D model

CT-scan

Cut 1
Cut 1
Cut 2
Cut 2
Cut 3
Cut 3

Right side: We can see that the right turbinate is almost completely cuted, just a little bit of the head remains. In red it is a cartilage implant mostly positionned in the anterior part.

Left side: On the left side we can say that around 50% of the left turbinate is missing.

We can also see that the septum is still twisted despite septoplasty. The right middle turbinate is almost absent due to the twisted nasal septum which has compressed it.

Airflow velocity