Numerical analysis of the ostiomeatal complex aeration using the CFD method.

Area of Science:

• Biomedical Engineering
• Medical Imaging
• Computational Science

Background:

• The ostiomeatal complex (OMC) is crucial for sinus drainage.
• Understanding airflow dynamics within the OMC is essential for diagnosing and treating sinonasal diseases.
• Nasal septal deviation (NSD) can alter sinonasal airflow patterns.

Purpose of the Study:

• To analyze ostiomeatal complex (OMC) aeration using computational fluid dynamics (CFD) simulations.
• To compare airflow patterns in patients with normal nasal anatomy versus those with nasal septal deviation (NSD).

Main Methods:

• Utilized computational fluid dynamics (CFD) simulations based on human craniofacial computed tomography (CT) scans.
• Employed the Reynolds-Average Simulation approach with a k-ε SST turbulence model.
• Analyzed CT scans from two patients: one with normal nasal anatomy and one with NSD.

Main Results:

• Observed distinct differences in airflow velocity through the OMC between normal and NSD patients.
• Identified turbulent airflow in the OMC of the NSD patient, contrasting with laminar flow in the normal patient.
• Noted faster airflow in the wider nasal cavity of the NSD patient compared to the narrower side.

Conclusions:

• CFD simulations effectively demonstrate altered airflow dynamics in the OMC due to NSD.
• Turbulent airflow and increased velocity in the OMC of NSD patients may influence sinonasal health.
• Higher airflow speed towards the OMC during exhalation in NSD patients could facilitate mucus penetration into anterior sinuses.