Journal of the Korean Society of Visualization (한국가시화정보학회지)

The Korean Society of Visualization (한국가시화정보학회)
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Numerical Simulation of Air Flows in Human Upper Airway for Free Flap Reconstruction Following Resection Surgery in Oral Cancer Patients

구강암 절제 및 재건 수술에 따른 기도 내 공기 유동 시뮬레이션

  • Seo, Heerim (School of Mechanical Engineering, PNU) ;
  • Song, Jae Min (Department of Oral and Maxillofacial Surgery, School of Dentistry, PNU) ;
  • Yeom, Eunseop (School of Mechanical Engineering, Pusan National University (PNU))
  • Received : 2020.11.04
  • Accepted : 2020.12.20
  • Published : 2020.12.31
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Abstract

Oral cancer surgery changes the morphologic characteristics of the human upper airway. These changes can affect the flow patterns. In this study, computational fluid dynamics (CFD) simulations with transient solver were performed to numerically investigate the air flows in the human upper airways depending oral cancer surgery. 3D reconstructed models were obtained from 2D CT images of one patient. For the boundary condition, the realistic breathing cycle of human was applied. The hydraulic diameters of cross-sections for post-surgical model are changed greatly along streamwise direction, so these variations can cause higher wall shear stress and flow disturbance compared to pre-surgical model. The recirculation flows observed in the protruding region result in the relatively large pressure drop. These results can be helpful to understand the flow variations after resection surgery of oral cancer.

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References

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