Voxel-based simulation of air-conditioning in the human nasal cavity

Gaku Tanaka, Fuyuto Araki, Shun Shimizu, Toshihiro Sera, Hideo Yokota, Kenji Ono

Research output: Contribution to conferencePaper

Abstract

This work describes a new approach to simulate the airflow and air-conditioning in the individual human nasal airways using voxel-based modeling with Cartesian structured grid. Computed tomography imaging scans of a healthy adult nose were used to reconstruct 3D virtual models of the nasal airways. Voxel-based simulation of quiet restful inspiratory flow was then performed using meshes of varying refinement to determine the level of mesh refinement required to adequately resolve the flow and heat transfer. For meshes with a voxel pitch of 0.20 mm or less, the voxel model successfully reconstruct the realistic nasal structure and simulate the overall pressure drop and airflow temperature. The resultant streamlines and vorticity distributions reveal the characteristic flow structure in the nasal cavities, with high speed jet posterior to the nasal valve, recirculating flow that occupies the anterior part of the upper cavity, and low speed flow in the olfactory region. It was also found that the impinging jet plays an important role in the air-conditioning performance in the nasal cavities.

Original languageEnglish
Publication statusPublished - Jan 1 2014
Event15th International Heat Transfer Conference, IHTC 2014 - Kyoto, Japan
Duration: Aug 10 2014Aug 15 2014

Other

Other15th International Heat Transfer Conference, IHTC 2014
CountryJapan
CityKyoto
Period8/10/148/15/14

Fingerprint

Three dimensional computer graphics
fighter aircraft
air conditioning
Computerized tomography
Medical applications
Computational methods
Air conditioning
Numerical methods
heat transfer
Heat transfer
cavities
Flow structure
Vorticity
Pressure drop
Tomography
mesh
simulation
Imaging techniques
flow characteristics
pressure drop

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Condensed Matter Physics

Cite this

Tanaka, G., Araki, F., Shimizu, S., Sera, T., Yokota, H., & Ono, K. (2014). Voxel-based simulation of air-conditioning in the human nasal cavity. Paper presented at 15th International Heat Transfer Conference, IHTC 2014, Kyoto, Japan.

Voxel-based simulation of air-conditioning in the human nasal cavity. / Tanaka, Gaku; Araki, Fuyuto; Shimizu, Shun; Sera, Toshihiro; Yokota, Hideo; Ono, Kenji.

2014. Paper presented at 15th International Heat Transfer Conference, IHTC 2014, Kyoto, Japan.

Research output: Contribution to conferencePaper

Tanaka, G, Araki, F, Shimizu, S, Sera, T, Yokota, H & Ono, K 2014, 'Voxel-based simulation of air-conditioning in the human nasal cavity' Paper presented at 15th International Heat Transfer Conference, IHTC 2014, Kyoto, Japan, 8/10/14 - 8/15/14, .
Tanaka G, Araki F, Shimizu S, Sera T, Yokota H, Ono K. Voxel-based simulation of air-conditioning in the human nasal cavity. 2014. Paper presented at 15th International Heat Transfer Conference, IHTC 2014, Kyoto, Japan.
Tanaka, Gaku ; Araki, Fuyuto ; Shimizu, Shun ; Sera, Toshihiro ; Yokota, Hideo ; Ono, Kenji. / Voxel-based simulation of air-conditioning in the human nasal cavity. Paper presented at 15th International Heat Transfer Conference, IHTC 2014, Kyoto, Japan.
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