Numerical Simulation on Vortex Evolution in the Realistic Human Upper Respiratory Tract

Dong Sun; Zhi Hui Guo; Li Ming Tang; Guang Dong Wang; Xin Xi Xu

doi:10.4028/www.scientific.net/AMM.446-447.1621

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 446-447Numerical Simulation on Vortex Evolution in the...

Numerical Simulation on Vortex Evolution in the Realistic Human Upper Respiratory Tract

Abstract:

The technology of CT scanning and 3D reconstruction were used to construct 3D model of realistic human upper respiratory tract, and the method of large eddy simulation was used to simulate the process of vortex evolution in the model subtly. The results show that, several vortex tubes with low vortex intensity are formed in the rear of mouth; transition occurred in the pharynx, and the vortex structures break up rapidly; fully developed turbulence appeared in trachea, and several vortexes the shapes of which are similar to the wall of trachea appeared on the anterior wall of trachea; the large-scale vortex breaks up the small-scale vortex structures gradually in the bronchi.

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Periodical:

Applied Mechanics and Materials (Volumes 446-447)

Pages:

1621-1624

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.446-447.1621

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Online since:

November 2013

Authors:

Dong Sun, Zhi Hui Guo, Li Ming Tang, Guang Dong Wang, Xin Xi Xu

Keywords:

Evolution, Large Eddy Simulation, Realistic Human Upper Respiratory Tract, Vortex

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