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Biomechanics and Modeling in Mechanobiology

, Volume 17, Issue 2, pp 465–477 | Cite as

Simulation of the human airways using virtual topology tools and meshing optimization

  • A. Fernández-Tena
  • A. C. Marcos
  • R. Agujetas
  • C. FerreraEmail author
Original Paper
  • 237 Downloads

Abstract

A method is proposed to improve the quality of the three-dimensional airway geometric models using a commercial software, checking the number of elements, meshing time, and aspect ratio and skewness parameters. The use of real and virtual topologies combined with patch-conforming and patch-independent meshing algorithms results in four different models being the best solution the combination of virtual topology and patch-independent algorithm, due to an excellent aspect ratio and skewness of the elements, and minimum meshing time. The result is a reduction in the computational time required for both meshing and simulation due to a smaller number of cells. The use of virtual topologies combined with patch-independent meshing algorithms could be extended in bioengineering because the geometries handling is similar to this case. The method is applied to a healthy person using their computed tomography images. The resulting numerical models are able to simulate correctly a forced spirometry.

Keywords

Human airways CT images CFD Virtual topology Meshing optimization 

Notes

Acknowledgements

Thanks to Dr. Alejo, Servicio Radiología (Hospital IC, Badajoz), who provided the images of this study. This work was financially supported by Junta de Extremadura under Project “Ayudas para la realización de actividades de investigación y desarrollo tecnológico, de divulgación y de transferencia de conocimiento por los Grupos de Investigación de Extremadura (GR150014)” and Sociedad Asturiana de Patología Respiratoria under project Experimental and numerical study of a three-dimensional model of an asthmatic patient airways reconstructed from CT or MR images.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

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Copyright information

© Springer-Verlag GmbH Germany 2017

Authors and Affiliations

  1. 1.Universidad de Oviedo and Hospital Universitario Central de AsturiasOviedoSpain
  2. 2.Dpto. de Expresión GráficaUniversidad de ExtremaduraBadajozSpain
  3. 3.Dpto. de Ingeniería Mecánica, Energética y de los Materiales and Instituto de Computación Científica Avanzada (ICCAEx)Universidad de ExtremaduraBadajozSpain

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