On quasi-steady laminar flow separation in the upper airways
Accurate prediction of the position of flow separation along a constriction is important to model fluid-structure interaction phenomena in the upper airways such as phonation and obstructive sleep apnea. Flow assumptions underlying common flow descriptions along the upper airways are formulated. Flo...
| Main Authors: | , , |
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| Format: | Journal Article |
| Published: |
John Wiley & Sons Ltd.
2009
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| Online Access: | http://hdl.handle.net/20.500.11937/20708 |
| _version_ | 1848750383526051840 |
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| author | Van Hirtum, A. Cisonni, Julien Pelorson, X. |
| author_facet | Van Hirtum, A. Cisonni, Julien Pelorson, X. |
| author_sort | Van Hirtum, A. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Accurate prediction of the position of flow separation along a constriction is important to model fluid-structure interaction phenomena in the upper airways such as phonation and obstructive sleep apnea. Flow assumptions underlying common flow descriptions along the upper airways are formulated. Flow separation positions obtained from theories with different degrees of complexity are qualitatively and quantitatively discussed. In particular, geometrical and flow features determining the influence of viscosity are varied. Increasing the constriction degree and the constriction length is shown to affect the position of flow separation. Boundary layer solutions and simulations with the two-dimensional Navier Stokes equations result in an accurate quantitative prediction of flow separation. Furthermore, Jeffery-Hamel flow solutions qualitatively predict the effect of both constriction height and length on the position of flow separation. The ad hoc assumption applied in quasi-one-dimensional flow descriptions does not accurately predict flow separation. Copyright © 2008 John Wiley & Sons, Ltd. |
| first_indexed | 2025-11-14T07:35:58Z |
| format | Journal Article |
| id | curtin-20.500.11937-20708 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:35:58Z |
| publishDate | 2009 |
| publisher | John Wiley & Sons Ltd. |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-207082017-09-13T13:49:37Z On quasi-steady laminar flow separation in the upper airways Van Hirtum, A. Cisonni, Julien Pelorson, X. Accurate prediction of the position of flow separation along a constriction is important to model fluid-structure interaction phenomena in the upper airways such as phonation and obstructive sleep apnea. Flow assumptions underlying common flow descriptions along the upper airways are formulated. Flow separation positions obtained from theories with different degrees of complexity are qualitatively and quantitatively discussed. In particular, geometrical and flow features determining the influence of viscosity are varied. Increasing the constriction degree and the constriction length is shown to affect the position of flow separation. Boundary layer solutions and simulations with the two-dimensional Navier Stokes equations result in an accurate quantitative prediction of flow separation. Furthermore, Jeffery-Hamel flow solutions qualitatively predict the effect of both constriction height and length on the position of flow separation. The ad hoc assumption applied in quasi-one-dimensional flow descriptions does not accurately predict flow separation. Copyright © 2008 John Wiley & Sons, Ltd. 2009 Journal Article http://hdl.handle.net/20.500.11937/20708 10.1002/cnm.1195 John Wiley & Sons Ltd. restricted |
| spellingShingle | Van Hirtum, A. Cisonni, Julien Pelorson, X. On quasi-steady laminar flow separation in the upper airways |
| title | On quasi-steady laminar flow separation in the upper airways |
| title_full | On quasi-steady laminar flow separation in the upper airways |
| title_fullStr | On quasi-steady laminar flow separation in the upper airways |
| title_full_unstemmed | On quasi-steady laminar flow separation in the upper airways |
| title_short | On quasi-steady laminar flow separation in the upper airways |
| title_sort | on quasi-steady laminar flow separation in the upper airways |
| url | http://hdl.handle.net/20.500.11937/20708 |