Wall Shear Stress and Pressure Fluctuations under Oscillating Stimulation in Helical Square Ducts with Cochlea-like Geometrical Curvature and Torsion

Noelle C. Harte, Dominik Obrist, Marco D. Caversaccio, Guillaume P.R. Lajoinie, Wilhelm Wimmer

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

Our study aims to provide basic insights on the impact of the spiral shape of the cochlea, i.e., of geometric torsion and curvature, on wall pressure and wall shear stress. We employed computational fluid dynamics in square duct models with curvature and torsion similar to those found in human cochleae. The results include wall pressures and wall shear stresses within the ducts under oscillating axial flow. Our findings indicate that the helical shape generates higher transverse wall shear stresses compared to exclusively curved or twisted ducts. The wall pressures and transverse wall shear stresses we found rise to amounts that may be physiologically relevant in the cochlea.Clinical relevance- The role of the spiral shape of the cochlea in hearing physiology remains, for a large part, elusive. For a better apprehension of hearing and its disorders, it is important to investigate the influence of geometric properties on biofluids motion and emerging phenomena in the cochlea.

Original languageEnglish
Title of host publication2023 45th Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC)
PublisherIEEE
Pages1-7
Number of pages7
ISBN (Electronic)979-8-3503-2447-1
ISBN (Print)979-8-3503-2448-8
DOIs
Publication statusPublished - 11 Dec 2023
Event45th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2023 - Sydney, Australia
Duration: 24 Jul 202327 Jul 2023
Conference number: 45

Conference

Conference45th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2023
Abbreviated titleEMBC 2023
Country/TerritoryAustralia
CitySydney
Period24/07/2327/07/23

Keywords

  • 2024 OA procedure

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