TY - JOUR N2 - For a deeper understanding of the inner ear dynamics, a Finite-Element model of the human cochlea is developed. To describe the unsteady, viscous creeping flow of the liquid, a pressure-displacement-based Finite-Element formulation is used. This allows one to efficiently compute the basilar membrane vibrations resulting from the fluid-structure interaction leading to hearing nerve stimulation. The results show the formation of a travelingwave on the basilar membrane propagating with decreasing velocity towards the peaking at a frequency dependent position. This tonotopic behavior allows the brain to distinguish between sounds of different frequencies. Additionally, not only the middle ear, but also the transfer behavior of the cochlea contributes to the frequency dependence of the auditory threshold. Furthermore, the fluid velocity and pressure fields show the effect of viscous damping forces and allow us to deeper understand the formation of the pressure difference, responsible to excite the basilar membrane. L1 - http://journals.pan.pl/Content/115033/PDF/AME_2020_131701.pdf L2 - http://journals.pan.pl/Content/115033 PY - 2020 IS - No 4 EP - 414 DO - 10.24425/ame.2020.131701 KW - human cochlea KW - basilar membrane KW - unsteady viscous fluid flow KW - fluid-structure interaction KW - pressure-displacement-based fluid element KW - viscous boundary layer KW - layer tonotopy KW - auditory threshold A1 - Wahl, Philipp A1 - Ziegler, Pascal A1 - Eberhard, Peter PB - Polish Academy of Sciences, Committee on Machine Building VL - vol. 67 DA - 25.11.2020 T1 - Numerical investigation of the basilar membrane vibration induced by the unsteady fluid flow in the human inner ear SP - 381 UR - http://journals.pan.pl/dlibra/publication/edition/115033 T2 - Archive of Mechanical Engineering ER -