Quantitative Investigation on Human Cochlear Traveling-Wave Based on Fluid-Structure Coupling Analys

• 作 者: Ren Liujie Hua Cheng
• 机 构: DepartmentofMechanics&EngineeringScience,FudanUniversity,Shanghai200433
• 出 处: 第十三届现代数学和力学学术会议(MMM-XIII)暨钱伟长诞辰100周年纪念大会
• 发表日期: 2012年10期
• 关键词: cochlea traveling-wave finite-element method fluid structure interaction

Cochlear traveling-wave motion plays a very important role in the hearing system ofearly qualitative and initial quantitative investigation on cochlear traveling-wave motion, thetraveling-wave theory was widely accepted with further development and several considerableprogresses made over the past 50 years. However, quantitatively many important features such as thepropagation time of the cochlear traveling wave still remain unclear. Based on Fluid-StructureCoupling Analysis and developed cochlear model, this study quantitatively investigates the motionof human cochlear traveling-wave. By tracing the motion of the cochlear traveling-wave thepropagation times at different frequencies are calculated and also they are compared qualitativelywith known experimental results. This study shows that the propagation time tends to decrease asfrequency increases, which means it may cost more time for human to hear sound at low frequencies.