Peristaltic transport in an elastic tube under the influence of dilating forcing amplitudes

• 作者: Amirlal Singh Sanjay Kumar Pandey
• 来源期刊: 生物数学学报:英文版
• 学科: 物理学
• 关键词: PERISTALSIS OESOPHAGUS elastic tube dilating forcing amplitude
• 年，卷（期）: 2020,（4）
• 页码范围: 167-179
• 页数: 13页
• 分类号: O35

摘要

We investigate flow through an elastic tube which is constrained to a prescribed external forcing consisting of a progressive travelling wave.Such a flow dynamics is closely related to that in the oesophageal tube.The mechanics of the tube is characterized by a relationship between transmural pressure difference and radial variation of the tube.Dimensionless radial variation,assumed to be small,is studied by perturbation techniques.Hesults demonstrate that the elasticity of the tube plays a significant role in the flow dynamics.An increment in the forcing amplitude of the inward radial force enhances pressure,time-averaged volume flow rate and hence axial and radial velocities.lt is revealed that the elastic nature of the oesophageal tube favors swallowing.