摘要
针对人体肠道粘液为非牛顿流体的特点,推导了非牛顿流体的变形雷诺方程,建立了肠道机器人在人体肠道中运动的数学模型。采用有限差分法分析了肠道机器人螺旋槽参数对机器人动压粘液膜承载量、轴向摩擦牵引力和周向摩擦阻力的影响,从而获得了一组相对最优的机器人螺旋槽参数,使得肠道机器人可获得较大的动压粘液膜承载量和轴向摩擦牵引力,同时减小了其周向摩擦阻力。
A modified Reynolds equation was derived from the property of human body lumen that is non-Newton fluid. A motion model was built for the spiral-grooved intestine micro-robot working inside the lumen of human body. Based on the finite difference method, the relationship between the spiral-grooved parameters and kinetic properties such as the load capacity of hydrodynamic pressure, the axial thrust force and the circumferential resisting force was analyzed theoretically. Consequently, the optimal parameters of the spiral grooved intestine micro-robot were obtained, which can increase the load capacity of hydrodynamic pressure and axial thrust force of intestine micro-robot, and decrease the circumferential resisting force.
出处
《润滑与密封》
CAS
CSCD
北大核心
2007年第9期107-111,共5页
Lubrication Engineering
关键词
肠道机器人
非牛顿流体
动压粘液膜承载量
轴向摩擦牵引力
intestine micro-robot
non-Newton fluid
load capacity of hydrodynamic pressure
axial thrust force
