- Turkish Journal of Engineering and Environmental Sciences
- Vol: 32 Issue: 2
- Interaction of Couple Stresses and Slip Flow on Peristaltic Transport in Uniform and Nonuniform Chan...
Interaction of Couple Stresses and Slip Flow on Peristaltic Transport in Uniform and Nonuniform Channels
Authors : Ayman Mahmoud SOBH
Pages : 117-123
View : 6 | Download : 1
Publication Date : 9999-12-31
Article Type : Makaleler
Abstract :The effect of slip velocity on peristaltic flow of a couple stress fluid in uniform and nonuniform symmetric channels is studied. This problem has numerous applications. It serves as a model for the blood flow in living creatures. Using long wavelength approximation and neglecting inertial forces, a closed form solution for the axial velocity and the pressure gradient was obtained. Numerical computations were carried out to investigate the effect of couple stress parameter a and Knudsen number Kn on pressure rise, maximum pressure rise, and friction force for uniform and nonuniform channels. It is noted that the pressure rise decreases with increasing a and increasing Kn. The friction force has an opposite behavior compared with pressure rise.Keywords : Peristalsis, Couple stresses, Slip flow