Secondary velocity and mixing characteristics of pulsatile flow in small-amplitude sinusoidal vessels

作者：Minh Tuan Nguyen; Lee Sang Wook^*

来源：Journal of Mechanical Science and Technology, 2016, 30(3): 1217-1224.

DOI：10.1007/s12206-016-0225-3

• Small-amplitude sinusoidal vessel
• Secondary velocity
• Mixing
• Pulsatile flow
• Computational fluid dynamics

Numerical simulations on pulsatile flow within sinusoidally wavy shaped vessels were conducted for mean Reynolds number of 350, which is in the range of physiological flow rates. We considered the constant pitch of six tube diameters 6D and relatively small amplitudes from A = 0.1D to 0.5D for sinusoidal vessel geometry and investigated the secondary velocity profiles and particle mixing characteristics. The results showed that relatively small amplitude of wavy vessel geometry has significant influence on the nature of flow patterns and particle mixing characteristics. This implies that characterizing accurate geometry is essential for accurate prediction of in vivo hemodynamics and may motivate further study on any possibility of reflection of secondary flow on vascular remodeling and pathophysiology.

• 出版日期2016-3