Dynamics of a multicomponent vesicle in shear flow
- April 17, 2017
- 1:15 p.m.
- LeConte 312
In this talk, we discuss dynamical patterns of a multicomponent vesicle with inhomogeneous bending, using a pseudo-spectral boundary integral method. Numerical results reveal that there exist novel phase treading and tumbling mechanisms. In particular, unlike the well-know steady tank-treading dynamics characterized by a fixed inclination angle, here the phase-treading mechanism leads to unsteady periodic dynamics with oscillatory inclination angle. When the average phase concentration of each phase is around 0.5, we observe that tumbling dynamics can be triggered even for very low shear rate, and the excess arclength/area required for tumbling is significantly smaller than the value for a homogeneous case. These findings highlight the level of complexity of vesicle dynamics in flow.