The stability of flowing trains of confined red blood cells (INVITED)

Abstract eng:
The asymptotic and transient stability of single-file trains of fluid-filled elastic capsules flowing in narrow channels is analyzed as a model for the lines of red blood cells commonly observed in small tubes or vessels. The most amplified disturbances in larger channels are found to have a rich variety of characteristics depending upon the details of the particular configuration. Transient growth mechanisms are found to be significant, even for relatively small perturbations, and are shown to precipitate nonlinear saturation and chaotic flow many times more quickly than the t → ∞ asymptotic stability would predict even for nominally small perturbations.

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