Recent Research

Flow-induced “waltzing” red blood cells: microstructural reorganization and the corresponding rheological response

Post Date:2022-10-11

Chih-Tang Liao, An-Jun Liu, Yeng-Long Chen*

With multi-scale computational modeling tools that accurately captures red blood cell mechanical elasticity and the surrounding fluid hydrodynamic field, we discovered flow-driven synchronized rotation, or “waltzing”, of pairs of red blood cells.
The waltzing dynamic state is part of multi-layered hydrodynamics-induced phenomenon in dilute suspensions. Under fluid flow, the inter-cellular hydrodynamic field causes red blood cells to migrate to the center of the streamline and arrange in well-spaced crystalline positions.

The beautiful phenomenon also affects the suspension dynamics – the intrinsic viscosity either increases or decreases with increasing volume fraction depending on whether the waltzing dynamic state occurred.





(2022), Flow-induced “waltzing” red blood cells: microstructural reorganization and the corresponding rheological response, Science Advances, accepted

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